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Sliva [168]
3 years ago
13

Calculate the empirical formula of a compound with the following

Chemistry
1 answer:
Mashutka [201]3 years ago
4 0

Answer:

The empirical formula for this compound is thus CH2.

Explanation:

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A total solar eclipse occurs because the moon can totally block the sun. If the moon was smaller or farther from earth, a total
Setler79 [48]

Answer:

both

Explanation:

id say that it could occur but also not as much. the moon would be smaller and further from the earth to where we would barely be able to see it. if the full moon is barely visible then im sure the total solar eclipse wouldn't be as noticeable as it is now. but thats just my opinion

6 0
2 years ago
How is burning magnesium different than burning methane
olya-2409 [2.1K]

You can stop the burning of methane with water or carbon dioxide extinguishers but problems arise when you try to use this to stop the burning of the magnesium.

Explanation:

To burn magnesium (Mg) and methane (CH₄) you need to react them with oxygen:

2 Mg (s) + O₂ (g) → 2 MgO + heat

CH₄ (g) + 2  O₂ (g) → CO₂ (g) + 2 H₂O (g) + heat

However at that temperatures magnesium (Mg) is able to react with water (H₂O) and carbon dioxide (CO₂).

Mg (s) + 2 H₂O (l) → Mg(OH)₂ (s) + H₂ (g)

2 Mg (s) + CO₂ (g) → 2 MgO (s) + C (s)

So the safe option to stop the burning of the magnesium is to limit the oxygen in the air.

we have used the following notations:

(s) - solid

(g) - gas

(l) - liquid

Learn more about:

combustion reactions

brainly.com/question/13824679

#learnwithBrainly

6 0
3 years ago
Adding more water to instant coffee will make the coffee a darker color
ololo11 [35]
False , it will make it lighter
3 0
3 years ago
Read 2 more answers
How many hydrogen atoms are present in .46 moles of NH3
mixas84 [53]

Answer:

2.78 x 10²³

Explanation:

1 mole contains 6.02 x 10²³ hydrogen atoms => 0.46 mole contains 0.46(6.02 x 10²³) hydrogen atoms or 2.78 x 10²³ atoms.

Caution => When to use H vs H₂ => This problem is specific for 'hydrogen atoms' but some may simply say hydrogen. In such cases use H₂ or 'molecular hydrogen' is the focus. it's a matter of semantics, H vs H₂.    

3 0
3 years ago
How many grams of CaF2 would be needed to produce 1.12 moles of F2?
zlopas [31]

Step 1 : Write balanced chemical equation.

CaF₂ can be converted to F₂ in 2 steps. The reactions are mentioned below.

I] CaF_{2} + H_{2} SO_{4} -------> 2HF + CaSO_{4}

II] 2HF -------> H_{2} + F_{2}

The final balanced equation for this reaction can be written as

CaF_{2} + H_{2} SO_{4} --------->  CaSO_{4} + H_{2} + F_{2}

Step 2: Find moles of CaF₂ Using balanced equation

We have 1.12 mol F₂

The mole ratio of CaF₂ and F₂ is 1:1

1.12mol F_{2} *  \frac{1molCaF_{2}}{1molF_{2}}    = 1.12molCaF_{2}

Step 3 : Calculate molar mass of CaF2.

Molar mass of CaF₂ can be calculated by adding atomic masses of Ca and F

Molar mass of CaF₂ = Ca + 2 (F)

Molar mass of CaF₂ = 40.08 + 18.998 = 78.08 g

Step 4 : Find grams of CaF₂

Grams of CaF₂ = 1.12molCaF_{2} *\frac{78.08gCaF_{2}}{1mol CaF_{2}}

Grams of CaF₂ = 87.45 g

87.45 grams of CaF2 would be needed to produce 1.12 moles of F2.

4 0
2 years ago
Read 2 more answers
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