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
Marianna [84]
3 years ago
12

Which best describes the changes occurring to the earth's surface over time?

Chemistry
1 answer:
uysha [10]3 years ago
7 0

Answer:

I would say the answer is 2

You might be interested in
A membrane Is a flexible outer layer found on:
ratelena [41]

Answeridk:

Explanation:isk

8 0
3 years ago
What is the molarity of 6 moles (mol) of NaCl dissolved in 2 L of water?
Mama L [17]

Answer:

C:  \frac{6 mol}{2 L}

Explanation:

we can use the molarity equation

M = \frac{mol}{L}

so to find M we plug in what we know, which is 6 moles of NaCl and 2 L of water, which gives us:

\frac{6 mol}{2 L}

8 0
2 years ago
Ethylenediamine (en) forms an octahedral complex with Ni2+(aq) with the formula [Ni(en)3]2+. Ni2+(aq) + 3 en ⇌ [Ni(en)3]2+(aq) K
yawa3891 [41]

Answer:

3.125\times 10^{-19} mol/L is the concentration of Ni^{2+}(aq) in the solution.

Explanation:

Ni^{2+}(aq) + 3 en\rightleftharpoons [Ni(en)_3]^{2+}(aq)

Concentration of nickel ion = [Ni^{2+}]=x

Concentration of nickel complex= [[Ni(en)_3]^{2+}]=\frac{0.16 mol}{2 L}=0.08 mol/L

Concentration of ethylenediamine = [en]=\frac{0.80 mol}{2 L}=0.40 mol/L

The formation constant of the complex = K_f=4.0\times 10^{18}

The expression of formation constant is given as:

K_f=\frac{[[Ni(en)_3]^{2+}]}{[Ni^{2+}][en]^3}

4.0\times 10^{18}=\frac{0.08 mol/L}{x\times (0.40 mol/L)^3}

x=\frac{0.08 mol/L}{4.0\times 10^{18}\times (0.40 mol/L)^3}

x=3.125\times 10^{-19} mol/L

3.125\times 10^{-19} mol/L is the concentration of Ni^{2+}(aq) in the solution.

6 0
3 years ago
Please Please Please help + show the work please! :)
Mazyrski [523]
The gram-formula mass of Sm is 150.36 u, and the gram-formula mass of O is 15.999 u, so the gram-formula mass of SmO is about 150.36+15.999 = 160.36 g/mol.

So, there are about (9.30 * 10^-3)(160.36)=1.49 grams
4 0
2 years ago
Read 2 more answers
Find the mass of 1 mole of CuS
andrezito [222]
95.611 g/mol that's the answers
4 0
3 years ago
Other questions:
  • WITCH IS MADE BY WEATHERING ASH SEDEMENTS MAGMA OR MINERALS
    13·1 answer
  • Which of the following elements is most nonmetallic - most wanting of electrons?
    11·1 answer
  • Which atoms has the same numbers of protons and neutrons​
    10·1 answer
  • Pl help it’s for homwork
    14·1 answer
  • HELLP: WHAT IS THE 10 ORGANIZATIONS OF MATTER???<br><br><br> WILL GIVE BRAINLEST
    15·1 answer
  • Pls help i am in 8th grade k12
    13·1 answer
  • Urgentttt help will be much appreciated
    5·1 answer
  • Drugs that can be determined by acid base titration
    8·1 answer
  • Write some sentences about Respiration in your own words
    15·1 answer
  • Hat is used and produced in glycoloysis?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!