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
Vsevolod [243]
2 years ago
6

CLUES:

Chemistry
1 answer:
Phantasy [73]2 years ago
5 0
5 because it makes sense
You might be interested in
The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of
CaHeK987 [17]

4 moles of hydrogen  = 4 * 1.008 = 4.032 grams

1 mole of helium = 4.003 grams

Difference is  4.032 - 4.003

= 0.029 g

7 0
3 years ago
Read 2 more answers
A 251 ml sample of 0.45M HCl is added to 455 mL of distilled water. What is the molarity of the
Oksi-84 [34.3K]

<u>We are given:</u>

251 mL sample of 0.45M HCl added to 455 mL distilled water

<u>Whack a mole! (finding the number of moles):</u>

We know that in order to find molarity, we use the formula:

Molarity = number of moles / Volume (in L)

so, number of moles is:

Number of moles = Molarity * Volume(in L)

now let's plug the values for the HCl solution to find the number of moles

Number of moles = 0.45M * 0.251 L

Number of moles = 0.113 moles

<u>Time to concentrate (finding the final concentration):</u>

Total final volume = 251 mL + 455 mL = 706 mL = 0.706 L

Number of moles of HCl = 0.113 moles

Molarity = Number of moles / Volume (in L)

Molarity = 0.113 / 0.706

Molarity = 0.16 M

___________________________________________________________

<u>BONUS METHOD TIME!!!</u>

We know the relation:

M1 * V1 = M2 * V2

where M1 and M2 are the initial and final molarities and V1 and V2 are initial and final volumes respectively

notice that I didn't mention that the volume has to be in Liters, that's because of the units being concerned with both sides of the equation, say I have the volume in mL and want to convert both these volumes to L, I would divide both sides by 1000, which would NOT change the overall value

Now, plugging values in this equation

(0.45) * (251) = (251 + 455)* (M2)

112.95 = (706)(M2)

M2 = 112.97/706                                [dividing both sides by 706]

M2 = 0.16 Molar

8 0
2 years ago
Convert 0.74Kcal/min to cal/sec
professor190 [17]
<span>0.74 Kcal/min x 1000 cal/60 s         


</span>
6 0
3 years ago
What is Force? I'll Mark BRAINLIEST ​
Luda [366]

Answer:

A push or pull is referred to as a force. Forces can cause objects to move, slow, stop, or change the direction in which they travel. The force of gravity, for example, pulls all objects toward the Earth's center. Every time two things interact, a force is exerted on each of them. When this happens, the two items no longer feel the force after the interaction ends.

5 0
2 years ago
Read 2 more answers
Which wave has the greatest distance from trough to trough?
mylen [45]

Answer:

a

Explanation:

8 0
2 years ago
Other questions:
  • For each pair, predict which molecule has the greater molar entropy under the same conditions (assume gaseous species).c o 2, ca
    14·1 answer
  • Radiation _____. A. occurs in solids. B. occurs in liquids. C. requires physical contact between molecules. D. is the method of
    10·1 answer
  • Muscle physiologists study the accumulation of lactic acid [CH3CH(OH)COOH] during exercise. Food chemists study its occurrence i
    12·1 answer
  • What is the IUPAC name of this compund?​
    15·2 answers
  • How has the work of chemists affected the environment?
    11·2 answers
  • Plsss help this midterm ends 12.30
    11·1 answer
  • The stored form of energy based on an object's position is called....?
    9·2 answers
  • 1. The electron arrangement ions X and Y2 are 2, 8, and 2, 8, 8 respectively.
    14·1 answer
  • When does a cell grow in size
    15·2 answers
  • An adult with the flu has a temperature of 102°F. Express your answer as an integer.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!