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kati45 [8]
2 years ago
13

What element has 42 neutrons

Chemistry
2 answers:
pishuonlain [190]2 years ago
8 0

Answer:

Arsenic has 42 neutrons

salantis [7]2 years ago
4 0

Answer:

arsenic

Explanation:

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45 Gg = [? ]x10!?g<br> ]<br> =<br> ]
nlexa [21]

1. The coefficient (green) is 45

2. The exponent (yellow) is 9

<h3>Conversion scale</h3>

To convert from giga grams (Gg) to grams (g), the following coversion scale can be use:

1 Gg = 10⁹ g

With the above convesion scale, we can convert 45 Gg to g as follow

1 Gg = 10⁹ g

Therefore,

45 Gg = 45×10⁹ g

Thus, 45 Gg is equivalent to 45×10⁹ g. Hence, we can conclude as follow:

  • The coefficient (green) is 45
  • The exponent (yellow) is 9

Learn more about conversion:

brainly.com/question/21919505

6 0
3 years ago
Unit Test Unit Test Active 13 TIME REMAINING 01:31:26 Chemical A and Chemical B react in an exothermic reaction. What can be kno
Anastasy [175]

Answer:

More energy is released from the old substance than the new substance needs to form its chemical bonds

Explanation:

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5 0
3 years ago
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Which of the following substances is classified as a solution?
Ainat [17]

Answer:

Salt water

Explanation:

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3 0
3 years ago
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The compound methylamine, CH3NH2, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibrium
Veronika [31]

Answer:

Kb = [CH₃NH₃⁺] × [OH⁻] / [CH₃NH₂]

Explanation:

According to Brönsted-Lowry acid-base theory:

  • An acid is a substance that donates H⁺.
  • A base is a substance that accepts H⁺.

When methylamine reacts with water, it behaves as a Brönsted-Lowry base, according to the following reaction.

CH₃NH₂(aq) + H₂O(l) ⇄ CH₃NH₃⁺(aq) + OH⁻(aq)

The basic equilibrium constant (Kb) is:

Kb = [CH₃NH₃⁺] × [OH⁻] / [CH₃NH₂]

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3 years ago
What is 5 divided by 2.7​
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5 divided by 2.7 is 0.54
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