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
gizmo_the_mogwai [7]
3 years ago
12

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as wel

l. Which of the following formulas can be used to calculate the volume of the ball?
Group of answer choices

V equals four-thirds times pi times r cubed

V equals one-third times pi times r squared times h

V = s3

V = πr2h
Chemistry
1 answer:
murzikaleks [220]3 years ago
7 0

Answer:

V equals four-thirds times pi times r cubed

Explanation:

Volume = a³ , where a is length of each side. Volume = l × w × h , where l is length, w is width and h is height. Volume = 4/3 πr³ , where r is the radius. Volume = πr²h , where r is the radius and h is the height.

You might be interested in
Given the balanced equation representing a reaction: 2h2o(l) + 571.6 kJ -> 2h2(g) + o2(g). What occurred as a result of this
Ivan

Answer: option D) energy was absorbed and entropy increased.


Explanation:


1) Given balanced equation:


2H₂O (l) + 571.6 kJ → 2 H₂ (g) + O₂(g).


2) Being the energy placed on the side of the reactants means that the energy is used (consumed or absorbed). This is an endothermic reaction.


So, the first part is that energy was absorbed.


3) As for the entropy, it is a measure of the disorder or radomness of the system.


Since, two molecules of liquid water were transformed into three molecules of gas, i.e. more molecules and more kinetic energy, therefore the new state has a greater degree of radomness, is more disordered, and you conclude that the entropy increased.


With that, you have shown that the right option is D) energy was absorbed and increased.

7 0
3 years ago
The Moon is smaller than Earth. Why does the Moon have less gravity than Earth?
ipn [44]
C is the answer the moon has less mass than earth
3 0
3 years ago
When it’s summer in the northern hemisphere what Season is it in the Southern Hemisphere
Greeley [361]

Answer:

Winter

Explanation:

I dont know but whatev

4 0
2 years ago
Read 2 more answers
What biological processes can add co2 to the atmosphere?
RSB [31]
Cellar respiration simple if u need explanation just search up
6 0
3 years ago
2c2h6 + 7o2 = 4co2 + 6h2o <br> what mass of co2 will be produced from the reaction of 37.5 g c2h6
ivanzaharov [21]

Answer:

use n=m/M (moles=mass/molar mass) to find out how many moles of C2H6 there are in 60g

Explanation:

8 0
3 years ago
Other questions:
  • Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactan
    9·2 answers
  • What process releases gas in the hydrosphere.
    6·1 answer
  • 20950 joules of heat are added to a container with 400 g of water. how much does the temperature change??? Show work and formula
    10·1 answer
  • Most organic acids can be represented as RCOOH, in which COOH is the carboxyl group and R is the rest of the molecule. (For exam
    15·1 answer
  • Do electromagnets or mechanical waves move faster
    5·2 answers
  • Describe the transfer of thermal energy as the ice cream melts and as it becomes solid again. In both situations, describe which
    6·1 answer
  • Given the reaction: N2 + O2 = 2NO for which the Keq at 2273 K is 1.2 x 10-4
    5·1 answer
  • If a material conducts heat easily, its a good _____. <br> It has to be a 18 letter word
    8·1 answer
  • How do trenches form? say it with your own words
    6·2 answers
  • Geologists use the law of to determine the superposition relative ages of sedimentary rock layers
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!