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2 years ago

14

factors that affect the rate of a chemical reaction include which of the following? i. frequency of collisions of reactant parti

cles ii. kinetic energy of collisions of reactant particles iii. orientation of reactant particles during collisions

1 answer:

pickupchik [31]2 years ago

7 0

I, ii is the answer

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Can someone help me, please?

VikaD [51]

15. D is correct, exothermic reactions release heat

I am not sure about 16

7 0

2 years ago

How does ionization energy change as you

kykrilka [37]

Answer:

How does the energy required to remove an electron from an atom change as you move left to right in Period 4 from potassium through iron? ... A greater nuclear charge pulls the electrons closer to the nucleus, decreasing the atomic radius.

3 0

2 years ago

In a labratory activity the density of a sample of vanadium is determined to be 6.9g/cm^3 at room temperature. what is the perce

Snowcat [4.5K]

Answer:

c : 13%

Explanation:

Data Give:

Experimental density of vanadium = 6.9 g/cm³

percent error = ?

Solution:

Formula used to calculate % error

% error = [experimental value -accepted value/accepted value] x 100

The reported accepted density value for vanadium = 6.11 g/cm³

Put value in the above equation

% error = [ 6.9 - 6.11 / 6.11 ] x 100

% error = [ 0.79 / 6.11 ] x 100

% error = [ 0.129] x 100

% error = 12.9

Round to the 2 significant figure

% error = 13 %

So, option c is correct

7 0

3 years ago

How to balance barium and oxygen yield barium oxide

olga55 [171]

Barium : $Ba^{+2}$ with +2 being the charge
Oxygen : $O^{-2}$ with -2 being the charge

The given equation can be written as:
Ba + O = BaO

Since the sum charges of Barium and Oxygen equals 0, there is no need to add subscripts.

Both Ba and O appear on the left and right side of the equation once, so there is no need to add a coefficient.

Ba + O = BaO is balanced

4 0

2 years ago

Nitrogen can ionically bond with an unknown element X from group 2. How many ions of element X are required to create a stable i

Nataliya [291]

I can tell you there certainly is enough information, so we can eliminate the fourth option right away.
Group two elements tend to form 2+ cations, and nitrogen forms 3- anions. To make a stable substance, we need those to cancel out. Calling the group 2 element X:
N2X3 would cause the charge to be 2(-3) + 3(2) = 0
This would mean 3 ions of X and 2 anions of N would be a stable ionic compound.

8 0

3 years ago

Read 2 more answers