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Dennis_Churaev [7]
3 years ago
14

A change of state does not affect an object's what?

Chemistry
1 answer:
DedPeter [7]3 years ago
3 0

Answer:

mass.

Explanation:

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Is a burning log an exothermic or endothermic event if the log is the system?
denpristay [2]
It would be endothermic because the log is in the system.
6 0
2 years ago
A sample of rubidium contains two different isotopes. 72.15% of the sample
Leona [35]

Answer:

Average atomic mass  = 85.557 amu.

Explanation:

Given data:

Percent abundance of Rb-85 = 72.15%

Percent abundance of Rb-87 = 27.85%

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass = (72.15×85)+(27.85×87) /100

Average atomic mass =  6132.75 + 2422.95 / 100

Average atomic mass = 8555.7 / 100

Average atomic mass  = 85.557 amu.

4 0
2 years ago
What type of bond joins glycerol to fatty acids?
Elina [12.6K]

Answer:

Ester Linkages

Explanation:

In a fat molecule, the fatty acids are attached to each of the three carbons of the glycerol molecule with an ester bond through the oxygen atom.

You're welcome

3 0
3 years ago
The density of silver is 10.5 g/cm3. A piece of silver with a mass of 101 g would occupy a volume of ________ cm3.
laiz [17]

i believe it is 1060.5

4 0
3 years ago
Two substances that have the same number of moles of representative particles always have: Answer the same number of atoms the s
Nesterboy [21]
<span>same no of atoms
b/c no. of atoms = moles * avogadro's no (6.022 X 10^23)</span>
7 0
3 years ago
Read 2 more answers
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