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Maru [420]
2 years ago
5

A sample of a compound contains 1.65 × 10²³ atoms of C, 0.552g of H, and 4.39g of O. What is the molecular formula and molar mas

s of the compound?​
Chemistry
1 answer:
Rudiy272 years ago
5 0

Answer:

C1 H2 O16

Explanation:

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c) If 21.0 g of potassium reacts with 62.5 g of barium nitride, what mass of potassium nitride will be produced?
MAXImum [283]

Explanation:

21.0 g of potassium reacts with 62.5 g of barium nitride, what mass of potassium nitride will be produced

8 0
3 years ago
Which of the following pairs of elements is most likely to form an ionic compound? (Hint - question 4 tells you what types of el
mamaluj [8]

\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Ionic bonds.

Since Sodium (Na) is a cation and Chlorine (Cl) is a Anion, they both form a Ionic bond called as NaCl (common salt)

So answer is, Na and Cl

3 0
3 years ago
Find ΔHrxn for the following reaction: <br><br> 2PbS(s)+3O2(g)→2PbO(s)+2SO2(g)
ch4aika [34]

Answer:

ΔH°rxn = -827.5 kJ

Explanation:

Let's consider the following balanced equation.

2 PbS(s) + 3 O₂(g) → 2 PbO(s) + 2 SO₂(g)

We can calculate the standard enthalpy of reaction (ΔH°rxn) from the standard enthalpies of formation (ΔH°f) using the following expression.

ΔH°rxn = [2 mol × ΔH°f(PbO(s)) + 2 mol × ΔH°f(SO₂(g) )] - [2 mol × ΔH°f(PbS(s)) + 3 mol × ΔH°f(O₂(g) )]

ΔH°rxn = [2 mol × ΔH°f(PbO(s)) + 2 mol × ΔH°f(SO₂(g) )] - [2 mol × ΔH°f(PbS(s)) + 3 mol × ΔH°f(O₂(g) )]

ΔH°rxn = [2 mol × (-217.32 kJ/mol) + 2 mol × (-296.83)] - [2 mol × (-100.4) + 3 mol × 0 kJ/mol]

ΔH°rxn = -827.5 kJ

5 0
3 years ago
What attracts heat more? black or aluminum foil?​
Inessa05 [86]

Answer:

"<em><u>A</u></em><em><u>L</u></em><em><u>U</u></em><em><u>M</u></em><em><u>I</u></em><em><u>N</u></em><em><u>U</u></em><em><u>M</u></em><em><u> </u></em>FOIL" will conduct heat much more effectively than black construction paper.

8 0
2 years ago
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I will take a picture of the question ​
a_sh-v [17]

Answer:

yes as you wish

Explanation:

but why have u asked this

3 0
3 years ago
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