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
Hunter-Best [27]
3 years ago
10

Magnesium reacts with hydrochloric acid (HCl) as follows. Mg(s) + 2HCl(aq) -->MgCl(2)+H(2)(g) How many milliliters of hydroge

n gas are produced by the reaction 0.020 mol of magnesium with excess of hydrochloric acid at STP? 0.448 mL 0.45 mL 448 mL 450 mL
Chemistry
1 answer:
max2010maxim [7]3 years ago
5 0
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
You might be interested in
Which measurement contains three significant figures?
maxonik [38]
The answer is C because you don’t have to worry about the number in front of the decimal unless it is something greater than zero. A- Doesn’t have there sig figs. B- The zero after the 5 doesn’t change it. D- The three at the end doesn’t matter because it does not round it up.
8 0
2 years ago
Read 2 more answers
PLEASE HELP ME ASAP!!! <br> I need the answer to #9. If you can show work please do.
scoundrel [369]

The correct answer would be 32/16s


7 0
3 years ago
What does condensation mean in the water cycle?
tester [92]
Condensation<span> is the process by which </span>water<span> vapor in the air is changed into liquid </span>water<span>. </span>Condensation<span> is crucial to the </span>water cycle<span> because it is responsible for the formation of clouds. ... </span>Condensation<span> is the opposite of evaporation.</span>
4 0
3 years ago
Read 2 more answers
Complete the table to summarize the properties of the different subatomic particles. Type in your answers.
Aloiza [94]

<h2>Complete the table to summarize the properties of the different subatomic particles. </h2>

Explanation:

Atom

It is a smallest particle which cant exist independently.

According To Dalton, atom was indivisible but later on, it was proved that atom can be subdivided into sub atomic particles called electron, proton & neutron.

These subatomic particles have marked properties .

Proton

  • It was discovered by E.Goldstein .
  • It is positively charged particle
  • It is present in nucleus .
  • Its mass is equal to 1.6726219 × 10⁻²⁷ kilograms

Neutron

  • It was discovered by E.chadwick .
  • It is neutral
  • It is present inside the nucleus .
  • It's mass is equal to 1.674927471×10⁻²⁷ kg

Electron

  • It was discovered by J.J Thomson .
  • It has negative charge .
  • It's mass is equal to 9.10938356 × 10⁻³¹ kilograms
  • It is present outside the nucleus in shells .
4 0
3 years ago
Read 2 more answers
How do you make liquid nitrogen icecream
Harrizon [31]
<span>Add any other </span>liquid<span> flavorings you might want. Put on your gloves and goggles. Pour a small amount of </span>liquid nitrogen<span> directly into the bowl with the </span>ice cream<span> ingredients. Continue to stir the </span>ice cream<span>, while slowly adding more </span>liquid nitrogen<span>.</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • What property do all of the group 18 elements have that make them stand out from other elements?
    10·1 answer
  • Which family does barium ba,belong to?
    7·1 answer
  • In which of the following choices is the oxidation number incorrect?
    8·1 answer
  • Which of the following would release the most heat upon cooling from 75*C to 50*C?
    12·2 answers
  • The total mass of a chemical reaction always _____.
    12·2 answers
  • Which of the following changes depending on the strength of the gravity field it is in?
    13·2 answers
  • 2NO(g) + O2 (g) --&gt; 2NO2
    8·1 answer
  • What is rises when boilings happen?​
    5·2 answers
  • What is the purpose of the cooling tower?
    5·1 answer
  • Students are investigating the differences in open and closed systems. They heated 2 containers of water. They recorded their re
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!