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Mars2501 [29]
4 years ago
11

Why are mercury thermometers rarely used in the laboratory?

Chemistry
2 answers:
ozzi4 years ago
8 0
Because it is one of the strongest chemicals and it is very dangerous.
defon4 years ago
6 0
They are rarely used because they pose a danger hazard when they are broken. Mercury is highly toxic
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Since a parallelogram is defined as a quadrilateral with two pairs of parallel sides, Emily drew in a diagonal of a parallelogra
koban [17]

Explanation:

In the attachment fig ABCD is a parallelogram with AC as diagonal.

we know that,

In  a parallelogram opposite sides are equal and parallel

In a parallelogram sum of adjacent angles is 180°

that is

∠A+∠D= ∠B+∠C= 180°

Also, in  a parallelogram opposite angles are equal.

So in ΔADC and ΔABC

1) AD=BC

2) DC= AB

And

3) ∠ADC= ∠ABC

therefore, ΔADC and ΔABC are congruent to each other and Emily was right.

6 0
3 years ago
Which of the following particle diagrams represents a mixture?
QveST [7]

Answer:

???

Explanation:

i would help answer but your post has no diagrams or at least there not showing up

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3 years ago
A 55.0g sample of iron (III) filings is reacted with 23.8g of powdered sulfur (S8). How much iron (III) sulfide in moles would b
Margaret [11]

Answer:

0.744 mol

Explanation:

the balanced equation for the reaction is

8Fe + S₈ ---> 8FeS

molar ratio of Fe to S₈ is 8:1

number of moles of Fe - 55.0 g / 56 g/mol = 0.98 mol

number of moles of S - 23.8 g / 256 g/mol = 0.093 mol

if we are to assume that S₈ is the limiting reactant

if 1 mol of S₈ reacts with 8 mol of Fe

then 0.093 mol of S₈ reacts with - 8 x 0.093 mol = 0.744 mol of Fe

however there's 0.98 mol of Fe present but only 0.744 mol of Fe is needed

therefore Fe is in excess and S₈ is the limiting reagent

molar ratio of S₈ to FeS is 1:8

then 0.093 mol of S₈ reacts with - 8 x 0.093 = 0.744 mol of FeS

number of FeS moles produced is 0.744 mol

8 0
3 years ago
Read 2 more answers
What is special about nitrogen , and what is its main function in the atmosphere
blagie [28]
Nitrogen makes about 78% of the air we breathe. Nitrogen is extremely important in living things. <span>It forms the building blocks of proteins. We need proteins because they make up our skin and hair. Proteins also help us digest food. We get our nitrogen from plants, and plants get it from bacteria in the soil. Our atmosphere provides life with the nitrogen it needs.</span>
5 0
4 years ago
I Jakayla, a 17 year old student at Frazier High School attends a post-graduation party and consumes 3
ohaa [14]

Answer:

First of all, why are you leaving your house during quarintine. Second of all, its illegal to drink under age.

Explanation:

3 0
3 years ago
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