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
kherson [118]
3 years ago
5

When 0.875 g. of magnesium was heated in air, 1.25 g. of magnesium oxide

Chemistry
1 answer:
Ilia_Sergeevich [38]3 years ago
3 0

Answer:

1. What is the coefficient for calcium in the balanced equation?

2 Ca + 5 NaOH → 4 Na + 2 Ca(OH)2

2. The burning of 20.0 g of acetylene (C2H2) produces what mass of carbon dioxide? You must

write the equation, balance it and solve the mass-mass problem.

a. Balanced equation:

2 C2H2 + 5 O2  4 CO2 + 2 H2O

Explanation:

You might be interested in
During cellular respiration, plants take in _______ from the air and break down stored _______.
Zepler [3.9K]

Answer:

During cellular respiration, plants take in carbon dioxide from the air and break down stored glucose.

Explanation:

Before cellular respiration takes place in a plant, photosynthesis occurs and absorbs sunlight and carbon dioxide from the air. The process then produces oxygen and glucose, which are needed as the reactants for cellular respiration. Cellular respiration will break down the stored glucose to make energy to produce carbon dioxide and water. Then the cycle repeats itself.

7 0
3 years ago
What causes atoms to form covalent bonds?
navik [9.2K]

Answer:

to attain stability atoms form covalent bonds

7 0
2 years ago
PLEASE HELP!!!!!! WILL GIVE BRAINLIEST!!!! IT'S SUPER EASY
Nana76 [90]

the primary consumer in those photos would be C

6 0
3 years ago
Methane burns in the presence of oxygen to form carbon dioxide and water.
wlad13 [49]

Answer:

= 9.28 g CO₂

Explanation:

First write a balanced equation:

CH₄ + 2O₂ -> 2H₂O + CO₂

Convert the information to moles

7.50g CH₄ = 0.46875 mol CH₄

13.5g O₂ = 0.421875 mol O₂

Theoretical molar ratio CH₄:O₂ -> 1:2

Actual ratio is  0.46875 : 0.421875 ≈ 1:1

If all CH₄ is used up, there would need to be more O₂

So O₂ is the limiting reactant and we use this in our equation

Use molar ratio to find moles of CO₂

0.421875 mol O₂ * 1 mol CO₂/2 mol O₂=0.2109375 mol CO₂

Then convert to grams

0.2109375 mol CO₂ = 9.28114 g CO₂

round to 3 sig figs

= 9.28 g CO₂

5 0
3 years ago
Can someone find from which website this test is?
Nadusha1986 [10]

Answer:

Try quizlet, they have everything on there

Explanation:

8 0
3 years ago
Other questions:
  • Hydrochloric is added to a beaker containing a piece of zinc. As a result, zinc chloride is formed and hydrogen gas is released.
    5·1 answer
  • nickel(ii) carbonate + hydrobromic acid = nickel(ii) bromide + carbonic acid + bromine gas how do you balance this equation
    7·1 answer
  • This is two or more elements chemically combined in a fixed ratio.
    13·2 answers
  • If solid water is dropped into liquid water, will the solid iron sink or float?
    11·2 answers
  • At a certain concentration of H2 and NH3, the initial rate of reaction is 0.120 M / s. What would the initial rate of the reacti
    6·1 answer
  • The pressure inside of a tire is measured as
    10·1 answer
  • Mg (s) + 2 HCl (aq) --> MgCl2 (aq) + H2 (g)
    13·1 answer
  • A student wants to determine if a
    15·1 answer
  • Children have rights in order to ___________________________​
    9·2 answers
  • Find the pH of 0.0025M sodium benzoate
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!