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Ad libitum [116K]
2 years ago
10

18. What are two conservation practices that help prevent wind erosion?

Chemistry
1 answer:
Anna007 [38]2 years ago
6 0

Answer:the answer is B

Explanation:

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Consider an atom that has an electron in an excited state. The electron falls to a lower energy level. What effect does that hav
Leto [7]

Answer:

On returning to lowest energy state which is stable, it releases energy in the form of light. Hence, option A that is the electron releases energy in the form of light on falling to lower energy state from excite state.

4 0
3 years ago
The reaction for the formation of phosgene from carbon monoxide and chlorineCO + Cl2 --> COCl2 is first order in CO and secon
Ilya [14]

Answer:

r = k . [CO] .[Cl_{2}]

Explanation:

Let´s consider the following reaction:

CO + Cl₂ ⇒ COCl₂

The general rate law is:

r = k . [CO]^{m}. [Cl_{2}]^{n}

where,

r is the rate of the reaction

k is the rate constant

[CO] and [Cl₂] are the molar concentrations of each reactant

m and n are the reaction orders for each reactant

Since the reaction is first order in CO, m = 1. The overall order is the sum of all the individual orders. In this case, the overall order m + n = 2. Then,

m + n = 2

n = 2 - m = 2 - 1 = 1

The reaction is first order in Cl₂.

The rate law is:

r = k . [CO]. [Cl_{2}]

6 0
4 years ago
How many grams are in 9.8 moles of calcium
FrozenT [24]

Answer:

0.24 Moles i believe

Explanation:

5 0
3 years ago
Read 2 more answers
Which statement describes a reason scientists predict that carbon dioxide emissions will increase over the next few decades? Cho
Ad libitum [116K]

Answer:

Many countries are undergoing an increase in technology and standard of living.

Explanation:

7 0
3 years ago
What is the volume of 7.50x10^24 molecules of NH3 at STP
Bas_tet [7]

Answer:

V NH3 = 304.334 L

Explanation:

  • 1 mol ≡ 6.02 E23 molecules

⇒ moles NH3 = (7.50 E24 molecules)×(mol/6.022 E23 molecules)

⇒ mole NH3 = 12.454 mol

assuming ideal gas:

  • PV = RTn

STP:

∴ T = 25°C ≅ 298 K

∴ P = 1 atm

⇒ V NH3 = RTn/P

⇒ V NH3 = ((0.082 atm.L/K.mol)×(298 K)×(12.454 mol))/(1 atm)

⇒ V NH3 = 304.334 L

4 0
4 years ago
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