amberreid028

07.05.2021 • 

Chemistry

Please Help :,D 43.5-g of cesium explosively reacts with water to form hydrogen gas and cesium hydroxide. How many moles of hydrogen gas were formed?
2Cs(s) + 2H2O(l) --> 2CsOH(s) + 1H2(g)

Calculate the mass of silver needed to react with chlorine to produce 42 g of silver chloride.
2Ag(s) + Cl2(g) --> 2AgCl(s)

Silver Nitrate reacts with sodium chloride to make the silver chloride and sodium nitrate. When 12.65 grams of silver nitrate is reacted. How many grams of silver chloride are formed?
AgNO3(s) + NaCl --> AgCl(s) + NaNO3(aq)

Calcium Carbonate decomposes into calcium oxide and a common gas, carbon dioxide. When 91.0 grams of calcium oxide is formed how many liters of carbon dioxide gas is also formed from this reaction. First find the number of moles of carbon dioxide gas actually formed in the reaction, then use the following conversion factor: 1 mol CO2(g) = 22.4 Liters of CO2(g)
CaCO3(s) + HEAT --> CaO(s) + CO2(g)

Ответ:

freebyyy7032

28.07.2021

Chemistry

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A) The two factors of the expression are those expressions that are on either side of the (implied) multiplication symbol. They are ...
• 4
• (8 +3x)

B) The first factor (4) consists of one (1) term, "4".
 The second factor (8 +3x) consists of two (2) terms, "8" and "3x".

C) The coefficient of x in the second factor is 3.
 The coefficient of x in the overall expression is 4*3 = 12.

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