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alina1380 [7]
4 years ago
12

What is the answer to number 14 ?

Chemistry
1 answer:
Yuri [45]4 years ago
8 0

Answer:

a) 2 significant figures

b) 5 significant figures

c) 5 significant figures

d) 1 significant figures

Explanation:

• <u>All non-zero digits are significant.</u>

E.g. - 421 has 3 significant figures.

• <u>Zeros between non-zero digits are significant.</u>

E.g. - 502 has 3 significant figures.

• <u>In a decimal less than 1, all zeros to the left of non-zero digits are not significant.</u>

E.g. - 0.0345 has 3 significant figures.

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Calculate the mass (in g) of 2.8 X 10^22 H2O molecules.
siniylev [52]

Answer: wait im gonna search some info.

Explanation:I come back with an asnwer for you

6 0
3 years ago
help asap show work | a gas with a volume of 13L at a pressure of 197 kPA is allowed to expand to a volume of 23L. what is the p
Lera25 [3.4K]

Answer:

<h2>111 kPa</h2>

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the new pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

We have

P_2 =  \frac{13 \times 197000}{23}  =  \frac{2561000}{23}  \\  = 111347.826...

We have the final answer as

<h3>111 kPa </h3>

Hope this helps you

5 0
3 years ago
The maximum number of electron that can occupy the third principle energy level is
Lelechka [254]
I believe the answer is 18. 
4 0
3 years ago
Read 2 more answers
When Silver (Ag) forms a metallic bond with other Silver atoms, what do the valence electrons move into? A. the all go to the sa
Korolek [52]

Answer:

D. the sea of electrons

Explanation:

Metallic bonds are defined as the bonds formed between two or more metals. Silver atom form metallic bond with other silver atoms.

In metallic bond, the free electrons or valence electrons present in s and p orbitals delocalize. The valence electrons do not move around the atoms or enter the atoms whereas they form a sea of electrons in which they surround the nuclei (positively charged) of the metal ions interacting. The valence electrons are then freely move in the space between the atomic nuclei.

Hence, the correct answer is "D. the sea of electrons".

7 0
4 years ago
Why 5.67 + 0.00032 = 5.67 (and not 5.7 or 5.67032 or any other number).
vlabodo [156]

The answer must show the lowest number of significant number of significant places in the decimal region

Explanation:

5.67 + 0.00032 adds up to 5.67 because the least number of significant figures in the decimal place 2.

  • To add up two numbers, that are in decimal places.
  • Identify the number of significant figures in them
  • Their addition should sum up to a value no more than the significant figures to the right of the decimal having the lowest accuracy.

           5.67

        + 0.00032

to the right of the decimal, they have two significant numbers.

The answer should also be this way.

learn more:

Significant figures brainly.com/question/6443737

#learnwithBrainly

5 0
3 years ago
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