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kirill [66]
3 years ago
5

How can scientists determine when a radioactive substance will no longer be dangerous

Chemistry
1 answer:
LekaFEV [45]3 years ago
7 0
They can probably use those radioactive measuring things. But they will still use proper caution around it.
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2A1Cl3 + 3Na CO3→ Al2(CO3)3 + 6NaCl
forsale [732]

Answer:

1. aluminum chloride

2. 3

3. 9

Explanation:

1. Know the names

2. reactants are on left side products are on right side

4 0
3 years ago
What is the molar mass of magnesium nitride (Mg3N2) if the molar mass of magnesium is 24.31g and nitrogen is 14.01g?
iren [92.7K]
Mg3N2

Mg - 3 times 24.31 g=  72.93 g

N - 2 times 14.01 g=  +  28.02 g
 Molar Mass=    100.95 g/mol Mg3N2
4 0
3 years ago
Which method of heat transfer takes place when particles of matter vibrate and collide with each other in direct contact? Conduc
AleksandrR [38]

Answer:

The answer is Conduction.

Explanation:

Conduction occurs when particles collide and vibrate each other.

7 0
3 years ago
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If a wave produced by a fireworks explosion is that light wave or sound wave
gregori [183]

Answer:

The wave produced by a fireworks "explosion" is a light wave.

Explanation:

8 0
3 years ago
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Your lab partner told you that he measured out 25.0 mL of the unknown acid solution. But he actually went above the line on the
Sav [38]

Answer:

Final calculated molarity of the unknown acid be  lower than the actual concentration.

Explanation:

Volume required unknown acid = V= 25.0 mL

Volume actually measure was more than V that is = V'

V' > V

Molarity of the solution is the moles of compound in 1 Liter solutions.

Molarity=\frac{\text{Mass of compound}}{\text{Molar mas of compound}\times Volume (L)}

As we can see from the formula that molarity is inversely proportional to the volume of the solution.

Molarity\propto \frac{1}{Volume}

  • Molarity of solution decreases with increase in volume
  • Molarity of solution Increases with decrease in volume.

We have added more volume than required which will be increase the volume of solution and the molarity of the solution will lower than the actual value.

6 0
3 years ago
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