Answer:
Chemical reactions that take place inside living things are called biochemical reactions. Explanation:The sum of all the biochemical reactions in an organism is referred to as metabolism. Metabolism includes both exothermic (heat-releasing) chemical reactions and endothermic (heat-absorbing) chemical reactions.
Pressure is affected by gravity,height, and density since pressure = density×height×gravity .
Answer:
81 L gas
General Formulas and Concepts:
<u>Ideal Gas Law</u>
- STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K
<u>Stoichiometry</u>
- Using Dimensional Analysis
Explanation:
<u>Step 1: Define</u>
[Given] 3.6 mols gas at STP
[Solve] volume (L) of gas
<u>Step 2: Convert</u>
- [DA] Set up:
- [DA] Multiply [Cancel out units]:
<u>Step 3: Check</u>
<em>Follow sig fig rules and round. We are given 2 sig figs.</em>
80.64 L gas ≈ 81 L gas
Answer:
1) Moles of CO 2 = Given mass / Molecular mass of CO 2 = 4.4 / 44 = 0.1 mole. 2) Molecules of CO2 in 0.1 moles of CO2 = 0.1 x 6.023 x 10 23 = 6.023 x 10 22 molecules 3) 44 gram (molecular wt of CO 2) contains 2 moles atom of oxygen therefore 4.4 gram of CO2 will contain = 2 /44 *4.4 = 0.2 moles atom of Oxygen.
Answer:
The limiting reactant is the K
Explanation:
This is the reaction:
2 K + F₂ → 2KF
2 moles of potassium react with 1 mol of fluorine
Let's determine the moles:
6.02x10²³ molecules are contained in 1 mol
10 molecules are contained in (10 . 1) / NA = 1.66x10⁻²³ moles
For 1 mol of flourine, we need 2 moles of K
If we have 1.66x10⁻²³ moles of Fl₂, we will need the double of K
For 2 moles of K, we need 1 mol of Fl₂
If we have 1.66x10⁻²³ moles of K, we will need the half of Fl₂
Then, the limiting reactant is the K
