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Alborosie
3 years ago
11

What is a hygrometer?

Chemistry
1 answer:
Archy [21]3 years ago
3 0
A hygrometer is an instrument for measuring the humidity of the air or a gas .
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How many significant figures the measurement have 56.0g 0.0004m 1003ml 0.0350s
Setler [38]
In order to do this, we have to first know the significant figure rules.
<span>Rule #1: All non-zero digits are significant. (1234)
 Rule #2: Zeros in front of a number are not significant. (0.093)
 Rule #3: Zeros between non-zero digits are significant. (78309)
 Rule #4: Zeros at the end of a number are significant if there is a decimal point in the number. (0.05470)

So by going by the rules, 56.0g has three sig figs, because there is a decimal point.
0.0004m only has one sig fig, according to Rule #2.
1003ml has 4 sig figs, because the zeroes are wedged in the two sig fig numbers.
And lastly, 0.0350s has 3 sig figs because the number after a decimal point counts.

</span>
7 0
3 years ago
PLEASE HELP OR EXPLAIN!!
Naddik [55]
The third one beacuse if you count all the atoms of every one you will find that one the left side, you have 3 h and on the right you have 2 h
7 0
3 years ago
Use the Periodic Table to determine the shape of the molecule represented by the following formulas.
neonofarm [45]

Answer:

the answer is tetahedal and the next one is trigonal pyramidal

Explanation:

3 0
3 years ago
Between magnesium and calcium, which has the highest ionization energy, and why?
quester [9]

Answer:

magnesium

Explanation:

magnesium has fewer valence shells meaning that the protons have a stronger hold on the electrons and it would take more energy to remove an electron to create an ion.

3 0
3 years ago
Please answer this question!
Hunter-Best [27]

1,2-dimbromopropane would be something like C which is the second best answer.

B would be correct if it had another carbon.

A is like C but incorrect for the same reason. 1,2-dibromoethane is what A is.

The answer has to be D where the bromines are right across from each other.

3 0
3 years ago
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