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
victus00 [196]
3 years ago
14

A test tube containing CaCO₃ is heated until the entire compound decomposes. If the test tube plus calcium carbonate originally

weighed 30.08 grams and the loss of mass during the experiment was 4.40 grams, what was the approximate mass of the empty test tube?
A. 20.08 g
B. 21.00 g
C. 24.50 g
D. 25.08 g
E. 25.68 g
Can anyone explain this one for me?
Chemistry
1 answer:
Marysya12 [62]3 years ago
8 0
Find the molar mass of CaCO3 then subtract the molar mass what it originally weighed and the loss of mass. Hopefully this works!
You might be interested in
When electrons gain energy, what can they do?
beks73 [17]

B. When electrons gain energy, they have the power to move up to a higher energy level in an atom.

3 0
4 years ago
38) Which of the following is not a reaction of alcohol
mylen [45]
<h2>I guess...</h2>

<h3>Dehydration </h3>
8 0
3 years ago
How many particles of Na are there in 1.43g of a molecular compound with a Molar mass of 23g?
Olin [163]

Answer:

3.74 x 10²² particles

Explanation:

Given parameters:

Mass of compound  = 1.43g

Molar mass of compound  = 23g

Unknown:

Number of particles of sodium = ?

Solution:

To find the number of particles of Na in the compound, we need to obtain the mass of sodium from the total mass given;

          Mass of sodium  = \frac{molar mass of Na}{molar mass of compound} x mass of sample

                                      = \frac{23}{23}  x 1.43g

                                       = 1.43g

Now find the number of moles of this amount of Na in the sample;

          Number of moles  = \frac{mass}{molar mass} = \frac{1.43}{23}  = 0.062mole

Now;

                    1 mole of substance  = 6.02 x 10²³ particles

                       0.062 mole of substance  =  0.062 x 6.02 x 10²³ particles

                                                                     = 3.74 x 10²² particles

7 0
3 years ago
Which type of circuit can have many loops for resistors (light bulbs) to attach to?
Maslowich
A circuit with many paths for the current to travel through and not simply one is classified as a parallel circuit. Here the circuit can have many loops of resistors or light bulbs that can be attached.
3 0
4 years ago
Sodium(na) is a highly reactive metal and chlorine is a poisonous gas. Which compound do they form when they chemically combine?
Nastasia [14]
It would form into NaCl because Na has a +1 charge while Cl has a -1 charge.
7 0
4 years ago
Read 2 more answers
Other questions:
  • For light with a wavelength of 12.5 nm, determine the energy of light in kJ/mol
    10·1 answer
  • A ball has a volume of 6.35 liters and is at a temperature of
    7·1 answer
  • why is it essential to know the water temperature in this experiment- to find the vapor pressure of the water
    15·1 answer
  • A flexible vessel contains 32.00 L of gas at a pressure of 1.59 atm. Under conditions of constant temperature and moles of gas,
    14·1 answer
  • A reaction involves the parts of two compounds switching places to form two new compounds. What type of reaction is this?
    9·1 answer
  • _____ net forces cause objects to change their motion. A. Zero B. Applied C. Balanced D. Unbalanced
    13·2 answers
  • Can someone help me please​
    9·1 answer
  • Can someone answer that first this pls im lost
    7·1 answer
  • Scientists observe that iron compounds are able to bind to nutrients in waterways experiencing eutrophication. Which change will
    9·1 answer
  • (Digestion, Intestine, Bile)is secreted by the liver to help in the breaking down of food particles.​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!