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
Dima020 [189]
3 years ago
5

A chemist wants to make 6.5 L of a 0.340 M CaCl2 solution. Part A What mass of CaCl2 (in g) should the chemist use? Express your

answer using two significant figures.
Chemistry
1 answer:
katovenus [111]3 years ago
3 0

Answer:

The answer to your question is 245 grams

Explanation:

Data

Volume 6.5 L

Molarity = 0.34

mass of CaCl₂ = ?

Process

1.- Calculate the molar mass of CaCl₂

molar mass = (1 x 40) + (2 x 35.5)

                   = 40 + 71

                   = 111 g

2.- Convert the grams to moles

                       111 g of CaCl₂ -------------- 1 mol

                         x                   ---------------0.34 mol

                         x = (0.34 x 111) / 1

                         x = 37.74 g

3.- Calculate the total mass

                        37.74 g ------------------ 1 L

                            x        ------------------ 6.5 L

                            x = (6.5 x 37.74) / 1

                            x = 245.31

You might be interested in
How many joules are needed to warm 65.6 grams of water from 14ºC to 22.5ºC?
Ahat [919]

Answer:

2334.1136 Joules

Explanation:

Q= 65.6 g (4.186)(8.5)

If it's suppose to be in kilograms, the answer will be 2.3341136 Joules.

7 0
3 years ago
What is the wavelength if the frequency is 29.2 hz?
ZanzabumX [31]

Answer : The wavelength is 1.027\times 10^7m

Solution : Given,

frequency = 29.2 Hz

Formula used :

\nu=\frac{c}{\lambda}\\\lambda=\frac{c}{\nu}

where,

\nu = frequency

\lambda = wavelength

c = speed of light = 3\times 10^8m/s

Now put all the given values in this formula, we get the wavelength.

\lambda=\frac{3\times 10^8m/s}{29.2Hz}=0.1027\times 10^8m=1.027\times 10^7m                 (1Hz=1s^{-1})

Therefore, the wavelength is 1.027\times 10^7m

8 0
3 years ago
Which of the following is the best choice for presenting the percent
Alik [6]
OD










hope this helps!!
3 0
2 years ago
Read 2 more answers
What is the acknowledgment to ''Do all liquids evaporate at the same rate?'
natita [175]
<span>'Do all liquids evaporate at the same rate
 that would be false

</span>
4 0
2 years ago
Explanation about the combining powers of element chemistry
stiv31 [10]

Answer:

<em>Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. The noble gases have the valency 0 as they do not usually combine with other elements.</em>

Explanation:

HOPE IT HELPS

5 0
2 years ago
Other questions:
  • What tools do scientist use
    7·2 answers
  • How is an area's topography determined
    13·2 answers
  • A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.
    12·1 answer
  • Which statement most accurately compares the temperature of the core of the sun to its surface
    8·1 answer
  • PLEASE HELP Determine the number of neutrons for the given isotopes:
    12·2 answers
  • What is a binary acid?
    14·1 answer
  • Which characteristics do photosynthesis and cellular respiration have common
    8·1 answer
  • Who first arranged the elements according to nuclear charge?
    9·2 answers
  • Plz answer this fast... will mark ur answer as brainliest
    10·2 answers
  • What are the chemical properties of neon?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!