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dmitriy555 [2]
3 years ago
6

Someone please help! Hurry

Chemistry
2 answers:
makkiz [27]3 years ago
4 0
It’s b) Phototropism
Karo-lina-s [1.5K]3 years ago
3 0
I think it’s phototropism
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Once the sun's energy reaches the earth's atmosphere through radiation, it is circulated within the atmosphere and oceans throug
maw [93]
The sun's energy would be circulated through convection. This is because whenever you see the word "circulate", there is a pretty good chance it has something to do with convection. 
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3 years ago
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How many protons z and how many neutrons n are there in a nucleus of the most common isotope of silicon, 2814si?
zheka24 [161]
The 28 is the sum of the protons and neutrons in the element silicon.
ALL silicon atoms have 14 protons in the nucleus, so we can turn this into an equation:
#protons + #neutrons = 28
14 + #neutrons = 28
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7 0
3 years ago
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Metallic copper is formed when aluminum reacts with copper(ii) sulfate. how many grams of metallic copper can be obtained when 5
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Answer is: 127 grams <span>rams of metallic copper can be obtained.
</span>Balanced chemical reaction: 2Al + 3CuSO₄ → Al₂(SO₄)₃ + 3Cu.
m(Al) = 54.0 g.
n(Al) = m(Al) ÷ M(Al).
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n(Al) = 2 mol.
m(CuSO₄) = 319 g.
n(CuSO₄) = 319 g ÷ 159.6 g/mol.
n(CuSO₄) = 2 mol; limiting reactant.
From chemical reaction: n(CuSO₄) : n(Cu) = 3 : 3 (1 : 1).
n(Cu) = 2 mol.
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n(Cu) = 127.1 g.
8 0
3 years ago
Elements whose properties are between those of metals and solid nonmetals are called:
Tom [10]

Answer:

mettaliods

Explanation:

It has the both property of metal and non metal so it is called mettaliod.

4 0
3 years ago
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A classroom has a volume of 278 m3. What is its volume in<br> km3
Tcecarenko [31]
1 m = 0,001 km
1m³ = 0,000000001 km³

278 m³ = 0,000000278 km³ = 2,78×10^(-7) km³

:•)
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3 years ago
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