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
Nana76 [90]
2 years ago
14

There are the same number of atoms in a mole of calcium (Ca) than in a

Chemistry
1 answer:
zmey [24]2 years ago
5 0

Answer:

True

Explanation:

A mole is defined as a certain amount of a unit. Such as atoms or molecules.

You might be interested in
Calculate ∆U (the change in internal energy) for a system on which 850.00
Illusion [34]

Answer:

The heat gain by the system,

q

=

−

250

kJ

.

The work done on the system ,

w

=

−

500

kJ

.

The First Law of Thermodynamics state that

Δ

U

=

q

+

w

=

−

750

kJ

Explanation:

6 0
2 years ago
Hellllllllllppppppppppppppp!
Art [367]
Please list your question in the comments.
3 0
3 years ago
Read 2 more answers
A force of 5000 newtons is applied to a 1200 kg car at rest. What is its acceleration?
insens350 [35]
The formula for acceleration if rearranged based on the force equation is- force over mass. So 5000/1200=4.16

Your answer is 4 m/s squared.
4 0
2 years ago
What is the molecular formula of an empirical N2H3 if n=2? <br><br>SHOW WORK!
aliya0001 [1]

A compound's empirical formula tells you what the smallest whole number ratio between the atoms that make up that compound is.

I think of the empirical formula as a building block for molecules. A compound's molecular formula will depend on how many building blocks are needed to build a molecule of a given substance.

In your example, you know that the empirical formula of the compound is

NO

2

.

This tells you that the minimum ratio between nitrogen atoms and oxygen atoms is

1

:

2

. In other words, the molecular formula will be a multiple of this building block.

molecular formula

=

empirical formula

×

n

, where

n

- the number of building blocks needed to build the molecular formula.

You also know that the molar mass of your compound is

92 g/mol

.

This means that the molar mass of all the atoms that make up that molecule must add up to give

92 g/mol

.

So, how would you determine how many building blocks you need? Well, start by figuring out the molar mass of one building block, i.e. the molar mass of the empirical formula.

Since it contains one nitrogen atom and two oxygen atoms, you will get

1

×

14.0067 g/mol

+

2

×

15.9994 g/mol

=

46.0055 g/mol

So, if one building block has a molar mass of

46.0055 g/mol

, how many would you need to get the molecule?

46.0055 g/mol

⋅

n

=

92 g/mol

n

=

92

g/mol

46.0055

g/mol

=

1.99976

≈

2

This means that the compound's molecular formula, which lists all the atoms that make up a molecule, will be

(

NO

2

)

×

2

=

N

2

O

4

→

dinitrogen tetroxide

7 0
2 years ago
Read 2 more answers
Does a substance that heats up quickly have a high or a low specific heat capacity
Oliga [24]
A low specific heat capacity
4 0
3 years ago
Other questions:
  • Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reactio
    14·2 answers
  • What is the ph of a 1 m solution of ammonium hydroxide?
    6·1 answer
  • What is the predominant intermolecular force in the liquid state of each of these compounds: hydrogen fluoride (HF), carbon tetr
    7·1 answer
  • B. Why is this number called a "mass” number?
    11·1 answer
  • What types of atoms make up C3H8O?
    8·2 answers
  • I need help with the first problem
    7·1 answer
  • How many lunar phases are there?
    8·1 answer
  • What happens when an ice cube melts in a glass of water?
    11·1 answer
  • Granite forms as magma cools in large underground chambers. After a very long time, the magma cools enough to crystallize into s
    12·1 answer
  • Which statement explains why H2O has a
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!