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
hoa [83]
3 years ago
3

A classmate finds that it takes 1.090 seconds for a tossed ball to touch ground. How many significant figures are in this measur

ement?
Chemistry
2 answers:
prohojiy [21]3 years ago
5 0
There are two significant measures in this and those are 9 and .09
bija089 [108]3 years ago
3 0

Answer: 4

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant. For example: 654, 6.54 and 65.4 all have three significant figures.

All zero’s between integers are always significant. For example: 5005, 5.005 and 50.05 all have four significant figures.

All zero’s preceding the first integers are never significant. For example: 0.0078 has two significant figures.

All zero’s after the decimal point are always significant. For example: 4.500, 45.00 and 450.0 all have four significant figures.

All zeroes used solely for spacing the decimal point are not significant. For example : 8000 has one significant figure.

Thus 1.090 has four significant figures as all the digits are significant.

You might be interested in
You have several crystalline solids in front of you that are different colors(not white) - are they more likely to be ionic or c
Nesterboy [21]
They are more likely to be covalent as covalent compounds usually tend to be radical on the color spectrum with deep purples and blacks and even earwax colored.
3 0
4 years ago
When do replicated chromosomes are aligned in the center
Art [367]

Answer:

<u>During Metaphase</u>

<u></u>

Explanation:

During Metaphase the cell chromosome align themselves in the middle of the cell.This occur due to a cellular process called "Tug of War".

The chromosome which have been replicated and joined at the central point  called centromere are called sister chromatids

Prior to metaphase , Kinetochore type of protein are formed around the centromere. Long protein filament called kinetochore are extended from poles to other end of the cell attached to kinetochore.

Therse is important checkpoint in the middle of mitosis called<u> metaphase.</u>

At this point cell ensure that , it is ready to divide or not.

Once the cell ensure that everything is ready to divide. Only after then , yhe cell enters the fourth phase called <u>anaphase.</u>

7 0
3 years ago
Classify the following reaction:2h2o 2h2 o2
lord [1]
The classified form of the following reaction should looke like that :2 H2O (l) 2 H2(g) + O2(g). WHat about the name of such reaction, I am pretty sure that it is called <span>decomposition. I bet you have the same in the option list, but next time check it carefully.</span>
5 0
3 years ago
Read 2 more answers
1 cg is equal to (2 points) Select one: a. 103 hg. b. 103 g. c. 10-2 mg. d. 10-2 g.
Semmy [17]
The answer should be D) 10-2 g.
3 0
3 years ago
Explain the methods of passive transport that move molecules across the plasma membrane of the cell.
amm1812
I think it will be 4 but I am not sure
5 0
3 years ago
Other questions:
  • True or False questions
    11·1 answer
  • Units accepted according to the international system are called?
    12·2 answers
  • If you burn 59.1 g of hydrogen and produce 528 g of water , how much oxygen is reacted
    8·1 answer
  • PLEASE NEED HELP QUICK DEADLINE SOON
    14·1 answer
  • Using Carbon cycle what carbon trapped in fossil fuels is converted to carbon dioxide
    10·1 answer
  • If the concentration of the HCl used in your titration was 1.00 M and you used 23.68 mL to reach the endpoint, calculate the con
    14·1 answer
  • Q13 Which compound has a boiling point that is influenced by hydrogen bonding?
    8·2 answers
  • What is a neutrons and a proton?
    5·2 answers
  • What's the similarity between Gas and Liquid?
    14·1 answer
  • The type of intermolecular force present in I2, Br2, and Cl2 is:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!