Element that forms more than one type of an electrically charged particle which is known as an ion.
Answer:
A I believe this is the answer I do not know look at the picture I attached
We are given the number of moles of solid magnesium supplied for the reaction which is 0.02 moles while hydrochloric acid is supplied in excess thus we can say that the reaction proceeds to completion. Calculation is as follows:
0.020 mol Mg ( 1 mol H2 / 1 mol Mg ) = 0.020 mol H2 gas is produced
To convert the number of moles to volume, we use the conditions at STP of 1 mol of a substance is equal to 22.4 L. Thus,
0.020 mol H2 (22.4 L / 1 mol) (1000 mL / 1 L) = 448 mL
Equation for decomposition is as follow,
2 NH₄ClO₃ → 3 O₂ + 2 NH₄<span>Cl
According to eq.
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67.2 L (3 mole) off O₂ is produced by = 202.98 g (2 moles) NH₄ClO₃
So,
200 L of O₂ will be produced by = X g of NH₄ClO₃
Solving for X,
X = (202.98 g × 200 L) ÷ 67.2 L
X = 604.10 g of NH₄ClO₃
Not sure about any others but I believe 3 goes with B