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anygoal [31]
3 years ago
11

Positive ions from a base and negative ions from an acid form a_____ .

Chemistry
2 answers:
lara31 [8.8K]3 years ago
5 0
They will form a Salt
Anna35 [415]3 years ago
4 0

Explanation:

Bases are the species which contain OH^{-} ions whereas acids are the species which contain H^{+} ions. When positive ions from a base reacts with negative ions of an acid then it results in the formation of salt.

For example, when base NaOH reacts with hydrochloric acid then it results in the formation of sodium chloride and water.

The reaction is as follows.

        NaOH + HCl \rightarrow NaCl + H_{2}O

Thus, we can conclude that positive ions from a base and negative ions from an acid form a salt.

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The isotope Np-238 has a half life of 2.0 days if 96 grams of it were present on Monday how much will remain six days later
Kipish [7]

Answer:

12.02 g

Explanation:

From the question given above, the following data were obtained:

Half life (t½) = 2 days

Original amount (N₀) = 96 g

Time (t) = 6 days

Amount remaining (N) =..?

Next, we shall determine the rate of disintegration of the isotope. This can be obtained as follow:

Half life (t½) = 2 days

Decay constant (K) =?

K = 0.693 / t½

K = 0.693 / 2

K = 0.3465 /day

Therefore, the rate of disintegration of the isotope is 0.3465 /day.

Finally, we shall determine the amount of the isotope remaining after 6 days as follow:

Original amount (N₀) = 96 g

Time (t) = 6 days

Decay constant (K) = 0.3465 /day.

Amount remaining (N) =.?

Log (N₀/N) = kt / 2.303

Log (96/N) = (0.3465 × 6) / 2.303

Log (96/N) = 2.079/2.303

Log (96/N) = 0.9027

Take the anti log of 0.9027

96/N = anti log (0.9027)

96/N = 7.99

Cross multiply

96 = N × 7.99

Divide both side by 7.99

N = 96 /7.99

N = 12.02 g

Therefore, the amount of the isotope remaining after 6 days is 12.02 g

3 0
3 years ago
90.00 ml of 0.25 M calcium hydroxide are required to titrate 100.00 ml of hydrochloric acid. What is the molarity of the HCI?
bezimeni [28]

Answer:

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Explanation:

4 0
3 years ago
What is the answer please tell me
Nastasia [14]

Answer:

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Explanation:

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krok68 [10]
Your answer is C. its level of dissolved minerals ~A
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Answer:

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2 years ago
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