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antoniya [11.8K]
3 years ago
11

How much of a 50g sample of 85Kr will remain after 2 half-lives?

Chemistry
1 answer:
Rashid [163]3 years ago
8 0

Answer:

i need help with my work

Explanation:

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Plz help me asap i will die or else :c
zhannawk [14.2K]

Answer: give me more of an explaination

Explanation:

3 0
3 years ago
Read 2 more answers
Aluminum has a density of 2.7 g/cm3, how much space in cm3 would 81 grams of aluminum occupy? Show steps to answering this equat
Evgesh-ka [11]

Answer:

30 cm³

Explanation:

Step 1: Given data

  • Density of aluminum (ρ): 2.7 g/cm³
  • Mass of aluminum (m): 81 g
  • Volume occupied by aluminum (V): ?

Step 2: Calculate the volume occupied by aluminum

The density of aluminum is equal to its mass divided by its volume.

ρ = m/V

V = m/ρ

V = 81 g / 2.7 g/cm³

V = 30 cm³

4 0
3 years ago
Which is an example of flow of heat through conduction
JulsSmile [24]

Answer:

a metal spoon left in boiling water

Explanation:

5 0
3 years ago
Balanced equation for the neutralization of these 2. HCl , Ca(OH)2
Ghella [55]
Balanced equation:

<span>2 HCl + 1 Ca(OH)</span>₂<span> = 1 CaCl</span>₂<span> + 2 H</span>₂<span>O
</span>
hope this helps!


5 0
3 years ago
Read 2 more answers
Help pls!!!!!!!!!!!!!​
UkoKoshka [18]

Answer:

1.   C + O₂ → CO₂

2.  C + CO₂ → 2 CO

3. Fe₂O₃ + 3 CO → 2 Fe + 3 CO₂

4 0
3 years ago
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