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kiruha [24]
2 years ago
12

The total mass of a chemical reaction always _____.

Chemistry
2 answers:
makkiz [27]2 years ago
5 0

Answer:

remains constant.

Explanation:

never [62]2 years ago
3 0
Remains constant is the answer
You might be interested in
How many moles are in 8.25×10²⁵ molecules of water(H20)?​
enyata [817]

Answer:

82500000000000000000000000

Explanation:

This is the only answer I can come up with.

6 0
2 years ago
What mass of carbon dioxide gas occupies a volume of 81.3L at 204 kPa and a temperature of 95.0°C?
alexandr1967 [171]

Answer:

236.9g

Explanation:

Given parameters:

Volume of gas  = 81.3L

Pressure of gas = 204kPa

temperature of gas = 95°C

Unknown:

Mass of carbondioxide gas = ?

Solution:

To solve this problem, the ideal gas law will be well suited. The ideal gas law is a fusion of Boyle's law, Charles's law and Avogadro's law.

Mathematically, it is expressed as;

                    PV = nRT

the unknown here is n which is the number of moles;

P is the pressure, V is the volume, R is the gas constant and T is the temperature.

convert pressure into atm

               101.325KPa  = 1atm

             204 kPa = \frac{204}{101.325}   = 2atm

Convert temperature to Kelvin;   95 + 273  = 368K

       2 x 81.3 = n x 0.082 x 368

             n = \frac{2 x 81.3}{0.082 x 368}   = 5.38moles

Since the unknown is mass;

 Mass  = number of moles x molar mass

      Molar mass of carbon dioxide  = 12 + 2(16)  = 44g/mol

 Mass  = 5.38 x 44  = 236.9g

5 0
3 years ago
This is science help me pls
jek_recluse [69]
Remember velocity = distance/time so that mean you would do 60/3 which equals 20 so the speed(velocity) equals 20
6 0
1 year ago
An atom has 13 protons and 14 neutrons. What is its mass number?
Hitman42 [59]
Protons have a mass of 1
Neutrons have a mass of 1

So 13*1 + 14*1 = Mass number 27
3 0
3 years ago
Read 2 more answers
Question 1 (1 point)
Marizza181 [45]
Both ehhevshahahbsbdvhshs
4 0
2 years ago
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