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3 years ago

When you drop an object, slows it down

Chemistry

2 answers:

sashaice [31]3 years ago

7 0

Gravity slows it down dramatically so that is why it slows down

Rom4ik [11]3 years ago

3 0

Gravity pulls the object down toward the ground but friction or drag slows it down. drag happens when a object has a adjacent surface that has a rough texture and catches the air and slows it down hope this helps.

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Consider the equilibrium: HCOOH(aq) + F-(aq) <----> HCOO-(aq) + HF (aq) Given that the Ka of HCOOH = 1.8 x 10-4 and the Ka

Aleks [24]

Hey there!:

K = Ka * Kb / Kw

Ka = 1.8*10⁻⁴

Kb = 10⁻¹⁴ / 6.8*10⁻⁴

K = 1.8*10⁻⁴ * ( 10⁻¹⁴/ 6.8*10⁻⁴ ) * ( 1 / 10⁻¹⁴ )

K = = 1.8 / 6.8

K = 0.265

Answer A

Therefore:

K is less than on the forward reaction is not favorable .

Hope That helps!

8 0

3 years ago

Which of these is a pure substance

Galina-37 [17]

Both A and B are the answer.

4 0

3 years ago

Which is a compound that contains carbon?

Anastaziya [24]

carbon dioxide, that is what I found

7 0

2 years ago

Suppose the reaction between nitrogen and hydrogen was run according to the amounts presented in Part A, and the temperature and

andrew11 [14]

Explanation:

Assuming that moles of nitrogen present are 0.227 and moles of hydrogen are 0.681. And, initially there are 0.908 moles of gas particles.

This means that, for $N_{2}(g) + 3H_{2}(g) \rightarrow 2NH_{3}$

moles of $N_{2}$ + moles of $H_{2}$ = 0.908 mol

Since, 2 moles of $N_{2}$ = $2 \times 0.227$ = 0.454 mol

As it is known that the ideal gas equation is PV = nRT

And, as the temperature and volume were kept constant, so we can write

$\frac{P(_in)}{n_(in)}$ = $\frac{P_(final)}{n_(final)}$

$\frac{10.4}{0.908}$ = $\frac{P_(final)}{0.454
}$

$P_(final)$ = $10.4 \times \frac{0.454}{0.908}$

= 5.2 atm

Therefore, we can conclude that the expected pressure after the reaction was completed is 5.2 atm.

7 0

3 years ago

An atom which has 9 protons, 8 neutrons, and 9 electrons will have an atomic mass of how many amu?

rjkz [21]

Answer:

Explanation:

Protons and Neutrons both have a mass of about 1 amu so you add them but electrons have a mass of 0 amu so they are left out.

8 0

2 years ago