1. How many moles of H,0 are required to react to form 2.5 grams of CH,? 2 C+2H20 → 1 CH, + 1 CO2
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2. If I start with 2.5 grams of NaCl, how many liters (L) of of H, form?
2NaCl + 2 H20→2 NaOH + 1 Cl2 + 1 H2
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3. In the following, how many grams of NH3 are needed to react with 4.5 grams of 0,?
4NH3 + 502 → 4NO + 6H,
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The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Which substance can be broken down by chemical means

Astudent states that 9.0 g of baking soda will form an unsaturated solution in 100 g of water. what do you need to know to decide whether this statement is correct? a. the temperature of the water and the molar mass of baking soda b. the percent by volume of the solution and the solubility of baking soda c. the temperature of the water and the solubility of baking soda at that temperature