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vichka [17]
4 years ago
9

HELP TIMED !!!!

Chemistry
2 answers:
Troyanec [42]4 years ago
6 0
Hello there what is the question?

kipiarov [429]4 years ago
3 0

Answer:

Helium is one of the lightest gas that is found to be stored in the interior of the earth's crust. This helium gas is formed from the constant radioactive decay process. During the time of radioactive decay, the radioactive elements  decays and give rise to the formation of alpha particles, which are positively charged. When a pair of electrons are combined with these alpha particles then it produces helium atom.

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What are the important chemical reactions in the food industry
Andru [333]
1 of them would be baking or cooking because you can't redo that out of the same things. if that makes since.
8 0
3 years ago
A researcher studying the nutritional value of a new candy places a 4.70g sample of the candy inside a bomb calorimeter and comb
Luba_88 [7]

Answer:

Calories of candy = 5.1  kcal /g

Explanation:

Given data:

Mass of candy = 4.70 g

Change in temperature = 2.46 °C

Specific heat capacity of calorimeter = 40.50 Kj/°C

Calories present per gram = ?

Solution:

Formula

Cal of candy  = specific heat capacity × change in temperature / mass

C = c . ΔT/m

C = 40.50 Kj/°C × 2.46 °C / 4.70 g

C = 99.63 kj /4.70 g

C = 21.2 kj/ g

C =  21.2 kj/ g × 0.239 kcal/kj

C = 5.1  kcal /g

3 0
3 years ago
Which of these chemical formulas represents both an element and a molecule?
inna [77]
O2.

Because it is only made up of one type of element it is an element. Howevern there is more than one oxygen atom because oxygen cannot exist as a single atom, therefore making it a molecule as well.
8 0
3 years ago
Read 2 more answers
A lab technician mixed a 540 ml solution of water and alcohol. if​ 3% of the solution is​ alcohol, how many milliliters of alcoh
DochEvi [55]
3% = 0.3
.03*540 = 16.2
540-16.2 = 523.8

Meaning 16.2 milliliters alcohol and 523.8 milliliters water. If my math is correct.

7 0
3 years ago
Which description of salt is a chemical property? No combustion Odorless Salty taste Solid does not conduct electricity
Marina86 [1]
"No combustion", is the chemical description here.

Hope this helps!
5 0
3 years ago
Read 2 more answers
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