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
Llana [10]
3 years ago
10

I need help asap

Chemistry
1 answer:
wlad13 [49]3 years ago
5 0
C because if we did not have that it would be hard for us to live.
You might be interested in
3. Explain how tectonic plate movement could create another supercontinent like Pangaea.
Zinaida [17]
Well transform boundaries are when 2 plates rub against each other and convergent boundaries and when plates come together and divergent boundaries are when plates move apart. So eventually one plate will collide into another then will another then again until it forms a Pangea
4 0
3 years ago
Read 2 more answers
I Bleached my white shirt for the first time yesterday. I thought it would get the stain out but it turned the spot yellow. Why?
Alex17521 [72]

Answer:

The base layer of the shirt ( ORIGINAL COLOR) before dyed white was  most likely yellow so the bleach lightened the colors to their original form

Explanation:

5 0
4 years ago
A solution of HCl has StartBracket upper H superscript plus EndBracket. = 0.01 M. What is the pH of this solution?
hoa [83]

Answer:

2

Explanation:

Data:

[H⁺] = 0.01 mol·L⁻¹

Calculation:

pH = -log[H₃O⁺] = -log(0.01) = -log(1) - log(10⁻²) = -0 - (-2) = 0 + 2 = 2

7 0
3 years ago
Please help
Mazyrski [523]

Answer:

Diagram Z

Explanation:

A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.

4 0
2 years ago
1. Metallic strontium crystallizes in a face-centered cubic lattice, with one Sr atom per lattice point. If the edge length of t
Zarrin [17]

Answer:

r=215pm

N_{Mn}=20

Explanation:

From the question we are told that:

Edge length of the unit cell l=608pm

a)

Generally the equation for The relationship between edge length and radius is mathematically given by

4r=\sqrt{2a}

Therefore

4r=\sqrt{2*608}

r=\frac{\sqrt{2*608}}{4}

r=215pm

b)

From the question we are told that:

Density \rho=7.297

Edge length of l=630.0 pm=>630*10^-{10}

Therefore Volume  is given as

V=l^3

V=630*10^-{10}^3

V=2.50047*10^{−22}

Generally the equation for Mass is mathematically given by

m=Volume*density

m=V*\rho

m=2.50047*10^{−22}*7.297

m=1.83*10^{-21}g

Therefore Molarity is given as

n=\frac{M}{Molar M}

n=\frac{1.83*10^{-21}g}{55}

n=3.32*10^{-23}

Finally The atoms in a unit cell is

N_{Mn}=Moles*Avogadro\ constant

N_{Mn}=3.32*10^{-23}*6.023*10^{23}

N_{Mn}=20

7 0
3 years ago
Other questions:
  • Explain why saltwater is considered a mixture
    14·2 answers
  • Investigating a fire scene, you determine several places where fires started. What might you guess about the cause of the fire?
    5·1 answer
  • At 10 K Cp,m(Hg(s)) = 4.64 J K−1 mol−1. Between 10 K and the melting point of Hg(s), 234.3 K, heat capacity measurements indicat
    14·1 answer
  • Which pair of acids would each react with barium hydroxide and have the net ionic equation: H+ + OH− → H2O
    14·1 answer
  • In this reaction, what is the correct coefficient for oxygen gas? ? h2 (g) + ? o2 (g)→ ? h2o(g)
    11·1 answer
  • Which of the following statements about elements is not true?
    9·1 answer
  • Help pls true or false
    5·1 answer
  • How many electrons are in an atom that has 25 protons and has an ion charge of negative 3
    14·1 answer
  • Helo helo helo genius.
    8·1 answer
  • Which of the following is a scientific question you could ask about the game
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!