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2 years ago

5

What was the problem with Rutherford's model? a. It described a nucleus. c. It could not explain the chemical properties of elem

ents. b. It did not include electrons d. It described quantums.

1 answer:

schepotkina [342]2 years ago

7 0

<span>What was the problem with Rutherford's model?

</span>
<span> c. It could not explain the chemical properties of elements. </span>

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Which of the following elements will lose electrons to form an

photoshop1234 [79]

B and c...will lose electron(s) in forming an Ion.

P is an Anion
b..Fe. and c...Pb form Cations (+) by losing electrons.
d. Se is an Anion.

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2 years ago

At room temperature, one of the molecules is a gas and one is a liquid. Identify which structure is a gas and which is a liquid.

scoundrel [369]

It starts at the bottom and then it goes up into the air as evaporation and that’s when the air gets cooler so gas is cooler and the liquid would be hotter

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2 years ago

What hybridization is predicted for the nitrogen atom in the NO3– ion? sp2 d2sp3 dsp3 sp3 None of these choices are correct.

den301095 [7]

Answer: sp2

Explanation:

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2 years ago

Change the given word equation into balanced equation <br><br>Hydrogen+Chloride=Hydrogen chloride

nirvana33 [79]

Answer:

h2 +2cl -> 2hcl

Explanation:

h2 + cl -> HCl

h2 +2cl -> 2hcl

3 0

3 years ago

A 5.22 × 10−3−mol sample of HY is dissolved in enough H2O to form 0.088 L of solution. If the pH of the solution is 2.37, what i

OleMash [197]

Answer:

3.07 × 10⁻⁴

Explanation:

Step 1: Calculate the concentration of H⁺

We will use the definition of pH.

$pH = -log [H^{+} ]\\\[ [H^{+} ] = antilog -pH = antilog -2.37 = 4.27 \times 10^{-3} M$

Step 2: Calculate the concentration of HY

5.22 × 10⁻³ mol of HY are dissolved in 0.088 L. The concentration of the acid (Ca) is:

$Ca = \frac{5.22 \times 10^{-3} mol }{0.088L} = 0.0593M$

Step 3: Calculate the acid dissociation constant (Ka)

We will use the following expression.

$Ka = \frac{[H^{+}]^{2} }{Ca} = \frac{(4.27 \times 10^{-3} )^{2} }{0.0593} = 3.07 \times 10^{-4}$

6 0

3 years ago