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Kisachek [45]
2 years ago
7

Which statments are true about balancing chemical reactions?

Chemistry
1 answer:
frez [133]2 years ago
3 0
D atoms that are in only one of the reactions and only one of the products should be down first
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In the electron cloud model of the atom, an orbital is defined as the most probable(1) charge of an electron
Galina-37 [17]

The correct answer would be 3.) Location of an electron
3 0
3 years ago
Which of the following measurements is used to measure the enthalpy of combustion? A. None of these B. Measuring the change in t
DaniilM [7]

Answer: Option (C) is the correct answer.

Explanation:

In a substance, the total energy of its molecular motion is known as heat. Whereas when we measure the average energy of molecular motion of a substance then it is known as temperature.

So, any increase or decrease in temperature will lead to change in heat of a substance.

When one mole of a substance is burned then the amount of energy released  in the form of heat is known as heat of combustion.

Relation between heat and temperature is as follows.

                    q = m \times C \times \Delta T

Thus, we can conclude that to measure the enthalpy of combustion it cannot be measured, only calculated using the equation; q = mc \Delta T.

4 0
3 years ago
How many grams are there in 7.5x10^23 molecules of H2SO4
horsena [70]
Moles of H2SO4= 7.5x10^23/ 6.02x10^23 = 1.25 (3sf) moles of H2SO4

Mass of 1 mole of H2SO4= 98.1g

Therefore mass of 7.5x10^23 molecules of H2SO4= 122.63g 
6 0
3 years ago
Please help! it’s due date is in a few minutes
Licemer1 [7]

Answer:

40'0'

Explanation:

X is smaller than |-40|

7 0
2 years ago
Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? Explain
azamat

Answer: argon

Explanation:

7 0
3 years ago
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