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
mezya [45]
3 years ago
8

Karl puts a piece of ice in a small plastic bottle without a cap, and finds that the mass of bottle and ice is 18.1 g. Several h

ours later he finds that the mass of the bottle and water is 17.8 g. From these measurements, which of the following most likely happened?
A
The density of the ice decreased as it melted.

B
Some water evaporated from the bottle.

C
Water condensed on the bottle from the air.

D
Mass was not conserved when the ice melted.
Chemistry
2 answers:
IceJOKER [234]3 years ago
7 0
Is a because the density of the ice
Elodia [21]3 years ago
5 0
Is A “the density of the ice decreased as it melted”
You might be interested in
Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g)+2H2(g)?C2H6(g)
Alecsey [184]

Answer:

Keq =1.50108

Explanation:

The given reactionis

 C₂H₂(g) +2H₂(g) -------------> C₂H₂(g)

   ΔG0 f=ΔG0f n (products) - ΔG0f n (reactants )

              = -32.89 kJ/mol - (209.2 kJ/mol+2*0.0 kJ/mol)

              = - 242.09kJ/mol

   ΔG= -RTlnKeq

   ln Keq = -ΔG/RT

           =-(- 242.09kJ/mol ) / 2 k cal /mol*298 K

           =0.406

    Keq =e0.406

         Keq =1.50108

3 0
3 years ago
Read 2 more answers
Proportional tax<br> regressive tax<br> progressive tax
Crazy boy [7]

I am sorry can you explain it more?

3 0
3 years ago
What volume of a 6.67 M NaCl solution contains 3.12 mol NaCl? L
harkovskaia [24]

Answer:

0.47dm³

Explanation

Given parameters :

Molarity of NaCl = 6.67M

Number of moles = 3.12mol

Volume of NaCl =?

Volume of NaCl = number of moles/Molarity

Volume of NaCl = 3.12mol/6.67M

Volume of NaCl = 0.47dm³

4 0
4 years ago
Read 2 more answers
What is 2n2 formula? ​
allsm [11]

Answer:The distribution of electrons in an atom is called as Electronic Configuration. Formula 2n2 helps in the determination of the maximum number of electrons present in an orbit, here n= orbit number.

Explanation:

5 0
3 years ago
Which of the following best explains why you sanded the copper wire before burning it? to create less friction between the coppe
artcher [175]

The copper wire was sanded before burning in order to make sure that copper metal was exposed on the surface of the wire.

Answer: B

Explanation

The copper wire when placed in atmosphere without coating leads to oxidation of copper metal with respect to the impurities present in the atmosphere.

As copper is electropositive in nature, so electronegative ions present in the universe will try to react with copper and the copper will react easily with other elements.

So generally copper wire is coated with color or polymer coating.

In this case, the copper wire without any coating is sanded, so that the eddy sheets or polishing materials on friction with copper wire will remove the impurities by the electrostatic law of conservation of charges and charge transfer.

As the impurities are removed when copper wire is sanded, the copper atoms will be exposed on the surface of the wire leading to burning of copper in the copper wire.

8 0
3 years ago
Other questions:
  • How can you determine the quantities of reactants and products in a chemical reaction
    15·1 answer
  • Enter the net ionic equation representing solid chromium (iii) hydroxide reacting with nitrous acid. express your answer as a ba
    14·2 answers
  • A silver block, initially at 59.4 °C, is submerged into 100.0 g of water at 24.8 °C, in an insulated container. The final temper
    8·1 answer
  • Please do question 20 (help)
    9·1 answer
  • If the pOH of a solution is 3.01, what is the concentration of the Mg(OH)2 solution?​
    5·2 answers
  • Most of the elements to the left of the stair-step line in the periodic table exist as _________ in the periodic table.
    6·1 answer
  • Write 2.0 x 10^-3 in standard notation.
    6·2 answers
  • Explain the difference between naming an ionic compound and a covalent (molecular) compound.
    12·1 answer
  • The plant on the left is growing more because it has been receiving more water
    5·1 answer
  • There are several different models that represent compounds. One type of model is shown.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!