PLEASE ANSWER
A train travels at an average speed of 25 miles per hour. How long does it take the train to travel 2000 miles

Answers

Answer 1

Answer:

80 hours. 2,000 ÷ 25 = 80


Related Questions

during chemical reaction do atoms change into a new substance
true or false

Answers

Answer:

t

Explanation:

because for atoms to change they have to have some kind of chemical action to get new life

True


Because of chemical action
Hope it helped you

3.Zinc has an atomic number of 30 and a mass number of 65, how many neutrons does it have?
30
65
35
95

Answers

So your answer is 35 right okay so you subtract the mass number and the atomic number and that should always give you the neutrons

Answer:

35

Explanation:

Given parameters:

  Atomic number of zinc  = 30

  Mass number of zinc = 65

Unknown

  Number of neutrons  = ?

Solution:

The mass number of an atom is the sum of its protons and neutrons;

     Mass number  = Protons + neutrons

Atomic number is the number of protons in an atom;

   Atomic number  = Protons

So;

     Mass number  = Atomic number + Neutrons

Neutrons  = Mass number  - Atomic number

 Neutrons  = 65 - 30  = 35

The number of neutrons in the atom is 35

Which characteristic of a substance is considered a chemical property?

its boiling point
its reactivity
its density
its conductivity

Answers

Answer:

Reactivity

Explanation:

a chemical reacting to another chemical is considered a Chemical property because chemicals react with other chemicals differently. Pls PLs give me brainliest

Answer:

reactivity

Explanation:

This chart shows characteristics of three different types of atoms.

A 3-column table with one row titled valence electrons in three types of atoms. The first column labeled Atom X has entry 6 valence electrons. The second column labeled Atom Y has entry 2 valence electrons. The third column labeled Atom Z has entry 8 valence electrons.
Which statement is best supported by the information in the chart?

Atom X will donate electrons to Atom Y.
Atom X will accept electrons from Atom Y.
Atom Y will accept electrons from Atom Z.
Atom Z will donate electrons to Atom X.

Answers

Answer is Atom X will accept electrons from Atom Y.

Atom X will accept electrons from Atom Y.

What is Chart?

The official 511 traveller information service for Maryland is CHART Web. Maryland 511 gives drivers dependable, up-to-date information about traffic, road closures, and weather-related traffic events and conditions.

When driving in Maryland, MD 511 assists drivers in getting to their destination in the safest and most effective way possible.

The term "chart" (sometimes referred to as "graph") refers to a graphical representation of data visualization in which "the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart".

Therefore, Atom X will accept electrons from Atom Y.

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The volume of an unknown liquid is shown in the graduated cylinder. The mass of the liquid is 105 grams.

What is the density of the unknown liquid?

A 3500 g/mL
B .33 g/mL
C 3.0 g/mL
D 3.3 g/mL

Answers

The answer I got is C. 3.0 g/mL .

Answer:

the answer is c

Explanation:

TIME REMAINING
58:36
The electron configuration for Helium (He) is shown below.

1s2

Which diagram shows the correct distribution of electrons in the electron shells of a helium atom?

Answers

Answer:

'*:*'

Explanation:

I know this looks weird, but

'= electron

*:* equals the nucleus, so 2 protons and 2 neutrons

and then '=electron

sexual reproduction helps to increase
a. the number of offspring
b. genetic variation
c. genetic mutations​

Answers

The answer to the question is A

Answer:

a. the number of offspring would be ur answer pls make me brainliest

what are the 3 subatomic particles of the atom? What are their corresponding charges and locations within the atom?

Answers

Answer:

Protons, neutrons, and electrons are the three main subatomic particles found in an atom.

Explanation:

the negatively charged electrons can be found around the nucleus in an electron cloud.

What would be the pH after mixing!!

Answers

pH3-4. It says suggest so try getting a close and appropriate answer after adding an acid to an alkaline.

8. What is Planck's law?
O F = hm
O F = MA
O E = hf
O E = mc (squared)

Answers

Answer:

O E = hf

Explanation:

in a hydraulic lift system, the output force is greater than the input force because

Answers

Answer:

In a hydraulic lift system, the output force is greater than the input force because the pressure acting on the output piston is greater than the pressure acting on the input piston.

Explanation:

A hiker tries to prepare a hard-boiled egg on the high slopes of Mount Everest. The base camp is located 5,300 meters above sea level. The hiker observes that the water begins to boil at 82⁰C, much lower than the 100⁰C needed to cook the raw egg. He hopes that just leaving the egg in the boiling water longer will let the egg cook. Will he have hard-boiled eggs for breakfast?

Answers

Answer:

He will not have hard-boiled eggs for breakfast

Explanation:

The given parameters are;

The elevation at which the base camp of the hiker is located = 5,300 meters

The boiling point of water at the elevation of the base camp = 82°C

The temperature required to cook the raw egg = 100°C

Therefore, we have;

The temperature of the boiling water at the given elevation of the base camp 82°C < The temperature required to cook the raw egg 100°C

Therefore, the eggs will not be hard boiled.

The hiker won't have hard-boiled eggs for breakfast as a result of the

boiling point of water being less than 100⁰C.

The boiling point decreases with an increase in altitude. The hiker was at

5,300 meters above sea level which made the boiling point of water to be

decreased to 82⁰C.

Since the water isn't able to achieve the boiling point of 100⁰C, then the raw

egg won't be hard boiled for breakfast.

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A student found the mass of a brick: 50 grams. The volume was 10 cubic centimeters. If the student had 5 bricks, what would be the total density?

Answers

Answer:

The answer is 5 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

The mass of one brick is 50 g

the volume of one brick is 10 cm³

Since the student had 5 bricks

Total mass = 5 × 50 = 250 g

total volume = 5 × 10 = 50 cm³

So the total density is

[tex]density = \frac{250}{50} = \frac{25}{5} \\ [/tex]

We have the final answer as

5 g/cm³

Hope this helps you

A student has a sample of solid calcium. It is shiny and metallic looking. He squeezes a pipet of concentrated sulfuric acid onto the calcium. Bubbles are produced and the calcium appears to disappear. The test tube gets hot. What kind of change occurred?

Answers

Answer:

Physical change

Explanation:

There are two types of changes: physical change and chemical change. Physical change is defined as the change that changes the physical appearance of the substance and do not affcet the chemical composition of the substance whereas chemical change causes changes in the chemical composition of the susbstance.

The given example shows physical change because solid calcium undergoes sublimation. process in which a solid substance changes into gaseous phase directly without undergoing liquid phase.

Hence, the correct answer is "Physical change".

2. Which atom is larger, Na or Al? Explain why.

Answers

Answer:

Na

Explanation:

Because it has the highest protons and electrons(Atomic mass)

which process do ribosomes perform​

Answers

Synthesizes (makes) proteins to be used by the cell. Not membrane bound

Groups of specialized cells working together are called

Answers

Groups of specialized cells working together are called tissue

Select the correct answer from each drop-down menu.

Why do some transition metals have multiple oxidation states?

Transition metals have multiple oxidation states because of their (a. completely filled b. partially filled c. empty) (s, p, d, or f) sublevel.

Answers

Answer:

because of energy difference between (n1)d and ns orbitals (sub levels) and involvement of both orbital in bond formation

Explaination:

the reason is that there is a difference in energy of orbitals of an atom of transition metal, so there (n1)d orbitals and there ns orbitals both make a bond and for this purpose they lose an electron that is why both sublevels shows different oxidation state.  

Hope this helped you

Transition metals have multiple oxidation states because of their partially filled orbitals . Thus option b is correct.

What are transition metals?

Transition metals are defined as essentially, a configuration attended by reactants during complex formation, as well as the reaction coordinates.

It can also be defined as a very short-lived atomic configuration at a reaction-energy diagram's local energy maximum.

Transition metals are best defined as an element with a partially filled d sub-shell on its atom or that can give rise to cations with an incomplete d sub-shell.

Transition state is defined as a chemical reaction is defined as a certain configuration along the reaction coordinate.

Oxidation state is defined as the total number of electrons that have been deleted or added to an element.

It can also be defined as an atom's charge if all of its links to other atoms were entirely ionic.

Thus, transition metals have multiple oxidation states because of their partially filled orbitals . Thus option b is correct.

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A chemical equation is balanced if there are ______ ______ of each kind of ______________________ on both sides of the equation.

Answers

If each side of the equation has the same number of atoms of a given element, that element is balanced. If all elements are balanced, the equation is balanced. So your sentence should look like this:

A chemical equation is balanced if there are equal atoms of each kind of element on both sides of the equation.

It's how many atoms are in two water molecules (H2O)?

Answers

Answer:

The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O). Here comes the key part. From the Periodic Table of Elements, one sees that one mole of hydrogen atoms weighs 1 gram while one mole of oxygen atoms weighs 16 grams.

Explanation:

:)

The number of atoms present in two water molecules is 6 atoms. 4 hydrogen atoms and 2 oxygen atoms.

What are atoms?

Atoms are the basic unit of a substance. An atom is made of a nucleus, protons, neutrons and electrons. Different atoms combines to form a molecule and molecules combines to form compounds.

Water has the formulas H₂O, thus one molecule of water contains 2 hydrogen and one oxygen. Therefore, two molecules of water that is (H₂O)₂ have 4 hydrogen and 2 oxygens thus, a total of 6 atoms.

Hence, the number of atoms present in two molecules of water is 6.

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4. Which elements would have similar properties to potassium?
A. Lithium and Sodium
B. Bromine and Krypton
C. Calcium and Scandium
D. Cobalt and Rhodium

Answers

Answer:

The answer is A. Lithium and Sodium

Plz help!

Covalent bonding is referred to as “sharing” electrons. Is it really sharing? Why or why not?

Answers

Answer:

yes

Explanation:

because they will bond in order to gain more stability which is gained by forming a full electron shell

How many inches are in 4 yards? ( 1 yard = 3 ft and 1 ft = 12 inches)

Answers

Answer:

There are 144 inches in 4 yards.

Hope this helps :)

Explanation:

Answer: 144

Explanation:

Is 5O2 a Element or Compound?

Answers

5o2 is a Compound not an element

i must be present in a compound for it considered organic

Answers

Answer:

Carbon

Explanation:

Organic compounds must contain carbon. They also usually contain hydrogen,  oxygen, and often nitrogen and other compounds such as phosphorus.

Nearly all organic compounds contain carbon-hydrogen bonds.

Math and science skills




Please answer


1.
|Predict|
2.
|Use variables|
3.
|Plan and conduct investigations|
4.
Draw conclusions
5.
Hypothesize
6.
Measure
7.
Classify and order
8.
Record and display data
9.
|Use time and space relationships|
10.
Use numbers

Answers

Answer:6

Explanation:

Find the percent of oxygen in CaClO3)2 Show your work

Answers

So in calcium chlorate, there is one calcium, 2 chlorines, and 6 oxygens. To find the percent of oxygen in the compound, find the weight of the oxygen and divide it by the total weight of the compound:

weight of oxygen (95.94g/mol) / weight of entire compound (206.98g/mol)
= 0.4635

Finally, to convert this to a percentage you multiply it by 100

0.4635 x 100 = 46.35% Oxygen by mass

NEED HELP FAST!!!!
Points A and B are locations on the banks of a river. What are the dominant processes occurring at locations A and B? *


A. deposition at location A; erosion at location B

B. erosion at location A; deposition at location B

C. deposition at both locations A and B

D. Erosion at both locations A and B

Answers

Answer:

C

Explanation:

What happens to the tape at the closer markers compared to the markers that are further away?

Answers

The tape gets smaller when it is farther away

How many days does the waxing and waning phase of the moon last on average? *

Answers

Answer:

7.38 days.

Explanation:

Other Questions
A rectangular garden has length and width as given by the expressions below.Length: 4 - 7(3x + 4y)Width: 3x(-2y)Write a simplified expression for the perimeter of the rectangle. A clothing store uses a markup of 40% on all items they purchase to sell, find the markup is the original cost was 10.2Please help Im desperate indian constitution adopted many institutional details and procedures from different countries"justify by giving examples On the Italian Penninsula Rome is located on :1. North 2. West Central3. South4. North East describe why the federal government created reservations ( westward expansion ) Under corporate law, corporations are given the same rights asA. the Federal ReserveB. intellectual propertyC. individualsD. foreign countries What type of figurative language is, "Were your ears burning?"A. onomatopoeiaB. allusionC. idiomD. simileWhat is the figurative language in this sentence? "...so that's how this cookie is going to crumble."A. onomatopoeiaB. hyperboleC. idiomD. simileWhat is the figurative language in this sentence? "I had to fight like a tiger to wake up the next morning."A. metaphorB. hyperboleC. idiomD. simile Robert has set-up a start-up business. You have been appointed as an accountant for his business. Prepare journal entries for the followingtransactions1. On January 1, 2015, Robert invested $50,000 in his business.2. On January 4, 2015, Robert bought a laptop for $2,800 for business use.3. On January 20, 2015, Robert received $13,000 for services rendered.4. On January 23, 2015, Robert paid salaries to his staff for $3,500 I was doing some English work and came across a word I was unfamiliar with. The word is "parallelism". Can someone please explain to me what that means? It would be very much appreciated! Given integer values for red, green, and blue, subtract the gray from each value.Computers represent color by combining the sub-colors red, green, and blue (rgb). Each sub-color's value can range from 0 to 255. Thus(255, 0, 0) is bright red, (130, 0, 130) is a medium purple,(0,0,0) is black, (255, 255, 255) is white, and (40, 40, 40) is a dark gray. (130, 50,130) is a faded purple, due to the (50, 50, 50) gray part. (In other words, equal amounts of red, green, blue yield gray).Given values for red, green, and blue, remove the gray part. Which of the following would be a secondary outcome of working out every day for an hour? A. You would be more confident B.You would be angry more often C. You would lose weight D. Your physical health would improve . The six lowest temperatures for a certain date were listedin an almanac as -32, -14, -28, -19, -38, and -21. Which ofthese temperatures is the COLDEST? How did the people of Hawakuh react to Estevans arrival Li counts 203 stars in the sky. The next night, she counts 178 stars. How many stars in all did she see on the two nights? What's the difference between the first and first? If population were considered the ultimate indicator of success, which species would be the most successful?1.birds2.mammals3.termites4.dinosaurs whos better juice wrld or lil peep Can you guys please help me with this math problem 2. Which country were colonists only allowed to trade with?A. BritainB. FranceC. Germany The difference of three times a number and 4 is 8. What is the value of n?a. -1.3C. 4b. -4d. 1.3