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
Bingel [31]
3 years ago
11

Which nonmetals in the atmosphere and their combinations are essential for life on earth

Chemistry
1 answer:
geniusboy [140]3 years ago
6 0
Nitrogen, oxegyn, and water are nonmetals in the atmosphere and combinations are essential for life on earth
You might be interested in
100 POINTS PLEASE HELP (PHOTOS INCLUDED)
pshichka [43]

Answer:

Explanation:

3.

Knowns: 100mL of solution; concentration of 0.7M

Unknown: number of moles

Equation: number of moles = volume * concentration

Plug and Chug: number of moles = 100/1000 * 0.7 = 0.07 mole

Final Answer: 0.07mole

2.

Knowns: 5.50L of solution; concentration of 0.400M

Unknown: number of moles

Equation: number of moles = volume * concentration

Plug and Chug: number of moles = 5.5 * 0.4 = 2.20 mole

Final Answer: 2.20 mole

6 0
2 years ago
Read 2 more answers
Does the tempurture of the vinegar affect the volcano flow
aleksandr82 [10.1K]
The temperature of vinegar does increase the rate of reaction according to the collision theory.

Hope this answers your question!


6 0
2 years ago
How many moles are there in 2 grams of Aluminum?
Salsk061 [2.6K]

Answer:

Number of moles: 0.07407407407

3 0
3 years ago
Inside a room, the air is often warmer near the ceiling then near the floor. Which of the following accounts for this difference
Vanyuwa [196]
The correct answer is C. convection
4 0
3 years ago
What is the percent ionization of a 1.8 M HC2H3O2 solution (Ka = 1.8 10-5 ) at 25°C?
xz_007 [3.2K]

Answer:

B) 0.32 %

Explanation:

Given that:

K_{a}=1.8\times 10^{-5}

Concentration = 1.8 M

Considering the ICE table for the dissociation of acid as:-

\begin{matrix}&CH_3COOH&\rightleftharpoons &CH_3COOH&+&H^+\\ At\ time, t = 0 &1.8&&0&&0\\At\ time, t=t_{eq}&-x&&+x&&+x\\ ----------------&-----&-&-----&-&-----\\Concentration\ at\ equilibrium:-&1.8-x&&x&&x\end{matrix}

The expression for dissociation constant of acid is:

K_{a}=\frac {\left [ H^{+} \right ]\left [ {CH_3COO}^- \right ]}{[CH_3COOH]}

1.8\times 10^{-5}=\frac{x^2}{1.8-x}

1.8\left(1.8-x\right)=100000x^2

Solving for x, we get:

<u>x = 0.00568  M</u>

Percentage ionization = \frac{0.00568}{1.8}\times 100=0.32 \%

<u>Option B is correct.</u>

8 0
3 years ago
Other questions:
  • How many colors would you see if you were analyzing a pure substance through chromatography?
    12·2 answers
  • If 19.2 liters of a gas are confined in a container at 269 kPa and 265 K. What is the volume of this gas at 310 K?
    8·1 answer
  • What is the equality in this reaction K+H2O-&gt;KHO+H2<br><br> Pls help me
    13·1 answer
  • 1). What are 4 factors that can affect Reaction Rates?
    14·1 answer
  • Which of the following is not among the three likely sources of heat during the formation of the Earth?
    11·1 answer
  • NaOH + HCl → NaCl + H2O
    14·1 answer
  • For a reaction: aA → Products, [A]o -4.3 M, and the first two half-lives are 56 and 28 minutes, respectively. Calculate k (witho
    13·1 answer
  • 9. How do airbags protect the occupants of a car in a crash? Use the following words in
    15·1 answer
  • If 17. 6 g of hcl are used to produce a 14. 5 l solution, what is the ph of the solution?.
    13·1 answer
  • If sodium is burned in chlorine gas, a compound is formed that dissolves in water. What colour will the solution be?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!