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JulijaS [17]
3 years ago
13

A red car and a blue car collide. What would be an example of Locard's exchange principle in this situation?

Chemistry
1 answer:
Lelu [443]3 years ago
8 0

Answer:

The blue car left paint on the red car

Explanation:

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Calculate the number of grams in 9.00 x 10²⁶ atoms of potassium.
shutvik [7]

Answer: 5.84x10^4

Explanation: You start with (9.00x10^26 atoms)x(1 mol/ 6.022x10^23)x(39.10 g/1 mol)

6 0
2 years ago
The half-life of a radioactive isotope is the amount of time it takes for a quantity of radioactive material to decay to one-hal
finlep [7]

Answer: The statement is true

Explanation:

The half-life of a radioactive isotope is the time taken for half of the total number of atoms in a given sample of the isotope to decay.

For instance

The half-life of radium is 1622 years. This means that if we have 1000 radium atoms at the beginning, then at the end of 1622 years, 500 atoms would have disintegrated, leaving 500 undecayed radium atoms

Thus, the statement is true

3 0
3 years ago
Why is it advisable to keep the storage bottle containing the naoh solution closed?
Gennadij [26K]
The pure form of sodium hydroxide is solid. Compared to the pure form, the aqueous form of the liquid is actually many times more volatile. For this very reason, it is advised that the bottles used to keep samples of NaOH be kept closed. 
5 0
3 years ago
If 14 moles of Oxygen burn how many moles of water are created? *
andrey2020 [161]

Answer:

A) 12 mol H2O.

Explanation:

Hello,

In this case, for the given reaction:

2C_2H_6+7O_2\rightarrow 4CO_2 + 6 H_2O

We notice that oxygen is in a 7:6 molar relationship with water, for that reason, the resulting moles of water turn out:

n_{H_2O}=14molO_2*\frac{6molH_2O}{7molO_2} \\\\n_{H_2O}=12molH_2O

Thus, the answer is A) 12 mol H2O.

Best regards.

6 0
3 years ago
An electron has an uncertainty in its position of 513 pm. What is the uncertainty in its velocity?
ella [17]
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-socratic.com</span>
7 0
4 years ago
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