Answer:
mole = no of atoms/ 6.02E23.... so therefore answer= 5.6E22/6.02E23= 0.093✨
2.18 x 10^6 ng = 2.18 x 10^? mg
Answer:
2.18 * 10^12 mg
Explanation:
1 nanogram [ng] = 10^6 milligram [mg]
2.18 * 10^6 ng/ 1 ng = X mg / 10^6 mg
X mg = 2.18 * 10^12 mg
Answer:
2.18 * 10^12 mg
Explanation
Convert 0.0134 Liter to millimeter
Answer:
13400 millimeters.
Explanation:
Multiply the volume value by 1e+6
Is carbon a metal or a nonmetal? How many valence electrons does a carbon atom have?
Answer:
Carbon is a solid non-metal element. Carbon has eight valence electrons.
Explanation:
Hope this helps!!
Apps
What do you already know about mass, weight, and gravity?
Answer:
they are the three states of matter
Help please I’ll make you as brainlister 3
Answer:
It doesn't look like any of them but the best answer is SI
Explanation:
Jose adds five grams of a chemical to one liter of liquid and observes a reaction. If the reaction is endothermic, what will happen?
A
The liquid's mass increases; therefore, the volume of the liquid will increase
B
The liquids' mass decreases; therefore, the volume of the liquid will decrease.
С
Energy is released during the reaction; therefore, the temperature of the liquid will increase.
Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease.
D
Answer:
D. Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease
Explanation:
In a chemical reaction, the reaction is said to be ENDOTHERMIC if the reaction utilizes or uses energy instead of given it off. In this reaction, Jose adds five grams of a chemical to one liter of liquid and observes the reaction.
According to this question, the reaction is ENDOTHERMIC. This means that energy is absorbed or used up during the reaction; therefore, the temperature of the liquid will decrease i.e. the liquid used in the reaction will become COLDER.
2
A train travels 25 km in 0.5 hrs. How fast is the train going?
Answer:
15
Explanation:
Answer:
50 km/h
Explanation:
Since in half an hour it has gone 25km, double that (25 x 2) and you get your answer in km/h. Therefore, the train is going 50km/h.
In an isotope, what does the 'u' stand for?
For example: Lithium isotope: Li-6 6u
The u after 6
Where does the heat that is needed to warm the surface of the ocean come from? A. the Sun B. the Earth's interior C. animals D. the Earth's surface
Answer:
A. The Sun
Explanation:
Answer:
A
Explanation:
Most of our heat source on Earth comes from the Sun.
What do we call the (+) ion in an ionic bond? *
O Cation
O Anion
O Metalloid
O Covalent
Answer:
cation
Explanation:
a cation is an ion with a postitive charge. This (cat)ion (+) = cats are good , anion (onion) are not good (-)
Hydrochloric acid and sodium hydroxide can be combined to form sodium chloride and water. Which best explains the reaction?
Answer:
Explanation:
Hydrochloric acid and sodium hydroxide can be combined in equal ratios to form sodium chloride and water. Which best explains the reaction? The total volume produced by combining hydrochloric acid and sodium hydroxide will result in the same volume of sodium chloride and water.
If its density is 34 g/ml, what is the mass of 120.0 ml of the liquid?
Answer:
The answer is 4080 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 120 mL
density = 34 g/ml
We have
mass = 34 × 120
We have the final answer as
4080 gHope this helps you
Which formula is an ionic compound?
A.NaF
B.N2
C.NO2
D.CO2
FIRST ACCUAL ANSWER GETS BRAINLIST :)
Answer:
NaF
Explanation:
Answer: the answer is Naf
Explanation
and I love pop tart kitties OWO but i hope this helped i have a in science so i got 100% on it bye bye OWO
Can someone please help
Answer:
3
Explanation:
3 ampers (it says in the problem)
How can charged objects interact without touching
1s^ 2 2s^ 2 2p^ 6 3s^ 2 3p^ 6 4s^ 2 3d^ 10 4p^ 2 what element is this
Answer:
please use shell notation
What mass of ethanol will All
a 250.0 ml container if its
density is 0.789 g/ml?
Answer:
The answer is 197.25 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 250 mL
density = 0.789 g/ml
So we have
mass = 250 × 0.789
We have the final answer as
197.25 gHope this helps you
Which element would be the least similar to magnesium (Mg)?
A. Sr
B. Na
C. Be
D. Ca
Answer:
B: NA
Explanation:
this is the apex answer
Hi I really need help
Answer:
A
Explanation:
what is the density of an object with a mass of 100 grams and a volume of 50 cm
Answer:
2
Explanation:
because 100÷50=2m÷v=d
Which of the following has the smallest radius?
A. Br-
B. Br
C. I-
D. I
B) Br
..................
Convert the following to Celsius
16) 100°K
17) 200°K
18) 273°K
19) 350°K
Answer:
16) -173.15cel
17)-73.15cel
18)-0.15
19)76.85
Explanation:
I converted kelvins to cel
Brainly pls
PLEASE HELP 30 POINTS
Because the rock is irregularly shaped, you used the displacement method to measure its volume.
You used (______) to indirectly find the (_____) of the objects.
Options for the 1st fill in the blank:
- a balance
- calculations
- a graduated cylinder
Options for the 2nd fill in the blank:
- density
- mass
- area
Answer:
Because the rock is irregularly shaped, you used the displacement method to measure its volume. You used calculations to indirectly find the density of the objects.
PLZ Brainliest
Because the rock is irregularly shaped, you used the displacement method to measure its volume. You used calculations to indirectly find the density of the objects. Thus, option 1. b and 2. a is correct.
What is density?"Density has been defined as the ratio of the mass of the object to the volume of the substance." The mass of the object must be in grams and the volume is in the liter, milliliter, or cubic centimeter.
The density of the irregular-shaped rock can be calculated by the displacement method so that the volume of the rock can be estimated. The displacement method is used to calculate the volume of irregularly shaped objects. The formula is given as,
m = ρV
Here, m is mass, ρ is density and V is volume.
Therefore, the indirect calculation can be used to estimate the density.
Learn more about density, here:
https://brainly.com/question/6107689
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write the molecular fotmula of water
Answer:
H20
Explanation:
Answer:
hope it helped you
Explanation:
H2O (u have to write ✍️no 2 below H.
What determines the carrying capacity of an environment
Carrying capacity, or the maximum number of individuals that an environment can sustain over time without destroying or degrading the environment, is determined by a few key factors: food availability, water, and space
helpppppppppp please
what did max planck discovery?
Answer:
Max Planck discovered the quantum of action
Explanation:
Which element has four times as many protons in its nucleus than are found in Neon?
Answer:
Zirconium, Zr, 40
Explanation:
Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.
Compare and contrast Transverse Waves and Longitudinal Wave
there, so you can have choices, though they all mean the same thing.
Infer Why is a mechanism needed to remove carbon
dioxide gas from your cells?
Answer:
Because too much Carbon Dioxide can kill us.
Explanation:
Which statement best describes the difference between veins and arteries? *
veins carry oxygen rich blood back to the heart while arteries carry oxygen poor blood
away from the heart
veins carry oxygen poor blood back to the heart while arteries carry oxygen rich blood
away from the heart.
brings oxygen into the lungs and releases carbon dioxide and water (waste materials)
from the body
arteries carry blood that is carbon dioxide rich to the heart,
Answer:
Veins carry oxygen poor blood back to the heart while arteries carry oxygen rich blood