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Rus_ich [418]
2 years ago
5

Which of these pairs of atoms are isotopes?

Chemistry
1 answer:
Troyanec [42]2 years ago
6 0

Answer:

c

Explanation:

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A voice echo

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Acceleration is defined as the rate of change for which characteristic?
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3 years ago
What mass of sodium hydroxide is needed to neutralise 24.5kg of sulfuric acid <br> H2SO4 + N2 = 2NH3
sveticcg [70]

Answer:

23.92 g

Explanation:

Molar mass of H2SO4 = (2×1)+32+(16×4)= 2+32+48= 82g/mol

H2SO4 + 2NaOH ---> Na2SO4 + 2H2O

I mole of H2SO4 = 2 moles of NaOH

24.5/82 = 24.5/82 × 2

= 0.598 moles of NaOH will neutralize

Mass= mole× molar mass

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Mass= 0.598 × 40 = 23.92g of NaOH

7 0
3 years ago
A box has a mass of 150kg. If a net force of 3000N acts on the box, what is the box's acceleration?
zhannawk [14.2K]

Answer:

3000 ÷ 150

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3 years ago
Why does wood burn with a flame when it is a solid fuel
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