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lidiya [134]
3 years ago
7

What does subducted mean

Chemistry
2 answers:
alisha [4.7K]3 years ago
7 0
It is a process that happens at a convergent boundary, where one land plane is forced under the other.
vovikov84 [41]3 years ago
4 0
The sideways and downward movement of the edge of a plate of the earths crust into the mantle beneath another plate
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Why is using only clean glassware important?
stealth61 [152]

Good laboratory technique demands clean glassware because the most carefully executed piece of work may give an erroneous result if dirty glassware is used. In all instances, glassware must be physically and chemically clean and in many cases, it must be bacteriologic-ally clean or sterile.

6 0
2 years ago
Read 2 more answers
Calculate the molecular weight of a substance. In which the solution of this substance in the water has a concentration of 7 per
Eduardwww [97]

Answer : The molecular weight of a substance is 157.3 g/mol

Explanation :

As we are given that 7 % by weight that means 7 grams of solute present in 100 grams of solution.

Mass of solute = 7 g

Mass of solution = 100 g

Mass of solvent = 100 - 7 = 93 g

Formula used :  

\Delta T_f=i\times K_f\times m\\\\T_f^o-T_f=k_f\times\frac{\text{Mass of substance(solute)}\times 1000}{\text{Molar mass of substance(solute)}\times \text{Mass of water(solvent)}}

where,

\Delta T_f = change in freezing point

T_f^o = temperature of pure water = 0^oC

T_f = temperature of solution = -0.89^oC

K_f = freezing point constant of water = 1.86^oC/m

m = molality

Now put all the given values in this formula, we get

(0-(-0.89))^oC=1.86^oC/m\times \frac{7g\times 1000}{\text{Molar mass of substance(solute)}\times 93g}

\text{Molar mass of substance(solute)}=157.3g/mol

Therefore, the molecular weight of a substance is 157.3 g/mol

7 0
3 years ago
Which is the correct definition of density
xxTIMURxx [149]
The correct definition of density is the degree of compactness of a substance.
3 0
3 years ago
Giving brainly if correct​
mel-nik [20]

Answer:

The corect answer would be C.

Explanation:

The flow rate set at a differentt time would be the correct measurement beecause wats and speed add up to your main answer.

3 0
2 years ago
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A science teacher showed the class how potassium chromate changes color when it’s temperature change . Which of the following st
GarryVolchara [31]

Answer:

its b

Explanation:

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2 years ago
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