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Sav [38]
3 years ago
12

What is a career that involves science and a hobby?

Chemistry
2 answers:
Rzqust [24]3 years ago
4 0
Science teacher is a career that involves secince and a hobby 

Mashcka [7]3 years ago
3 0
Probbly any science job

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The element oxegyn, represented by 01, is classified as​
Mashutka [201]

Answer:

It is classified as a pure substance

Explanation:

Oxygen is a gas present in the atmosphere in the pure elemental form.

7 0
4 years ago
PLEASE HELP WITH QUESTION #3!!!!
Margarita [4]

Answer:

40 degrees

Explanation:

7 0
3 years ago
What would you need to do to calculate the molarity of 10g of NaCl in 2kg of water?
Artist 52 [7]

Answer:

B) we will convert the 10 g of NaCl into moles.

Explanation:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

we will convert the 10 g of NaCl into moles.

Number of moles of NaCl:

Number of moles = mass/molar mass

Number of moles = 10 g/ 58.44 gmol

Number of moles = 0.17 mol

1 Kg = 1 L

Molarity = 0.17 mol / 2 L

Molarity = 0.085 mol/L

Molarity = 0.085 M

6 0
3 years ago
Read 2 more answers
You need 5.0 grams of LiOH for a reaction, but all you have on hand is a 2.75 M aqueous LiOH solution. What volume of the soluti
Natalka [10]

Answer:

75.9mL of 2.75M LiOH solution

Explanation:

Molarity is an unit of concentration defined as the ratio between moles and liters. And the molar mass of LiOH is 23.95g/mol. With this information, it is possible to know the volume of solution you should add to supply 5.0g, thus:

5.0g LiOH × (1mol / 23,95g) × (1L / 2.75mol) × (1000mL / 1L) = <em>75.9mL of 2.75M LiOH solution</em>

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I hope it helps!

5 0
3 years ago
12. A heterogeneous mixture is a
TEA [102]
D. mixture in which its components retain their identity

In a heterogeneous mixture, multiple substances are mixed, but they don't chemically react and they remain chemically the same.
3 0
3 years ago
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