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
jeka57 [31]
3 years ago
7

3) A standard mass of 250.0 g was placed on a balance. The balance said it had a mass of 243.9

Chemistry
1 answer:
Roman55 [17]3 years ago
8 0

Answer:

20

Explanation:

You might be interested in
A biochemist would most likely study what ?
Molodets [167]

Answer:

Biochemists study chemical processes and chemical transformations in living organisms. Biochemists study DNA, proteins and cell parts. The word "biochemist" is a portmanteau of "biological chemist."

Explanation:

6 0
3 years ago
How does the hydrosphere lithosphere atmosphere and biosphere work
umka21 [38]
They are all layers of the atmosphere that exist as separate layers but cooperate with each other. The hydrpsphere is the water part of the atmosphere such as oceans, sea, and lake's. The lithosphere is the under earth action that is happening where such things as faults, and volcanoes occur. The biosphere is where all life exist such as me, you, and animals.
4 0
3 years ago
A substance is found to consist of 1.900g of silver, 0.250g of nitrogen, and 0.850g of oxygen. what is the percent by mass of ox
Galina-37 [17]
The  percentage  by mass  of  oxygen  in  the  compound

find  the total  mass=(  1.900+  0250 +0.850) =  3
the  percentage  mass  mass of  oxgyen/total  mass  x100

that  is  (0.850/3)  x100=28.33%
7 0
3 years ago
Which transformation represents light energy transforming into chemical energy?
ZanzabumX [31]
I think the best answer is C. Since the light energy would be the sun and chemical energy being the glucose that feeds the plant.
4 0
3 years ago
Iodine chloride, ICl, can be made by the following reaction between iodine, I2, potassium iodate, KIO3, and hydrochloric acid.
Vadim26 [7]
The balanced chemical reaction is:

<span>2 I2 + KIO3 + 6 HCl ---------> 5 ICl + KCl + 3 H2O 
</span>
We are given the amount of the product to be produced from the reaction. This will be the starting point of our calculations.

28.6 g ICl (1 mol / 162.35 g ICl ) ( 2 mol I2 / 5 mol ICl ) ( 253.81 g I2 / 1 mol I2 ) = 17.88 g I2
6 0
4 years ago
Read 2 more answers
Other questions:
  • A 9.780 -g gaseous mixture contains ethane (C2H6) and propane (C3H8). Complete combustion to form carbon dioxide and water requi
    8·1 answer
  • What is it called when a rock is rusting
    8·1 answer
  • Help plz need answers asap
    9·2 answers
  • Please help will mark Brainly!!
    14·1 answer
  • Copper atoms are oxidised at the positive electrode to Cu2+ ions, as shown in the half equation.
    6·1 answer
  • What are some of the structures inside a cell that help it to live and perform its role in an organism.
    15·1 answer
  • Velocity may be expressed in which I f the following units?
    9·1 answer
  • Asap help <br> It's very important
    10·2 answers
  • Which 2 characteristics must and object have in order to be considered matter?
    6·1 answer
  • A sample of ammonia has a mass of 45.5g. how many molecules are in this sample​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!