Answer: im in 8th they got me doin this
Explanation: i need help quick
The partial pressure of argon in the atmosphere when the atmospheric pressure is 775. 0 torr is 7.75 torr.
Each gas that makes up a mixture of gases has a partial pressure, which represents the notional pressure of that gas if it were to occupy the entire volume of the initial mixture by itself at the same temperature.
The force that the weight of the atmosphere exerts on a certain area is known as atmospheric pressure.
As we know,
partial pressure is calculated as:
partial pressure = (total absolute pressure) × (volume fraction of gas component)
partial pressure = × 0.010
partial pressure = 775.0 × 0.010
partial pressure = 7.75 torr
Therefore, partial pressure of argon in the atmosphere when the atmospheric pressure is 775. 0 torr is 7.75 torr.
Learn more about partial pressure here;
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1.) is157.7 g
<span>moles Fe = 209.7 g/ 55.847 g/mol=3.75
the ratio between Fe and CO is 2 : 3
moles CO = 3.75 x 3 /2 =5.63
mass CO = 5.63 mol x 28.01 g/mol=157.7 g
2.) is </span><span>1.06 moles
</span>48.7/23 = 2.12 moles sodium
<span>2.12/2 x 24 = 25.44dm^3 hydrogen = 1.06 moles </span>
1.06 X 6.02x10^23 = 1.204x10^24 molecules of hydrogen.
3.) is 91.8
<span>8.3 moles H2S x (2 moles H2O / 2 moles H2S) = 8.3 moles H2O = theoretical amount produced. </span><span>8.3 moles H2O x (18.0 g H2O / 1 mole H2O) = 149 g H2O produced theoretically. </span><span>% yield = (actual amount produced / theoretical amount) x 100 = (137.1 g / 149 g) x 100 = 91.8 </span>
The answer is A , an enzyme.
An enzyme is defined as a molecule which is protein in nature, that helps other organic molecules enter into chemical reactions with one another but is itself not affected by these reactions. It remains the same as it was before and after the reaction. In other words it acts as a catalyst for organic biochemical reactions.
Enzymes are usually very selective in the molecules that they act upon, called substrates, often reacting only with a single substrate.
Enzymes can quicken reactions by a thousand fold but will only be able to work within a narrow range of temperature and pH, outside of which they can lose their structure and become denatured.