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Snezhnost [94]
3 years ago
13

The boiling point and distillation temperature of a substance are the same. true false

Chemistry
1 answer:
Novosadov [1.4K]3 years ago
3 0
The boiling point and distillation temperature of a substance are the same. The answer would be True
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According to the diagram below, a bacterial cell does not contain
Pavlova-9 [17]

Answer:

nucleus

Explanation:

3 0
2 years ago
What is the solution to the problem expressed to he correct number of significant figures? 12.0/7.11
Law Incorporation [45]

Answer: The solution to the problem expressed to he correct number of significant figures is 1.69

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

The rule applied for multiplication and division is :

The least precise number determines the number of significant figures in the answer.

As 12.0 has 3 significant digits and 7.11 also has 3 significant digits, the answer would also contain 3 significant digits.

For \frac{12.0}{7.11}=1.69

Thus the solution to the problem expressed to he correct number of significant figures is 1.69

6 0
3 years ago
7.In which state of matter molecules have more energy to vibrate.​
viva [34]

Answer:

Solid, liquid or gas. So there is movement no matter the state. The key variable is density. The higher the density the less movement. In solids the motion can be so small it's very hard to measure. Gas on the other hand is easy the motion being large. Bear in mind temperature plays a big role. Higher temps bring faster motion. Finally the pressure of the gas brings about less motion the higher it is as the molecules are closer together & can't move as much.

Explanation:

8 0
2 years ago
A 500 ml aqueous solution of na3po4 was prepared using 82g of the solute. what is the molarity​
liraira [26]

Answer:

1 M

Explanation:

The molarity of a solution, M, is a measure of the concentration of that solution and it refers to the number of moles of solute (mol) per liter (L) of solution. The molarity (M) can be calculated using the formula:

M = number of moles (n) /volume (V)

In this question, a 500 ml aqueous solution of Na3PO4 was prepared using 82g of the solute.

Molar mass of Na3PO4 = 23(3) + 15 + 16(4)

= 69 + 31 + 64

= 164g/mol

Mole = mass/molar mass

mole = 82/164

mole = 0.5 mol

Volume in Litres (L) = 500 ml ÷ 1000 = 0.500L

Therefore, Molarity (M) = 0.5/0.500

Molarity = 1 M or 1 mol/L

7 0
3 years ago
1.You have three elements, A, B, and C, with the following electronegativity values:
Anna [14]
<span>A ) AB is a compound . Ionic compound because the electronegativity differs a lot in both !
</span><span>
B) Same

C ) Compound . But the bond between them is covalent .
 
D ) AB is an ionic compound . A is the cation and B is the anion </span>
4 0
3 years ago
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