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agasfer [191]
3 years ago
8

this is due tonight and i need some help w/ it! how do mass and distance affect the strength of the force of gravity? -btw i nee

d a few sentences!
Chemistry
1 answer:
viktelen [127]3 years ago
8 0

Answer:

Mass is the amount of matter in an object. The distance is how far apart two places are from each other. They are related because the more mass the more gravitational force as then there is more pressure and then the gravitational force attracts the two objects closer. The more distance, the less the gravitational force as then the gravitational force will have more trouble attracting the two objects toward each other.

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The reaction A + B ⟶ C + D rate = k [ A ] [ B ] 2 A+B⟶C+Drate=k[A][B]2 has an initial rate of 0.0640 M / s. 0.0640 M/s. What wil
Lubov Fominskaja [6]

Answer :

(1) The initial rate when [A] is halved and [B] is tripled is, 0.288 M/s

(2) The initial rate when [A] is tripled and [B] is halved is, 0.096 M/s

Explanation:

The given rate law expression is:

Rate=k[A][B]^2

Now we have to determine the initial rate when [A] is halved and [B] is tripled.

The new rate law expression will be:

Rate=k\times (\frac{[A]}{2})\times (3\times [B])^2

Rate=k\times (\frac{[A]}{2})\times 9\times [B]^2

Rate=k\times (\frac{9}{2})\times [A]\times [B]^2

Given:

Initial rate = 0.0640 M/s

As, Initial rate = k[A][B]^2 = 0.0640 M/s

Thus,

Rate=(\frac{9}{2})\times 0.0640M/s

Rate=0.288M/s

Now we have to determine the initial rate when [A] is tripled and [B] is halved.

The new rate law expression will be:

Rate=k\times (\frac{[B]}{2})^2\times (3\times [A])

Rate=k\times (\frac{[B]^2}{4})\times 3\times [A]

Rate=k\times (\frac{3}{4})\times [A]\times [B]^2

Given:

Initial rate = 0.0640 M/s

As, Initial rate = k[A][B]^2 = 0.0640 M/s

Thus,

Rate=(\frac{3}{4})\times 0.0640M/s

Rate=0.096M/s

5 0
4 years ago
100 POINTS. PLEASE HELP!!! born haber cycle problem b. need to find enthalpy of atomization of Mn. I attempted it but I keep get
Rom4ik [11]

Answer:

The Born Haber cycles is an adaption of Hess’s law to calculate lattice enthalpy from other data

The lattice enthalpy cannot be determined directly. We calculate it indirectly by making use of changes

for which data are available and link them together in an enthalpy cycle the Born Haber cycle

Enthalpy of lattice formation

The Enthalpy of lattice formation is the standard enthalpy

change when 1 mole of an ionic crystal lattice is formed

from its constituent ions in gaseous form. Na+

(g) + Cl- (g)  NaCl (s) [Latt H = -787 kJ mol-1

]

Enthalpy of lattice dissociation

The Enthalpy of lattice dissociation is the standard enthalpy

change when 1 mole of an ionic crystal lattice form is

separated into its constituent ions in gaseous form.

NaCl (s)  Na+

(g) + Cl- (g) [Latt H = +787 kJ mol-1

]

Generally Lattice Enthalpy refers to the enthalpy change when a lattice is made from gaseous ions.

Some exam boards refer to the opposite process at tim

Explanation:

7 0
2 years ago
What would happen if the lid of a jar filled with helium gad was removed?
yawa3891 [41]
The helium would expand into the air of the room. Depending on how big the room is, and the amount of helium in the jar, it could cause damage to health. The only way this would happen is if the room was small and the jar was big.

I hope this helps!
7 0
3 years ago
It is safe to stand on the top step of a ladder provided it is braced properly. A) True B) False
Roman55 [17]

FALSE You are never allowed to stand on the top of the ladder even if all legs are on the ground

3 0
3 years ago
Write the balanced COMPLETE ionic equation for the reaction when aluminum nitrate and sodium hydroxide are mixed in aqueous solu
rjkz [21]

Answer:See explanation

Explanation:

MOLECULAR REACTION EQUATION;

Al(NO3)3(aq) + 3NaOH(aq) --->Al(OH)3(s) +3NaNO3(aq)

complete ionic equation:

Al^3+(aq) + 3NO3^-(aq)  + 3Na^+(aq) + 3OH^-(aq) ---->Al(OH)3(s) + 3Na^+(aq) + 3NO3^-(aq)

Net ionic reaction equation;

Al^3+(aq) + 3OH^-(aq) ------> Al(OH)3(s)

8 0
3 years ago
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