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stich3 [128]
3 years ago
6

How many moles of hydrogen are in a 14 gram sample of propane gas?

Chemistry
1 answer:
blagie [28]3 years ago
6 0
Given the following balanced equation , if 5.00 moles of hydrogen gas and 5.00 miles

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PO3−4 what's the formula name?
masha68 [24]

Answer:

Phosphate ion

Explanation:

4 0
3 years ago
Use the molar bond enthalpy data in the table to estimate the value of Δ∘rxn
MakcuM [25]

Answer:

ΔH°rxn = - 433.1 KJ/mol

Explanation:

  • CH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)

⇒ ΔH°rxn = 4ΔH°HCl(g) + ΔH°CCl4(g) - 4ΔH°Cl2(g) - ΔH°CH4(g)

∴ ΔH°Cl2(g) = 0 KJ/mol.....pure element in its reference state

∴ ΔH°CCl4(g) = - 138.7 KJ/mol

∴ ΔH°HCl(g) = - 92.3 KJ/mol

∴ ΔH°CH4(g) = - 74.8 KJ/mol

⇒ ΔH°rxn = 4(- 92.3 KJ/mol) + (- 138.7 KJ/mol) - 4(0 KJ/mol) - (- 74.8 KJ/mol)

⇒  ΔH°rxn = - 369.2 KJ/mol - 138.7 KJ/mol - 0 KJ/mol + 74.8 KJ/mol

⇒ ΔH°rxn = - 433.1 KJ/mol

4 0
3 years ago
Read 2 more answers
3) A standard mass of 250.0 g was placed on a balance. The balance said it had a mass of 243.9
Roman55 [17]

Answer:

20

Explanation:

8 0
3 years ago
Plz help me asap i need this plz
Arturiano [62]
I think it’s because from earth things may appear smaller smaller in space where in actuality in space it can be way larger
6 0
3 years ago
Summarize the Natural Processes of weathering ,erosion, and deposition
Lena [83]

Answer:

I won’t do it in paragraph form cuz it will look very choppy but here you go:

Weathering is when the weather itself changes something, like when a metal bike gets rusty after sitting outside for a long time, or when a plant grows out of concrete.

Erosion is when something gets eroded away at. Like when something has water or wind is flowing against it so much that it changes shape. This is how canyons are made.

Deposition is when a gas turns into a solid, removing energy and skipping the liquid step (frost forming on car window)

7 0
3 years ago
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