1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
scoundrel [369]
3 years ago
9

How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl?

Chemistry
1 answer:
neonofarm [45]3 years ago
4 0
1) Find the number of mols of HCl in 5.2 liters of 4.0M solution:

n = M*V(L) = 4.0 mol/L * 5.2 L = 20.8 mol

2) Find the number of mols of Mg that will react with 20.8 mol of HCl, using the coefficients of the balanced equation

[1mol Mg / 2 mol HCl] * 20.8 mol HCl = 10.4 mol Mg

3) Transform mol to mass using the atomic mass:

10.4 mol Mg * 24.3 g/mol = 252.7 g of Mg.

You might be interested in
The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to produc
Elis [28]

Answer: 9.9 grams

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of H_2

\text{Number of moles}=\frac{8.150g}{2g/mol}=4.08moles

b) moles of C_2H_4

\text{Number of moles}=\frac{9.330g}{28g/mol}=0.33moles

H_2(g)+C_2H_4(g)\rightarrow C_2H_6(g)

According to stoichiometry :

1 mole of C_2H_4 combine with 1 mole of H_2

Thus 0.33 mole of C_2H_4 will combine with =\frac{1}{1}\times 0.33=0.33 mole of H_2

Thus C_2H_4 is the limiting reagent as it limits the formation of product.

As 1 mole of C_2H_4 give =  1 mole of C_2H_6

Thus 0.33 moles of C_2H_4 give =\frac{1}{1}\times 0.33=0.33moles  of C_2H_6

Mass of C_2H_6=moles\times {\text {Molar mass}}=0.33moles\times 30g/mol=9.9g

Thus theoretical yield (g) of C_2H_6 produced by the reaction is 9.9 grams

7 0
3 years ago
Glve the number of significant figures in this number: 40
Eddi Din [679]

Answer:

1

only 4 is the significant figure

we take tailing zeroes as significant figures only in case of decimals

3 0
3 years ago
Read 2 more answers
The equation shows lead reacting with sulfuric acid to produce lead sulfate and hydrogen gas. mc012-1.jpg Which type of chemical
krok68 [10]
Single replacement and I know that for sure if you need me to explain i can but its Single replacement <span />
4 0
3 years ago
Read 2 more answers
What is the chemical reaction in the equation NaCl (s) → Na + (aq) + Cl - (aq)
kondor19780726 [428]

Answer:

exothermic reaction

when compounds dissolve they produce heat hence a chemical reaction that produces heat is known as endothermic reaction.

6 0
3 years ago
C5H12() + 502(9)=
Mariulka [41]
The correct answer is B
3 0
3 years ago
Other questions:
  • What is the half-life of an isotope that decays to 6.25% of its original activity in 18.9 hours?
    9·1 answer
  • What are the 3 parts of a nucleotide
    5·2 answers
  • What particles make up the atomic nucleus
    9·2 answers
  • Which of the following is a compound? A. Sn B. CO C. H D. Mg
    9·1 answer
  • 118.5 g piece of lead is heated with 4,700 J of energy. If the specific heat of lead is 0.129 J/ (g ⋅ °C), and the lead’s initia
    12·1 answer
  • The decomposition of dinitrogen pentoxide, N2O5, to NO2 and O2 is a first-order reaction. At 60°C, the rate constant is 2.8 × 10
    10·1 answer
  • An object's velocity can be described by its acceleration and direction.<br><br> True<br> False
    12·1 answer
  • How many atoms are in 175.8 grams of Hg?
    6·1 answer
  • PH que tendra una solución cuya concentracion de [OH-] = 1x10-4
    11·1 answer
  • If equal masses of each substance absorb the same amount of heat, which substance undergoes the greatest temperature change
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!