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
rodikova [14]
2 years ago
10

Which of the following is/are true?

Chemistry
1 answer:
tatiyna2 years ago
8 0

C

Tarnishing of silver is caused by hydrogen sulfide and other sulfur containing compounds in the air reacting to the silver and resulting in a fine layer of silver sulfide. The other answers don't make sense

You might be interested in
An object has a density of 10.00 g/mL. If the object has a volume of<br> 25.00 ml, what is the mass?
SVEN [57.7K]

Answer:

The answer is

<h2>250 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume of object = 25 mL

Density = 10 g/mL

The mass of the object is

mass = 25 × 10

We have the final answer as

<h3>250 g</h3>

Hope this helps you

6 0
3 years ago
How many grams of KBr is required to prepare 100 mL of<br> 2.0 M KBr solution?
sesenic [268]

Answer:

23.8g

Explanation :

Convert 2.0M into mol using mol= concentration x volume

2.0M x 0.1L (convert 100mL to L since the units for M is mol/L)

= 0.2 mol

We can now find grams by using the molar mass of KBr

=119.023 g/mol (Found online) webqc.org

but can be be calculated by using the molecular weight of K and Br found on the periodic table

We can now calculate the grams by using grams=mol x molar mass

119.023g/mol x 0.2mol

= 23.8046 g

=23.8g (rounded to 1decimal place)

4 0
2 years ago
In Humans, the liquid waste
Kay [80]
The answer is b (bladder)
8 0
3 years ago
A measure of the kinetic energy of particle motion within a substance is temperature.
Natali5045456 [20]
I believe it’s true when particles move they create heat
4 0
3 years ago
Read 2 more answers
In everyday speech the words precision and accuracy are often used interchangeably. When these terms are used in science are the
padilas [110]

Answer:

            No, in science their meanings are not the same as their everyday meanings.

Explanation:

                   In Science, Precision and Accuracy are defined as,

Accuracy:

               Accuracy is the value which is closest to the known or standard value.

Precision:

                While, Precision is the value of closeness of two measured values to each other.

Example:

             Let suppose in Chemistry Lab you weight an object as 50 g. While the actual weight of that object is 30 g. It means your reading is not accurate.

             On second measurement you find that the object weight is 31 g. This time your reading is not precise.

3 0
3 years ago
Other questions:
  • In the previous question you were provided with an extra piece of information: you were told that only liquid water would be pre
    12·1 answer
  • Facial dimples in man are dominatant over no dimples. Show
    7·1 answer
  • The slope of the velocity versus time graph of an object with positive velocity and acceleration is ________, and the shape of t
    11·1 answer
  • Which best describes a compound such as sodium chloride
    5·2 answers
  • A concentrated solution of compound A in the same solvent was diluted from an initial volume of 2.00 mL to a fi nal volume of 25
    7·1 answer
  • Why does liquid stay at a constant temperature while it is boiling?
    15·2 answers
  • Indicate the oxidation number of oxygen for each compound in the following reaction: 2H2O2(aq)→ 2H2O(l) O2(g) Select the choice
    9·1 answer
  • How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen?
    8·1 answer
  • Jill and Scott both road their bikes bfor 30 minutes. Jill traveled 5 kilometers and Scott traveled 10. Calculate each persons s
    5·1 answer
  • aqueous lithium hydroxide solution is used to purify air (remove co2) in spacecrafts and submarines. the pressure of carbon diox
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!