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tiny-mole [99]
3 years ago
14

I need help with 2. I’ll give brainliest

Chemistry
1 answer:
noname [10]3 years ago
8 0

Answer:

Lines of latitude run from east to west.

Explanation:

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2 or more forces that are not equal and opposite of one another can cause change in motion
DedPeter [7]

Answer:

D unbalanced force

Explanation:

i think

4 0
3 years ago
When 60 mL of 0.22 M NH4Cl is added to 60 mL of 0.22 M NH3, relative to the pH of the 0.10 M NH3 solution the pH of the resultin
densk [106]

Answer:

Will be more acidic

Explanation:

The equilibrium of NH3 in water is:

NH3(aq) + H2O(l) ⇄ NH4⁺(aq) + OH⁻(aq).

Where equilibrium constant, Kb, is:

Kb = 1.85x10⁻⁵ = [NH4⁺] [OH⁻] / [NH3]

From 0.10M NH3, the reaction will produce X of NH4⁺ and X of OH⁻ and Kb will be:

1.85x10⁻⁵ = [X] [X] / [0.10M]

1.8x10⁻⁶ = X²

X = 1.34x10⁻³ = [OH⁻]

As pOH = -log[OH⁻] = 2.87

And as pH = 14 - pOH

pH of the 0.10M NH3 is 11.13

Now, to find the pH of the NH4Cl and NH3 we need to use H-H equation for bases:

pOH = pKb + log [NH4⁺] / [NH3]

<em>Where pKb is -log Kb = 4.74 and [] are moles of both compounds.</em>

<em />

Moles of [NH4⁺] = [NH3] = 60mL, 0.060L*0.22M = 0.0132moles:

pOH = 4.74 + log [0.0132] / [0.0132]

pOH = 4.74

pH = 14 - 4.74 = 9.26

That means the pH of the resulting solution will be more acidic

7 0
3 years ago
How is the jet stream Influencing the weather conditions depicted on the map?
Sauron [17]

Answer:

B. The jet stream is causing cold fronts to move from east to west

Explanation:

I hope this helped!

4 0
3 years ago
People expend energy even when they sit perfectly still. Why?
Murljashka [212]
Because you’re body is using energy to keep you alive. Your breathing takes energy, so does your heart beat.
3 0
3 years ago
A compound containing 5.93% H and 94.07% O has a molecular mass of 34.02 g/mol determine the empirical and Molecular formula Of
Tom [10]

Answer:

7% 4)2(10

Explanation:

beacouse if you divide it you can get the answer

7 0
3 years ago
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