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ruslelena [56]
3 years ago
12

The jovian planets contain large abundances of hydrogen and helium because

Chemistry
1 answer:
monitta3 years ago
7 0
The larger elements are stratified at the core of the Jovian planet. The gravitational force is so large that part of the core consists of liquid hydrogen. That which cannot be captured by the core is in the upper regions in gaseous form. 

Helium is one of the noble gases (the lightest one) and has an extremely low melting point. It addition it will combine with absolutely nothing that I know of. So helium has found itself in the upper regions of the planet as well.
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3 years ago
A chemist weighed out 70.8 g of magnesium. Calculate the number of moles of magnesium she weighed out. Round your answer to sign
solniwko [45]

Answer:

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Explanation:

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Calculate the energy required to heat 322.0g of ethanol from −2.2°C to 19.6°C . Assume the specific heat capacity of ethanol und
just olya [345]

Answer:

There is 17.1 kJ energy required

Explanation:

Step 1: Data given

Mass of ethanol = 322.0 grams

Initial temperature = -2.2 °C = 273.15 -2.2 = 270.95K

Final temperature = 19.6 °C = 273.15 + 19.6 = 292.75 K

Specific heat capacity = 2.44 J/g*K

Step 2: Calculate energy

Q = m*c*ΔT

⇒ m = the mass of ethanol= 322 grams

⇒ c = the specific heat capacity of ethanol = 2.44 J/g*K

⇒ ΔT = T2 - T1 = 292.75 - 270.95 = 21.8 K

Q = 322 * 2.44 * 21.8 = 17127.8 J = 17.1 kJ

There is 17.1 kJ energy required

3 0
3 years ago
What are two things in nature that solar energy powers?
adell [148]

Answer: light and heat

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Examples of noble gases
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Natural gas, desolate
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