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laila [671]
3 years ago
5

What are the different mode of heat transfer?

Chemistry
1 answer:
pentagon [3]3 years ago
5 0
Modes*
Conduction, convection, radiation (and advection) 
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What conditions favor the formation of ionic compounds from elements? both atoms must be non metals. you must have a metal and a
astraxan [27]
You must have a metal and a non-metal
6 0
4 years ago
5. Hydrogen & oxygen react chemically to form water. How much water
stepladder [879]

39.25 g of water (H₂O)

Explanation:

We have the following chemical reaction:

2 H₂ + O₂ → 2 H₂O

Now we calculate the number of moles of each reactant:

number of moles = mass / molar weight

number of moles of H₂ = 14.8 / 2 = 7.4 moles

number of moles of O₂ = 34.8 / 32 = 1.09 moles

We see from the chemical reaction that 2 moles of H₂ will react with 1 mole of O₂ so 7.4 moles of H₂ will react with 3.7 moles of O₂ but we only have 1.09 moles of O₂ available. The O₂ will be the limiting reactant. Knowing this we devise the following reasoning:

if        1 moles of O₂ produces 2 moles of H₂O

then  1.09 moles of O₂ produces X moles of H₂O

X = (1.09 × 2) / 1 = 2.18 moles of H₂O

mass = number of moles × molar weight

mass of H₂O = 2.18 × 18 = 39.25 g

Learn more about:

limiting reactant

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6 0
3 years ago
Can car oil degrade carbon fiber?​
KonstantinChe [14]
Yes, car oil can degrade carbon fiber
4 0
3 years ago
Provide three ways that humans have had a impact on the greenhouse effect on Earth?
galina1969 [7]

Burning of fossil fuels, increase use of vehicles and use of household appliances like refrigerator are the three ways humans have had an impact on the greenhouse effect on Earth

<u> Explanation:</u>

  • Burning of fossil fuels for industrial purpose cause the emission of greenhouse gases such as Chlorofluorocarbons (CFCs), Carbon dioxide, methane and nitrous oxide.
  • The smoke comes from the vehicles contain carbon dioxide which increases the number of greenhouse gases in the atmosphere .
  • Use of household appliances will also lead to the emission of greenhouses gases mainly, CFCs (Chlorofluorocarbons) .
  • Increase in the number of greenhouse gases in the atmosphere will lead to climate change.

8 0
4 years ago
Atmospheric pressure yesterday was given as 0.875 atm. Express this pressure in units of torr and also in kilopascals (kPa), res
Aneli [31]
This problem is about conversion and dimensional analysis. Important information to know:
 1 atm = 760 torr = 101.325 kPa

For atm to torr conversion:

0.875 atm * (760 torr / 1 atm) = 665 torr

For atm to kPa conversion:

0.875 atm * (101.325 kPa / atm) = 88.7 kPa

Thus the answer is b) 665 torr and 88.7 kPa
5 0
3 years ago
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