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IRISSAK [1]
3 years ago
8

The amount of matter in a given space or volume

Chemistry
2 answers:
viva [34]3 years ago
8 0
This would be density.
ivolga24 [154]3 years ago
5 0

Answer:

i'm not sure but i think

Explanation:

matter Anything that has mass and occupies space.

density The amount of matter in a given volume of space.

formula for density mass divided by volume

physical property A property of matter that can be observed and measured, without changing its identity.

I hope it helps

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The air in a bicycle tire is bubbled through water and collected at 25 ∘C. If the total volume of gas collected is 5.30 L at a t
Klio2033 [76]

<u>Answer:</u> The number of moles of gas in bicycle tire is 0.210 moles

<u>Explanation:</u>

To calculate the moles of gas, we use the equation given by ideal gas which follows:

PV=nRT

where,

P = pressure of the gas = 737 torr

V = Volume of the gas = 5.30 L

T = Temperature of the gas = 25^oC=[25+273]K=298K

R = Gas constant = 62.364\text{ L. Torr }mol^{-1}K^{-1}

n = number of moles of gas = ?

Putting values in above equation, we get:

737Torr\times 5.30L=n\times 62.364\text{ L Torr }mol^{-1}K^{-1}\times 298K\\\\n=\frac{737\times 5.30}{62.364\times 298}=0.210mol

Hence, the number of moles of gas in bicycle tire is 0.210 moles

6 0
3 years ago
B. Why is this number called a "mass” number?
deff fn [24]

<u>Answer:</u>

The mass of the atom depends on the sub atomic particles present in the nucleus of an atom.

That is, the protons and the neutrons.

Electrons are present around the nucleus and the mass is negligible since its mass is very very less.

<em>mass of a proton = 1.673\times10^{-27} kg</em>

<em>mass of a neutron = 1.675 \times 10^{-27} kg</em>

<em>mass of an electron = 9.109 \times 10^{-31} kg</em>

Mass number represents the mass of one particular isotope and it is a whole number for example, _6 C^{13}

Mass number is 13 and atomic number is 6 for the carbon isotope C-13.  

Atomic mass is different from mass number and it is a fraction since it is the average atomic mass of all the isotopes of an atom.

Atomic mass of C is 12.011 amu which we see in the periodic table is the average atomic mass of isotopes C-12, C-13 and C-14.

7 0
3 years ago
How many grams of water can be produced when 65.5 grams of sodium hydroxide reacts with excess sulfuric acid? (4 points) You mus
stiks02 [169]
Balanced Equation: H2SO4 + 2NaOH --> 2H2O + Na2SO4

Moles= Mass/RMM
= 65.5/40
= 1.6375

Mole Ratio = 2:2
= 1.6375

Mass (H2O) = 1.64 x 18
= 29.5 g
5 0
3 years ago
Which of the following pairs of formulas have the same empirical and molecular formulas?
mrs_skeptik [129]

Answer: option D. CO2 and SO2

Explanation:

7 0
3 years ago
Describe a method to investigate how the temperature changes when different masses of ammonium
rewona [7]

Answer:

Decrease temperature with increase in ammonium nitrate concentration.

Explanation:

The temperature changes when different masses of ammonium nitrate are dissolved in water because the ammonium nitrate takes energy from the surrounding water environment for the breaking of ionic bonds as a result the temperature of water decreases. When more concentration of ammonium nitrate is added to water, more decrease occur in temperature of water and the water becomes cold.

4 0
2 years ago
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