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mixer [17]
3 years ago
10

Huge amount of energy is being produced in the core of a hot star due to

Chemistry
1 answer:
ss7ja [257]3 years ago
5 0
The answer is below !


D.

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The amount of fat recommended for somone with a daily diet of 2000 Calories is 65 g. What percent of the calories in this diet w
Doss [256]

Answer:

29.575%

Explanation:

Data provided:

Calories taken in daily diet = 2000

Recommended amount of fat = 65 grams

Average number of calories for fat = 9.1 calories / g

Thus,

Number of calories in the diet with average number of calories for fat

= Recommended amount of fat × Average number of calories for fat

= 65 × 9.1

= 591.5 calories

Therefore,

the percentage of calories in his diet supplied = ( 591.5 / 2000 ) × 100

= 29.575%

6 0
3 years ago
Rusting of iron is a very common chemical reaction. It results in one form from Fe reacting with oxygen gas to produce iron (III
Vlada [557]

<u>Answer:</u> The given amount of iron reacts with 9.0 moles of O_2 and produce 6.0 moles of Fe_2O_3

<u>Explanation:</u>

We are given:

Moles of iron = 12.0 moles

The chemical equation for the rusting of iron follows:

4Fe+3O_2\rightarrow 2Fe_2O_3

  • <u>For oxygen gas:</u>

By Stoichiometry of the reaction:

4 moles of iron reacts with 3 moles of oxygen gas

So, 12.0 moles of iron will react with = \frac{3}{4}\times 12.0=9.0mol of oxygen gas

  • <u>For iron (III) oxide:</u>

By Stoichiometry of the reaction:

4 moles of iron produces 2 moles of iron (III) oxide

So, 12.0 moles of iron will produce = \frac{2}{4}\times 12.0=6.0mol of iron (III) oxide

Hence, the given amount of iron reacts with 9.0 moles of O_2 and produce 6.0 moles of Fe_2O_3

5 0
3 years ago
Consider the nuclear equation below.
Dovator [93]

Answer:

its NOT C

Explanation:

8 0
3 years ago
Read 2 more answers
Ok! Water is added to 200. ml of a 2.0 M solution of CaCI2 to increase the volume of the solution to 450. ml. So what is the new
dexar [7]

Answer:

0.89M

Explanation:

Because moles of solute do not change, we can write

M1V1 = M2V2

M - molarity, V - volume of solution

2.0M*200mL = M2*450mL

M2 = 0.89 M

7 0
3 years ago
Ello! lovely jewels ~<br>please help me with these questions ฅ^•ﻌ•^ฅ<br>Thanks in advance ​
QveST [7]

Answer:

<h2>#1</h2><h3>Which process is used for preparation of Sodium Carbonate? </h3>

<h2><em>Solvey process</em></h2><h3><em>is used for </em><em>t</em><em>h</em><em>e</em><em> </em><em>preparation of Sodium Carbonate</em><em>.</em></h3>

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<h2><em>Ten</em><em> </em><em>Molecules</em><em>.</em></h2><h3><em>As</em><em> </em><em>Washing</em><em> </em><em>Soda</em><em> </em><em>has</em><em> </em><em>formula</em><em> </em><em>NaCO3.10H2O</em><em> </em><em>.</em><em> </em><em>So</em><em> </em><em>it</em><em> </em><em>has</em><em> </em><em>t</em><em>en</em><em> </em><em>molecules</em><em> </em><em>of</em><em> </em><em>water</em><em> </em><em>crystallisation</em><em>.</em></h3>

6 0
2 years ago
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