A reaction is magnesium and hydrochloric acid producing hydrogen gas. What is the coefficient for HCI?

One reaction in the lab is magnesium and hydrochloric acid. It produces hydrogen gas. When you balance the equation, what is the coefficient for HCl?

What mass of hydrogen gas is produced if 17.54g NaOH is produced by the reaction?

The reaction of sodium and water produces sodium hydroxide (NaOH) and hydrogen gas.

How do I do this problem?
What is the chemical formula of the known substance? What is the chemical formula for the unknown sunbstance? And what is the mole ratio?
I really need help!
Thank you!

How many liters of hydrogen gas is formed from the complete reaction of 15.5 g C?

Consider the following chemical reaction:
C(s) + H2O(g) –> CO(g)+ H2(g)

How many liters of hydrogen gas is formed from the complete reaction of 15.5 g C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and a temperature of 360 K.
Express your answer using two significant figures.

How many liters of hydrogen gas is formed from the complete reaction of 14.5 ? Assume that the hydrogen gas i?

How many liters of hydrogen gas is formed from the complete reaction of 14.5 ? Assume that the hydrogen gas is collected at a pressure of 1.0 and a temperature of 360 .

How to many moles of hydrogen gas are produced in the reaction of 100. g calcium hydride with water?

The reaction of calcium hydride with water can be used to prepare hydrogen gas.

Please help me with my chemistry. Im having a hard time.

How Many Liters Of Hydrogen Gas Is Formed From The Complete Reaction Of 15.6 G C?

Assume the hydrogen gas collected at a pressure of 1.0 atm and a temp of 360 K.
C(s) + H20(g) = CO(g) + H2(g)

How Many Moles Of Hydrogen Gas Will Be Produced From A Reaction That Evolved 40 Grams Of The Gas? ?

How many moles of hydrogen gas will be produced from a reaction that evolved 40 grams of the gas? (Molecular mass of hydrogen gas, H2 = 2.0)

What Volume Hydrogen Gas Is Produced By This Reaction, Under These Conditions?

Suppose 1.00g Manganese (Mn) reacts with an excess of 6.00 M HCl, how many grams of H2 gas is produced? The density of hydrogen gas is 0.0988 g/L at 0 degrees C and at 1 atm pressure

How Many Moles Of Hydrogen Iodide Gas Are Produced From The Reaction Of 0.500 Mol Of Hydrogen Gas?

How many moles of hydrogen iodide gas are produced from the reaction of 0.500 mol of hydrogen gas?
__H2(g) + __I2(g) –> __HI(g)
Can anyone explain this one to me? Finals are coming and these questions have been getting me all year.

What Is The Mass Of Hydrogen Gas Produced By The Reaction?

Some iron wire weighing 8.0 g is placed in a beaker and covered with 17.2 g of dilute hydrochloric acid. The acid reacts with the metal and gives off hydrogen gas, which escapes into the surrounding air. After reaction, the contents of the beaker weigh 18.9 g. What is the mass of hydrogen gas produced by the reaction?