plzzzzzzz HELP in TIMED
The atomic number of iron is 26 and the atomic mass of its most common isotope is 56. How many electrons are in an atom of iron?

26

82

56

30

Answers

Answer 1

Answer:

26

because it just is

Answer 2
26

the same number as the atomic number

Related Questions

help plz?
explain what is sorted sediment. why does it occur?

Answers

Answer:

Particles become sorted on the basis of density, because of the energy of the transporting medium. High energy currents can carry larger fragments. As the energy decreases, heavier particles are deposited and lighter fragments continue to be transported. This results in sorting due to density.

Explanation:

Particles are sorted based on density’s

help in timed
Scientists improved Mendeleev’s early periodic table by _____.


using numbers of neutrons and protons to organize the elements by their properties

using atomic number instead of atomic mass to organize the elements

including physical properties of elements such as melting point and density

including chemical properties of elements such as the ability to burn or to tarnish

Answers

They used atomic # instead of its mass
They used atomic number instead Alf and omicron mass

HMH Daily Demo Lab: Water Magic
Electric Charge (guided inquiry)
Purpose: To show how matter becomes charged by induction
Materials: comb, sink with working faucet

Predict: Predict what you think will happen to the charges of the comb and water if the comb comes in contact with the water. Record your hypothesis before following the directions below to carry out the lab experiment. The charges would attract. How and why is what I don’t know.
Directions:
1. Turn on a faucet just enough to allow a thin stream of water to flow.
2. Have a student volunteer-run a comb through his/ her hair a few times.
3. Observe. Tell the student to hold the comb near, but not touching, the stream of water.
4. Answer all questions below in complete sentences, using the R.A.C.E. strategy.
Ask and record your findings: What do you observe? Describe. I observed the stream of water bend toward the comb. I gave the comb electric charge by passing a comb through my sister’s hair and that allowed the comb to bend the stream of water.


Ask and record your findings: What does this indicate (show)? Explain. I


Observe:
1. To test students’ predictions, have the student volunteer pass the comb through the water.
2. Then have them move the comb so that it is near but not touching the water.
Ask and record your findings: What do you observe? Describe. WILL GIVE BRAINLIEST

Answers

3 I’m pretty sure this is right

What is the basic level of an ecosystem?
ecosystem
individual organisms
population
community

Answers

I think it might be population.

Answer:

(B) individual organisms

Brainliest

Having to do with turning a fraction over defines the word _____.

-Inertia
-Inversely
-Force
-Proportional

Answers

Answer:

inertia

Explanation:

Answer:

Inversely

Explanation:

(PLEASE answer with the right answers and don't just try and get the points) Answer each one to get 50 points. this is a risk but I really need this question. oh right and thank you to whoever answers! ^>^

Answers

solid to a liquid: ice to water

Which of the following elements have similar chemical properties to SULFUR?
A. Phosphorus and Arsenic
B. Oxygen and Selenium
C. Phosphorus and Chlorine
D. Nitrogen and Chlorine

Answers

Answer:

B:Oxygen and Selenium

Explanation:

They both have six valence electrons.

The answer here is B :)

The speedometer in a car does not measure the car’s velocity because velocity is

Answers

Answer:

Speed in a specific direction

Explanation:

Answer:

It does not indicate the car's direction.

Explanation:

Since velocity is both magnitude and direction, the speedometer measures speed but does NOT measure velocity

Examples and connections to the word: Digital. Will give brainliest. 3 for each!

Answers

Answer: I think this is what your working for.

Examples of digital media include software, digital images, digital video, video games, web pages and websites, social media, digital data and databases, digital audio such as MP3, electronic documents and electronic books.

Yes the best placement of a character analysis for the fractions is the

this is the question and i dont know which reasoning i should use for the claim "If you follow the instructions, the POW kits will always heat the water above the correct temperature for pasteurization (65°C), but some people didn’t follow the instructions."

Answers

Answer:

I think this evidence supports this claim because Evidence Card b says “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”

Explanation:

The correct reasoning for the given claim is shown by evidence 2.

What is water pasteurization?

Pasteurization is a method of disinfecting water without boiling it using heat or radiation.

Evidence 2 is the correct reasoning to explain the fact that if we follow the instructions the kit will always heat the water above the correct temperature for pasteurization (65°C). Second evidence is that “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”

Hence evidence 2 is the correct reasoning.

To know more about water pasteurization, visit the below link:

https://brainly.com/question/2426639

#SPJ2

HMH Daily Demo Lab: Water Magic

Electric Charge (guided inquiry)
Purpose: To show how matter becomes charged by induction
Materials: comb, sink with working faucet

Predict: Predict what you think will happen to the charges of the comb and water if the comb comes in contact with the water. Record your hypothesis before following the directions below to carry out the lab experiment. The charges would attract. How and why is what I don’t know.
Directions:
1. Turn on a faucet just enough to allow a thin stream of water to flow.
2. Have a student volunteer-run a comb through his/ her hair a few times.
3. Observe. Tell the student to hold the comb near, but not touching, the stream of water.
4. Answer all questions below in complete sentences, using the R.A.C.E. strategy.
Ask and record your findings: What do you observe? Describe. I observed the stream of water bend toward the comb. I gave the comb electric charge by passing a comb through my sister’s hair and that allowed the comb to bend the stream of water.


Ask and record your findings: What does this indicate (show)? Explain. I


Observe:
1. To test students’ predictions, have the student volunteer pass the comb through the water.
2. Then have them move the comb so that it is near but not touching the water.
Ask and record your findings: What do you observe? Describe. WILL GIVE BRAINLIEST

Answers

Answer:

3

Explanation:

answer: pretty sure it’s 3


Explanation:

Suppose a snack bar is burned in a calorimeter and heats 2,000 g water by 20 °C. How much heat energy was released? (Hint: Use the specific heat equation.) Give your answer in both joules and calorie

Answers

Answer:

Explanation:

Remember that the key is the water so

using the formula q=m*s*deltT

We have the mass 2000g

we have the specific heat of water which is 1.00 cal/ g C

and the final temperature 20 C

Remember that delt T is the change in temperature meaning (Tfinal - Tinitial) Assuming that the water is at room  temperature (25 C)  before starting the reaction then

q= (2000 g)(1.00 cal/g C)(20-25)

q= -10, 000 cal  

if you want you can convert to joules by multiplying by 4.314 J

In more simpler terms - If all the heat released was absorbed by the water, and it takes 1 calorie of heat to raise

the temperature of 1 gram of water by 1°C that is a total of 20 times 2000 or 40,000 cal.

or 40 kilocalories. If you want it in joules, there are 4.184 joules to one calorie so it is

4.184 times 40 or 167.36 kilojoules.

Hope that helped

A snack that, when burned, heats 2,000 g of water by 20 °C, releases 4.0 × 10⁴ cal (1.7 × 10⁵ J).

A snack bar is burned in a calorimeter and heats 2,000 g  (m) of water by 20 °C (ΔT).

We can calculate the heat absorbed by the water (Qw) using the following expression.

[tex]Qw = c \times m \times \Delta T = \frac{1cal}{g.\° C } \times 2,000 g \times 20 \° C = 4.0 \times 10^{4} cal[/tex]

where,

c: specific heat capacity of water

According to the law of conservation of energy, the sum of the heat absorbed by the water (Qw) and the heat released by the combustion (Qc) is zero.

[tex]Qw + Qc = 0\\\\Qc = -Qw = -4.0 \times 10^{4} cal[/tex]

Finally, we can convert -4.0 × 10⁴ cal to J using the conversion factor 1 cal = 4.18 J.

[tex]-4.0 \times 10^{4} cal \times \frac{4.18 J}{1cal} = 1.7 \times 10^{5} J[/tex]

A snack that, when burned, heats 2,000 g of water by 20 °C, releases 4.0 × 10⁴ cal (1.7 × 10⁵ J).

Learn more: https://brainly.com/question/10987564

Latitude determines how much intense sun an area gets, but what other factors can impact regional climate?


A. The weather forecast



B. Population



C. Ocean currents, mountains, and altitude



D. The type of animals that live there

Answers

Answer:

B I think sorry if I get this wrong

The answer is c or at least that makes the most since given the question

yoo i need help please my parents are very mad:(

Answers

Answer: I got you! Here are my answers !

Explanation:

1) 14/2=7m/s^2

2)30-0/12=2.5m/s^2

3)37-22/2=7.5m/s^2

4)12-0/8=1.5 km/2^2

5)8-0/3=2.7m/s^2 (cyclist) (Car) 30-0/8=3.75m/s^2

6)70-0/1.94x10^-3=36000km/h^2

7)10-2/4=2m/s^2

Make this brainliest! Thank you!

im sorry im not sure !!

2 questions
Popeyes or KFC
Mcdonalds, Wendys, Burger King, Shake Shack, or Chick Fil A

Answers

Answer:

Chick-fli-a

Explanation:

Answer:

Chick-Fil-A

Explanation:

Homeostasis means maintaining

Your answer:

varied internal conditions.


varied offspring.


similar offspring.


stable internal conditions.
plz help this for sience

Answers

stable internal conditions

Compare and contrast the conditions required for snow and rain to form.

Answers

Answer:

Snow forms when the atmospheric temperature is at or below freezing, and there is a minimum amount of moisture in the air. Within a cloud, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to Earth as rain

Explanation:

When water vapor cools and condenses forms clouds, that is, return to water or rain.

When the temperature in the atmosphere is at or below freezing 0 degrees Celsius and there is a minimal amount of moisture in the air, snow forms.

How does rain form?

Clouds are formed by evaporating water or ice from the Earth's surface, or by plants releasing water and oxygen as a result of photosynthesis.

Water evaporates, or rises from the Earth's surface into the atmosphere, creating a gas called water vapor.

When water vapor cools and condenses—that is, returns to liquid water or ice—it forms clouds.

How does snow form?

A significant snowstorm or blizzard requires three factors:

Cold air (below freezing).Clouds and precipitation require moisture to form.Clouds and snow form when moist air rises over very cold air.

Thus, these are the conditions for snow and rain.

Learn more about snow, here:

https://brainly.com/question/15697193

For the following question, select the correct chemical formula for the elements if they were to bong together.

Iodine and Bromine




ionic

metallic

covalent

noble

Answers

Answer:

Ionic

Explanation:

Lithium is an alkali metal and form an ionic bond by donating an electron.

Fluorine is a halogen and forms ionic bonds by accepting an electron.

The electronegativity difference between lithium (0.98) and fluorine (3.98) is 3 Pauling units. Usually, when elements have a difference of 1.7 (or 2.0) Pauling units the bond is classified as ionic.

Hope this helps! If you have any more questions or need more explanation please leave a comment down below and I will reply ASAP. Good luck!

Answer: ionic is the answer

Which form of energy represents a moving fan blades?!?!?

Answers

Answer:

Mechanical I believe is the answer.

Explanation:

It is lights because it use the most energy I think

Which has a positive charge?

neutrons and the nucleus

protons and neutrons

neutrons and electrons

protons and the nucleus

Answers

protons and the nucleus

Because protons has positive charge. Neutrons have no charge. Nucleus contains protons and neutrons, so it adds up to result in a positive charge.

Protons and the nucleus

PLS ANSWER CORRECTLY 50 POINTS AND BRAINLIEST!!!
During an investigation, a scientist burned 48 g of magnesium strip. After the reaction, the total mass of the product formed was found to be 80 g. Does the law of conservation of mass hold true in this case? Use complete sentences to justify your answer based on numerical calculations.

Answers

Answer

yes

Explanation:

the law of conservation of mass hold true in this case burning magnesium strip is explained by this equation 2 Mg (s) + O2 (g) -> MgO (s)So the lighter magnesium, after reacting with oxygen in air, forms the heavier magnesium oxide. molar mass of magnesium and magnesium oxide are 24g and 40g respectively. So the same ratio 24:40 (i.e. 3:5) is maintained in the given masses of 48g and 80g, which means mass is conserved in the reacion.

The question is in the photo

Answers

Answer:

#3 i think (:

Explanation:

What do members of a particular species living in a specific area always form?
population
individual organisms
community
ecosystem

Answers

Members of a particular species living in a specific area is a population.

Answer:

Yeah, probably population.

Explanation:

Population as in the species' population.

Define the kinetic theory of matter (use these words “explains, energy, particles, increase, decrease.”

Answers

Answer:

The kinetic theory of matter explains that all matter is made of particles which are constantly moving/have energy. The energy varies depending on the temperature of the matter, therefore determining if the matter is solid, liquid, or gas. When the energy of a particle is increased or decreased, a phase change can occur.

What is a tornado and how does it form? ( Don't search the answer )

Answers

Answer: when hot air and cold air clash they spin creating a vaccum which causes a tornado

Explanation:

Answer:

A tornado is a wind tunel (that's probaly spelled wrong). It basically happens when wind is spinning in a circle, and it keeps picking up. This is a reason why tornados don't survive in hilly places.

Explanation:

I think...

1. Which statement is a correct interpretation of the data in the graph?

A. As water temperature increases, solubility decreases.

B. As water temperature increases, solubility increases.

C. As water temperature increases, solubility remains constant.

D. As water temperature increases, solubility decreases and then increases.

Answers

Hey how are you! Your answer would be
B . As water temperature increases,solubility increases.

Answer:

B

Explanation:

Aiden has $100 in a savings account that earns 10% annually.The interest is not compounded. How much will he have in 1 year?

Answers

Answer:

Explanation:

Sorry dunno

i think it might be this

10/100 x $100 = $10
12 x 10 = $ 120

Santiago is a chemist working to make a new kind of antacid, which is a medicine that helps with stomach pain. He mixed two powdery solid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances.After mixing, Santiago found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?

Answers

Answer:

C

Explanation:

Santiago mare two powdery solid substances. hope this helped

The diagram which shows the repeating groups of atoms that make up the ending substances is C.

What are repeating group?

Repeating group is defined as a group of fields or attributes that show up repeatedly in a database table. It is a widespread issue that affects both big and small businesses, and it can have a variety of effects. An attribute that appears more than once in each row of a table is known as a repeating group. A relational table cannot contain "repeating groups," as they are a feature of pre-relational systems.

On most metals, a reaction could be seen when acids were applied. A gas and heat were created when the metal vanished. The new chemicals' chemical characteristics are distinct from those of the original substances.

Thus, the diagram which shows the repeating groups of atoms that make up the ending substances is C.

To learn more about repeating group, refer to the link below:

https://brainly.com/question/13065925

#SPJ2

HELPPP PLEASEEEEEE DUE TODAY :(

Answers

JJJJJJJJJJJJJJJ:))))))))))))))

Which two of the following organisms are omnivores in this food web?
A) rotifer
B) black
C) golden algae
D) copepod

Answers

B would be the correct answer
The answer is b I know it is
Other Questions
1. Cul es el tema del articulo?A. cmo escuchar la radioB. cmo escribir un cuentoC. qu sonidos hacen las cosasD. cmo hacer efectos de sonido Which statement best describes the area of Triangle ABC shown below? A triangle ABC is shown on a grid. The vertex A is on ordered pair 4 and 6, vertex B is on ordered pair 6 and 1, and the vertex C is on ordered pair 2 and 1. It is twice the area of a rectangle of length 4 units and width 5 units. It is one-half the area of a rectangle of length 4 units and width 5 units. Correct Answer It is twice the area of a square of side length 5 units. It is one-half the area of a square of side length 5 units. 4 7/8 in decimal form Solve.log 3 + log x - log(x + 1) = log 2 Please please help Can someone give me a book name that I can search and will show me the rising action, climax, falling action, and resolution? Sonu's mother is 12 years more than twice Sonu's age. After 8 years,she will be 20 years less than three times Sonu's age. Find Sonu's age and mother's age. dentify as an increase or decrease. Then find the percent of increase or decrease. If necessary, round to the nearest percent.Original: 150New: 130 Franks Sports store has a 20% off sale on all of its merchandise. How much is the discount on a baseball glove that originally costs $25? how did people think Washington should be the country's first president A and B react according to the scheme 2A + B C. The reaction is highly exergonic, that is, it goes to completion when A and B are allowed to react. In order to achieve the exact stoichiometry, your intention is to mix in a kettle 2.000 tons of A and 1.000 ton of B. A balance, the maximum capacity of which is 0.500 tons with 1% precision was used to weigh A and B. Assume that the molar masses of all chemical species are equal. What is the maximum possible amount of unreacted reactants? Why are force fields necessary to describe electric force? 0 A. Electric force acts at a distance. O B. Electric force can only attract objects. C. Electric force is a form of gravity. D. Electric force attracts two poles. A cone with the same base but a height 3 times taller than the given cylinder exists. What is the volume of each figure? Express your answers in terms of pi.Volume of the cylinder = Volume of the cone = Pls i need help So far this month you have achieved $100.90 in sales which is 50% of your monthly goal l. With 5 more workdays this month, how much do you need to sell each day to reach your goal? help plzzzzzzzzzzzzzzzz the graph shows the voltage in a circuit changing as temperature increases from 100 to 600. which is the best estimate for the rate of change of the voltage over the interval?1.5 volts3 5 volts5.5 volts7.5 volts Help please ............ Please help me with this one What is the main type of rhetorical appeal Roosevelt uses in this section of his speech? How many grams of sodium chloride should you theoretically produce if you start with 5.00 grams of calcium chloride and excess sodium carbonate? (answer in numbers only - no units or words) scientists infer that oxygen first began to enter the Earth's atmosphere after the appearance of