1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
qaws [65]
3 years ago
12

A pound is approximately 0.45 kilogram. A person weighs 87 kilograms. What is the person’s weight, in pounds, when expressed to

the correct number of significant figures?
A. 190 lb
B. 180 lb
C. 52 lb
D. 39 lb

Chemistry
2 answers:
Vinvika [58]3 years ago
6 0

Answer:

190 pounds  

Explanation:

Given that  

A pound is approximately 0.45 kilogram

A person weighs 87 kilograms

Now change the unit form kilogram to pounds as follows:

 

1 pound / 0.45 kilogram * 87 kilograms

= 193.3 pounds

Now expressed to the correct number of significant figures

193.3 pound = 190 pounds  

Sauron [17]3 years ago
4 0

Answer:

87 kilograms =191.8 pounds

You might be interested in
__C2H4+__O2-->__CO2+__H2O
mihalych1998 [28]

Answer:

Here is your answer mate :D

3 0
3 years ago
Polymer formed from methylene diphenyl isocyanate
marin [14]

Answer:

Polymeric MDI is a mixture of. monomeric MDI as well as larger molecular weight oligomers of MDI, and is a brownish. liquid at room temperature and may have a slight odor. Commercial MDI products are. often mixtures of monomeric and polymeric MDI and can contain other additives as well.

Explanation:

5 0
3 years ago
A roller coaster is accelerating at 10m/s² before it comes to an abrupt stop at the end of the ride. The mass of the roller coas
alexgriva [62]

Answer:

<h2>9000 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 900 × 10

We have the final answer as

<h3>9000 N</h3>

Hope this helps you

8 0
3 years ago
What happens when magnesium reacts with iodine to make magnesium iodide?
I am Lyosha [343]

Explanation:

Atomic number of magnesium is 12 and its electronic distribution is 2, 8, 2. On the other hand, atomic number of iodine is 53 and its electronic configuration is [Kr]4d^{10}5s^{2}5p^{5}.

Hence, there are 7 valence electrons in an iodine atom and there are 2 valence electrons in a magnesium atom.

So, one atom of iodine requires one electron from a donor atom to complete its octet. But one magnesium atom contains two valence electrons.

Therefore, one magnesium atom will combine with two iodine atoms to result in the formation of magnesium iodide as follows.  

            Mg^{2+} + 2I^{-} \rightarrow MgI_{2}

Therefore, an ionic bond will be formed when  magnesium reacts with iodine to make magnesium iodide.

7 0
3 years ago
Which statement describes solctices
Firlakuza [10]

Answer:funk

hot dog cat

Explanation:

uhughuhuhuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the most useful tool used by chemist?
    8·1 answer
  • Provide an explanation that is grounded in polarity that better explains why oil is not miscible in vinegar.
    10·1 answer
  • How could you separate a mixture of rocks and sand
    13·1 answer
  • Which of the following helps reduce the flow of thermal energy from within your house to the outside?
    9·1 answer
  • Can someone tell me how to identify the number of significant figures?
    11·1 answer
  • What is the most abundant element on Earth?
    8·1 answer
  • In sublimation which state of matter is absent
    6·2 answers
  • Balance the following:<br> CsH12 +<br> 02<br> CO2+<br> |<br> H20
    9·1 answer
  • Thực trạng tồn dư nitrat trên rau và an toàn thực phẩm
    12·1 answer
  • What is a liquid mixture whose parts are evenly blended?.​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!