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Illusion [34]
2 years ago
6

What happens to concrete when it's no longer needed

Chemistry
1 answer:
Sveta_85 [38]2 years ago
8 0
Did you mean when it is a liquid?
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20.0 g of Nitrogen is produced when oxygen gas reacts with NO gas. 29.8 L of oxygen is required at STP to produce this 20.0 g of
fiasKO [112]

The statement is false as 85675 grams of nitrogen dioxide is produced instead of 20 grams.

Explanation:

Balance equation for the reaction:

2NO + O_{2} ⇒ 2NO_{2}

Data given:

mass of nitrogen produced = 20 gram

mass of oxygen = 29.8 litres or 29800 grams

0xygen is the limiting reagent so,

number of moles of oxygen: (atomic mass of 1 mole 32 grams/mole

number of moles = \frac{mass}{atomic mass of 1  mole}

putting the values in the equation:

 =  \frac{29800}{32}

  = 931.5 moles

1 mole of oxygen reacts to give 2 moles of NO2

931.5 moles of oxygen will give x moles

\frac{2}{1}=\frac{x}{931.5}

1862.5 moles of NO2 produced

in grams

mass = number of moles x atomic mass

mass = 1862.5 x 46.00

          = 85675 grams

The statement is false as 85675 grams of nitrogen dioxide is produced instead of 20 grams as said in question.

7 0
3 years ago
Please help me please help me ​
Dmitriy789 [7]
Plants produce starch by first converting Bluetooth photos date to a DP glucose using the ends of mine called glucose photos to be another transfer is this that requires energy in the form of ATP


B
7 0
3 years ago
What is the vapor pressure of a solution that contains 70.0 mL of ether and 30.0 mL of benzene?
Lera25 [3.4K]

Answer:

it is 50

if I m right pls mark me brainliest

6 0
2 years ago
The difference between air temperatures over water and over
lakkis [162]
The answer is A
Trust. Me
5 0
3 years ago
00000044m<br> 300000km/s <br> Both in scientific notation
cupoosta [38]

Answer:

4.4 × 10^-7

3 × 10^5

Explanation:

scmack me wit dat brainliest

5 0
2 years ago
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