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3 years ago

Help will give brainliest!

Chemistry

1 answer:

ASHA 777 [7]3 years ago

4 0

Answer:

large crystals

coarse texture

evidence of slow cooling

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How many moles of CO2 are produced when 3.3 moles of C2H2 react

xxTIMURxx [149]

To solve this exercise you need to know that to create CO₂ with C₂H₂ is necessary to have oxygen. So, the following balanced equation represents the reaction:
2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g)

Notice that 2 moles of C₂H₂ form 4 moles of CO₂, so if 3.3 moles of C₂H₂ react, how many moles of CO2 would be produced?
2 moles of C₂H₂ -------4 moles of CO₂
3.3 moles of C₂H₂--------x moles of CO₂
x=6.6 moles of CO₂ produced.

5 0

4 years ago

(there are 3 quetions) how is heat being transfered in:

myrzilka [38]

Answer:

Since I already answered the first two I will tell you the third one!

In general, the radiation heat transfer from one surface to another is the radiation leaving the first surface for the other minus that arriving from the second surface. Radiation heat transfer is mediated by electromagnetic radiation, known as thermal radiation, that arises due to the temperature of a body.

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8 0

3 years ago

Read 2 more answers

What best describes the bonding in a carbon dioxide molecule?

gogolik [260]

Answer:

B. Carbon shares 2 pair of electrons with each oxygen.

Explanation:

Carbon dioxide is formed from combustion reactions, which involves a reaction between carbon and oxygen gas.

Carbon dioxide molecule is formed from one carbon atom and two oxygens. As an element, carbon only has 4 outer shell electrons and oxygen 6.

The two atoms require to gain electrons to achieve a stable configuration; carbon require to gain four electrons and oxygen requires two electrons.

Double covalent bonds form between the atoms, where two electrons from each atom are shared making 4 bonding electrons in total.

Hope it helped!

6 0

3 years ago

Can someone help me with 6 & 7 ?

grin007 [14]

6. V = IR= 1.2×100= 120 V

i tried my best, hope it helps!

5 0

3 years ago

Iodine pentafluoride gas reacts with iodine fluoride gas producing iodine heptafluoride gas and iodine gas. What is the maximum

dybincka [34]

Answer:

63.45g of I₂ can be produced

Explanation:

IF₅ reacts with IF to produce IF₇ and I₂. The reaction is:

IF₅ + 2 IF → IF₇ + I₂

Moles of 10.0g of IF₅ (221.89g/mol):

10.0g IF₅ × (1mol / 221.89g) = 0.0451 moles of IF₅

Using PV / RT = n, it is possible to find moles of 11.20L of IF, thus:

1atm×11.20L / 0.082atmL/molK × 273K = 0.500 moles of IF.

At STP, pressure is 1atm, temperature is 273K and gas constant R is 0.082atmL/molK

For a complete reaction of IF₅ you need:

0.0451 moles of IF₅ × (2 moles IF / 1 mole IF₅) = 0.902 moles of IF. As you have just 0.500 moles of IF, the IF is the limiting reactant.

2 moles of IF produce 1 mole of I₂. 0.500 moles of IF produce:

0.500mol IF ₓ ( 1 mol I₂ / 2 mol IF) = 0.250 mol I₂

As molar mass of I₂ is 253.81g/mol, mass of 0.250 mol I₂ are:

0.250mol I₂ ₓ (253.81g / mol) =

<h3>63.45g of I₂ can be produced</h3>

3 0

4 years ago