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
loris [4]
3 years ago
6

Perform the following

Chemistry
1 answer:
docker41 [41]3 years ago
3 0

Answer:

8.73

Explanation:

when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!

also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!

You might be interested in
What is the mass of 13 gold atoms?
Ludmilka [50]

Answer:

uuuh 4.25191 × 10-21 grams????

Explanation:

8 0
3 years ago
A mineral is made from what in the ground
IrinaK [193]
<span>Minerals are solid substances that occur naturally. They can be made from a single element (like gold or copper) or from a combination of elements.</span>
3 0
3 years ago
What does surface tension mean?
Volgvan

Surface tension, property of a liquid surface displayed by its acting as if it were a stretched elastic membrane. This phenomenon can be observed in the nearly spherical shape of small drops of liquids and of soap bubbles. Because of this property, certain insects can stand on the surface of water.

7 0
3 years ago
Read 2 more answers
Given similar concentrations, the stronger acid corresponds to the lower pH. Comment on the relative strengths of the acids H3PO
andreyandreev [35.5K]

Answer:

H3PO4 is stronger than H2PO4- because

H3PO4 dissociation constant is 6.9×10^-3

H2PO4^- dissociation constant is 6.2×10^-8

7 0
2 years ago
Which of the following leads to a higher rate of diffusion?
tiny-mole [99]
<h3><u>Answer;</u></h3>

Higher velocity of particles

<h3><u>Explanation;</u></h3>

The diffusion rate is determined by a variety of factors which includes;

  • Temperature such that the higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly and the diffusion rate will be high.
  • Concentration gradient such that the greater the difference in concentration, the quicker the rate of diffusion.
  • Higher velocity of particles increases the diffusion rate as this means more kinetic energy by the particles and hence the particles will mix and move faster, thus higher diffusion rate.
5 0
3 years ago
Other questions:
  • What is the opposite of malleable?<br> A) brittle<br> B) ductile<br> C) insulative<br> D) conductive
    6·1 answer
  • Can someone help me with this question please
    6·1 answer
  • if you were trying to heat soup would you want to use a good thermal conductor or good thermal insulator? explain your answer
    6·2 answers
  • Can you answer this for me
    7·2 answers
  • To convert between moles and molecules, you need to...
    13·1 answer
  • 2 points
    15·1 answer
  • An iron block of mass 18 kg is heated from 285 K to 318 K. If 267.3 kJ is required, what is the specific heat of iron? A. 450.00
    5·1 answer
  • Explain how the effects of nuclear charge and the increasing number of core electrons in an atom oppose each other.
    10·1 answer
  • Lana balanced an equation so that the result was 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr. Which most likely represents the starting e
    12·1 answer
  • If a 12oz can of Soda contains 48.0g of sugar and you drink one can a day for one month (31 days), how many pounds (lb) of sugar
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!