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
Greeley [361]
2 years ago
12

FREE BRAINLEIAST FOR FIRST GOGOGOGO!!

Chemistry
1 answer:
olga2289 [7]2 years ago
6 0

Answer:

MEMEME

Explanation:

You might be interested in
Caculate the number if moles of the following: 800. g of Ca
Maru [420]
Mole   is  equal  to   mass  of  the  element  divided  by   molar  mass  of  the  element.  that   is
mole=mass/molar  mass
From  periodic  table calcium  has  a   molar  mass  of  40   g/mol
moles  is   therefore  =800g/40g/mol=20moles
3 0
2 years ago
A piece of glass is immersed in a liquid. It proceeds to float on the liquid's surface. This shows that the density of the glass
tamaranim1 [39]

Answer: b) Less dense

Explanation:

Differences in density is one reason objects float or sink.

An object more dense than the fluid in which it is immersed will sink, while objects less dense than the fluid in which it is immersed will float to the surface.

But objects floats at constant level if the density is equal to the density of the fluid in which it is immersed; it neither rises nor sinks in the fluid in this case.

7 0
3 years ago
Which of the following statements about gamma rays are TRUE? I. Gamma rays have low energy II. Gamma rays are a form of light. I
OverLord2011 [107]

Answer:

the third one

Explanation:

6 0
3 years ago
Read 2 more answers
What is the weight of a 90kg man standing on the moon, where gmoon = 1.64 m/s2?
Doss [256]

Answer:

The weigth of a 90kg man standing on the moon is <u><em>147.6 N (option C)</em></u>

Explanation:

Weight is called the action exerted by the force of gravity on the body.

The mass (amount of matter that a body contains) of an object will always be the same, regardless of where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

The formula that allows you to calculate the weight of any body is:

W = m*g

where:

  • W = weight measured in N.
  • m = mass measured in kg.
  • g = acceleration of gravity measured in m/s². The acceleration of gravity g is the same for all objects that fall due to gravitational attraction, whatever their size or composition. For example, as an approximate value on Earth, g = 9.8 m/s².

In this case,  the mass m has a value of 90 kg and the gravity g has a value of 1.64 m/s², which is the value of the acceleration of gravity of the moon. Then:

W=90 kg* 1.64 m/s²

<u><em>W= 147.6 N</em></u>

Finally, <u><em>the weigth of a 90kg man standing on the moon is 147.6 N (option C)</em></u>

3 0
3 years ago
7. Wind, moving water, falling rocks, and roller-skating children are all examples of -​
cluponka [151]

Answer:

kinetic energy

the is because all of them are moving at once

5 0
2 years ago
Other questions:
  • What volume (in milliliters) of oxygen gas is required to react with 4.03 g of Mg at STP
    15·2 answers
  • A student says: Potassium (K) always has 20 protons. Explain why the student is incorrect.
    15·1 answer
  • A gas occupies 100 mL at 150. kPa. Find its volume at 200. kPa. You must show all your work to receive credit. Be sure to identi
    15·1 answer
  • The isotopes K-37 and K-42 have the same
    6·2 answers
  • What is the flow of science ?
    9·1 answer
  • What is the percent by mass in a solution with 10.0 grams of solute and 25.0 grams of solvent?
    5·1 answer
  • Due to changes in the environment, having lighter-colored fur becomes a
    5·1 answer
  • \ helppppp
    14·2 answers
  • Why does it matter if atoms are divisible ???
    10·1 answer
  • What information does the atominic numer give you about an element
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!