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nlexa [21]
3 years ago
5

An atom has 19 protons and 20 neutrons. what is the atomic number with steps​

Chemistry
2 answers:
sergey [27]3 years ago
4 0

Answer:

39

Explanation:

add em up

NeX [460]3 years ago
4 0

Answer:

It's 39 I hope it is correct answer

Explanation:

HAVE A NICE DAY

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3 years ago
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stiv31 [10]

Answer:

Explanation:

he pH of the water will determine the toxic effects, if any, of these substances.

8 0
2 years ago
Consider the titration of 25.0 mL of 0.340 M HCl with 0.160 M NaOH. What volume of NaOH is required to reach the equivalence poi
denis23 [38]

Answer:

53.1 mL NaOH

Explanation:

3 0
2 years ago
A solution of NaOH had a concentration of 20 g/dm3 What mass of NaOH would there be in 250 cm3 of the solution?
Olegator [25]

Answer:

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Explanation:

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3 years ago
Match each prefix with its description.
Wewaii [24]

Explanation:

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