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cluponka [151]
3 years ago
9

The cells of plants and algae have a hard made of cellulose

Chemistry
1 answer:
Monica [59]3 years ago
8 0
The answer is cell wall...i found it here: https://www.quia.com/jg/1351880list.html
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What is the specific latent heat of fusion for a substance that takes 550 kJ to melt 14 kg at 262 K?
Ray Of Light [21]

Answer:

The answer is A

Explanation:

hope it helps

3 0
3 years ago
Nuclear power plants use a fission reaction of uranium to generate heat to power a generator. A fission reaction is a chain reac
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B.

Explanation : it’s B because the control rods used are usually made of boron which boron is a non fissile material hence won’t undergo fission when bombarded or collided with neutrons.
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1 year ago
I need some information about greenhouse effect, please. Could you help me?
LenKa [72]

Answer: green house affect is the sun on plants it is transfering energy to the plants to help them grow same with every plant, tree, fruit tree. everything needs sun.

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4 0
3 years ago
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What generates electricity
Hunter-Best [27]

Answer:

Electricity is most often generated at a power plant by electromechanical generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power.

Explanation:

7 0
3 years ago
245 g water sample initially at at 32 oC absorbs 17 kcal of heat. What is the final temperature of water?
steposvetlana [31]

Answer:62.66°C or 235.66K

Explanation:Q=McpT, the energy was given in calories so you first convert to Joules by multiplying the value in calories by 4.184J.

17*4.184=71.128kJ.

71.128kJ=mcpT

71.128kJ=245*4.187*(T-Tm)

Tm is the final temperature of the mixture. The T is the temperature given which should be converted to Kelvin by adding 273...T=32+273=305K.

71128J=245*4.187*(305-Tm)

71128=312873.575-1025.815Tm

1025.815Tm=312873.575-71128

1025.815Tm=241745.58

Tm=241745.58/1025.815

Tm=235.66K

4 0
3 years ago
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