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
gavmur [86]
2 years ago
13

add or subtract the following measurements. be sure each answer you enter contains the correct number of significant digits. −4.

520g1.3g
Chemistry
1 answer:
OLga [1]2 years ago
6 0

the correct number of significant digits

addition= -3.220g = 4 significant digits.

subtract= -5.820g = 4 significant digits

<h3>How are significant digits determined?</h3>
  • Use the following three rules to determine how many significant figures are present in a number:
  • Digits that are not zero are always important. Any zeros in the range of two significant digits are noteworthy.
  • ONLY in the decimal section are a final zero or following zeros important.
<h3>What are examples of significant digits?</h3>
  • Any two non-zero digits that are separated by a zero are important. For instance, the number 108.0097 has seven significant digits.
  • Every zero that is both to the right and left of a non-zero digit and the decimal point is never meaningful.
  • For instance, the number 0.00798 had three significant digits.

learn more about significant digits here

brainly.com/question/24491627

#SPJ4

You might be interested in
The crust and upper mantle make up Earth's ____.
Alekssandra [29.7K]

Answer:

a. the lithosphere

Explanation:

google

7 0
2 years ago
How do the chemical properties of the halegons compare to those of the noble gases
saul85 [17]

Answer:

The halogens are extremely reactive, whilst the noble gases are mainly inert.

Only some noble gases tend to form compounds, such as xenon and krypton. However, some like helium, almost have no compounds at all. Noble gases also have octet rule shells, which causes the little reactivity associated with them. To form bonds with noble gases, a lot of energy is required to form those bonds. Halogens, on the other hand, are extremely reactive. Compounds like chlorine and fluorine must be stored carefully, as they will oxidise anything that they can find, just to get one extra electron to get an octet configuration.


Hope this helps :)

6 0
3 years ago
Read 2 more answers
Of the molecules below, only ________ is polar.a. SiCl4 b. CH4 c. CCl4 d. SeF4
ludmilkaskok [199]

Answer:

SeF4 is a polar molecule

Explanation:

SeF4 is a polar molecule because a polar molecule is any molecule that have lone pairs of electrons in the central atom or have atoms that are electronegative and the electrons between that are covalently bonded are not evenly distributed.

The electronegative atoms of flourine in SeF4 are not evenly distributed and kind pairs of electrons are on the central atom.

6 0
3 years ago
What are the examples of physical chemistry?
OverLord2011 [107]

ANSWER:

Physical chemistry is the branch of chemistry that deals with the physical structure of chemical compounds, the way they react with other matter and the bonds that hold their atoms together. An example of physical chemistry is nitric acid eating through wood.

3 0
2 years ago
What is the relationship between the location of volcanoes and earthquakes?
alexandr1967 [171]

Answer:

i think it is A

Explanation:

because earthquakes can cause volcanoes

8 0
3 years ago
Read 2 more answers
Other questions:
  • How many grams of a 31.6% potassium sulfate solution would contain 617 g potassium sulfate?
    13·1 answer
  • What causes the jet stream to move farther south?
    15·1 answer
  • In the PhET activity, “Properties of Gases”, when volume is kept the same, as the temperature is increased
    7·1 answer
  • - A 300g sample of CaCO3 was heated until 10 L of CO2 was collected
    7·1 answer
  • From a cross between a short-haired guinea pig (hh) and a long-haired guinea pig (Hh), what would be the possible phenotypes of
    11·1 answer
  • ANSWER THIS QUESTION<br><br><br><br><br><br><br><br><br><br> :)))
    5·1 answer
  • PLEASE HELP
    5·1 answer
  • Given 6.25 mol H2O, determine the number of molecules
    9·1 answer
  • Americans drink 5,604,000 gallons of sweet tea each day. How many liters is
    12·1 answer
  • Why are saturated solutions not stable?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!