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
seropon [69]
3 years ago
6

Assume that 12.0 g of oxygen are reacted with 20.0 g of magnesium to produce magnesium oxide.

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
8 0
Write out the eqn of magnesium and oxygen. this should be under “metals” chapter. do revise.

next, find the mols of both oxygen and magnesium. compare the ratios and find the LIMITING REAGENT.

use the mols of the limiting reagent to compare with the mols of the product.

take the mols of the product/mr of the product.

this will give u the mass.
You might be interested in
What is the value of for this aqueous reaction at 298 K? <br> A+B↽⇀C+D<br> ΔG°=12.86 kJ/mol<br> K=
kogti [31]

Answer:

Kc = 0.5951 (4 sig. figs.)

Explanation:

For A + B ⇄ C + D at standard thermodynamic conditions (298K, 1atm)

ΔG = ΔG° + R·T·lnQ => 0 = ΔG° + R·T·lnKc => ΔG° = - R·T·lnKc

=> lnKc = - ΔG°/R·T

ΔG° = +12.86 Kj/mol

R = 8.314 Kj/mol·K

T = 298K

lnKc = - (+12.86Kj) / (8.314Kj/mol·K)(298K) = - 0.519 mol⁻¹

Kc = e⁻⁰°⁵¹⁹ mol⁻¹ = 0.5957 mol⁻¹ (4 sig. figs.)

5 0
3 years ago
The sodium hydroxide solution (0.088 mol/dm3) is then used to titrate an unknown nitric acid sample. 25.0 mL of nitric acid solu
Marina86 [1]

Answer:

hydrogen helium lithium berrylium boron carbon nitrogen

7 0
2 years ago
How can room things in a house save energy? List at least 5 ways in which you can save heat energy. Explain how each one can sav
pychu [463]

Answer:

brainly

Explanation:

Adjust your day-to-day behaviors.

Replace your light bulbs.

Use smart power strips.

Install a programmable or smart thermostat.

Purchase energy efficient appliances.

3 0
2 years ago
HELPPP<br> What do you think caused this land formation ?
Arturiano [62]

Answer:

Erosion/Weathering

Explanation:

Because the rock is exposed to the ocean, the constant push and pull of the water against the rock erodes the material away and moves it elsewhere. The wind likely aided in this process as well. This caused the big gap in the center of the rock.

6 0
3 years ago
How many joules of energy are made by the loss of 100kg of mass using the formula E=mc2? please help!!!
asambeis [7]

Answer:

E = 3 × 10¹⁰ J

Explanation:

Mass, m = 100 kg

We need to find energy made by the loss of 100 kg of mass. The formula between the mass and energy is given by :

E = mc²

Where c is speed of light

Putting all the values, we get :

E = 100 kg × (3×10⁸ m/s)²

= 3 × 10¹⁰ J

So, the required energy is 3 × 10¹⁰ J.

6 0
3 years ago
Other questions:
  • If the radius of copper is 0.128 nm, what is the pd of the (100) plane for copper in m-2?
    5·1 answer
  • Chemical formula for copper I acetate
    15·1 answer
  • A certain metal fluoride crystallizes in such a way that the fluoride ions occupy simple cubic lattice sites, while the metal io
    6·1 answer
  • Genetically determined characteristics
    10·1 answer
  • In H2SO4, the oxidation number of H is , that of S is , and that of O is .
    12·1 answer
  • Wich symbols represent SI units for temperature?
    9·2 answers
  • In the following description of Fe, some of the properties are physical and some are chemical. Identify which of the properties
    6·1 answer
  • Calculate the Zn conc. of Zn/Zn++ // Cl/Cl- 0.1M Emf=2.21v
    11·1 answer
  • Using the periodic table, find the neutral atom that has the same electron configuration as 1s²2s22p.
    15·1 answer
  • The metric prefix _____ means 1,000
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!