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
Salsk061 [2.6K]
2 years ago
15

How many grams of Cl2 are in 0.345L at STP?

Chemistry
1 answer:
blsea [12.9K]2 years ago
3 0

Answer: 1.09 g

Explanation:

If we use the approximation that 1 mole is 22.4 L, then setting up a proportion,

  • 1/22.4 = x/0.345 (x is the number of moles in the sample)
  • x = 0.0154 mol

Since the mass of a mole of chlroine is about 70.9 g/mol, (0.0154)(70.9) = 1.09 g (to 3 s.f.)

You might be interested in
ASAP I AM GIVING BRAINLIEST PLEASEEEEEEEEE HELPPPPPPPPPPPPPPPPPP
zepelin [54]

Answer:

B?

Explanation:

In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

7 0
3 years ago
Krupton (Kr) is a <br><br>A. Gas<br>B. Metal<br>C. Non of these<br>D. Metalloid​
Katarina [22]
B is gas


The chemical element krypton is classed as a noble gas and a nonmetal.







Love you
3 0
3 years ago
PLEASE HELP ASAP WILL GIVE BRAINLIEST
kirill115 [55]

The amount of heat required to convert H₂O to steam is :  382.62 kJ

<u>Given data :</u>

Mass of liquid water  ( m ) = 150 g

Temperature of liquid water = 43.5°C

Temperature of steam = 130°C

<h3 /><h3>Determine the amount of heat required </h3>

The amount of heat required = ∑ q1 + q2 + q3 ----- ( 1 )

where ;

q1 = heat required to change Temperature of water from 43.5°C to 100°C .  q2 = heat required to change liquid water at 100°C to steam at 100°C

q3 = heat required to change temperature of steam at 100°C to 130°C

  • For q1

M* S_{water}*ΔT

= 150 * 4.18 * ( 100 - 43.5 )

= 35425.5 J

  • For q2

moles * ΔHvap

= (150 / 18 )* 40.67 * 1000

=  338916.67 J

  • For q3

M * S_{steam} * ΔT

= 150 * 1.84 * ( 130 -100 )

= 8280 J

Back to equation ( 1 )

Amount of heat required = 35425.5  + 338916.67 + 8280 = 382622.17 J

                                                                                               ≈ 382.62 kJ

Hence we can conclude that The amount of heat required to convert H₂O to steam is :  382.62 kJ.

Learn more about Specific heat of water : brainly.com/question/16559442

6 0
3 years ago
2.04 thermal and chemical change
bazaltina [42]

Explanation:

thermal changes are those in which heat exchange is involved like endothermic and exothermic

while in chemical changes collision between the reactant occurs which result into product

8 0
1 year ago
Drag each label to the correct location on the image.
sladkih [1.3K]

Answer:

Reactants, the top would be activation energy, the bottom is energy released by reaction, products

Explanation:

5 0
2 years ago
Other questions:
  • Which of the following would represent a single displacement reaction between Potassium Bromide (K^+Br^-) and Iodine (I), which
    12·1 answer
  • How many atoms are in 2 moles of phosphorus
    14·1 answer
  • When did oxygen first appear in earth's atmosphere??
    6·1 answer
  • How much of a 1.00 mg sample of americium remains after 3 half-lives?
    13·2 answers
  • What is the electronic configuration of Au3+?
    11·1 answer
  • If you want brainliest say hi ill give you it
    10·1 answer
  • Loretta and her friends want to find out which of their pets can run the fastest. Which kind of scientific investigation should
    11·2 answers
  • 2. What does the atomic mass of a neutral atom tell you?
    13·1 answer
  • Janice ran a 5 km race on Saturday at 0.75 h. What was her speed?<br><br><br> HELP MEHHH NOWWWW
    10·2 answers
  • What did I do wrong?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!