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
hammer [34]
3 years ago
14

I need help on this

Chemistry
1 answer:
sasho [114]3 years ago
3 0

Answer: Y and Z. It's D.

Explanation: W represents evaporation, which is a physical change. X represents dissolving, which is also a physical change. If X and W aren't chemical changes, then Y and Z must be if half of the choices are.

You might be interested in
Five elements named after color
Dmitry [639]
Caesium -bluish(Latin) Chlorine -yellow/green (Greek) Iodine -violet (Greek) <span>Rhodium -rose (Greek) Sulphur - yellow (Arabic)</span>
4 0
3 years ago
What rules should you follow when adding and subtracting? Check all that apply. 1. The exponents in scientific notation should b
Damm [24]
The answer to this question would be: 
<span>2. The exponents need to be the same so the leading numbers can be added or subtracted.
3. The result has the same number of decimal places as the least precise number.

</span>The exponent is the 10^x that used in scientific notation. .When adding 12.3* 10^5 with 34.56 * 10^4, you need to make the exponent same first. In this case, it would become 12.3* 10^5 + 3.456 * 10^5= 15.756* 10^5
The decimal place could be rounded up to the least precise number. I'm not sure with the significant figures but it seems to use the biggest one.
3 0
4 years ago
Read 2 more answers
1. The Yerkes-Dodson Law says
goblinko [34]

Answer:

The Yerkes-Dodson Law suggests that there is a relationship between performance and arousal. Increased arousal can help improve performance, but only up to a certain point.

Explanation:

4 0
3 years ago
According to Le Chatelier’s principle, what happens when the concentration of reactants is doubled ina chemical reaction that wa
Paraphin [41]
The equilibrium shifts to the right to favor the formation of the products. Le Chatelier's principle states that a system will do what it takes to negate any changes made or added to it.
3 0
4 years ago
Read 2 more answers
Every day a 6th grade class puts candy into bags to prepare for Valentine's Day. They put
Amiraneli [1.4K]
70 bags is the answer.
They add “They put 7 pieces of candy in each bag to throw you off”
To find the answer just divide 28 bags by 4 days to get how many bags they make in 1 day. Take that number “7” and multiply it by 10 days. The answer is then 70.
7 0
3 years ago
Other questions:
  • Is Actinium Metal, Non-Metal ,or Semi-Metal?
    14·1 answer
  • If a sample contains 74.0% of the R enantiomer and 26.0% of the S enantiomer, what is the enantiomeric excess of the mixture?
    8·1 answer
  • In your own words, give two reasons why it is important to work with a partner while completing a lab.
    5·1 answer
  • In the equation PbO2 + 4HCl → 2H2O + PbCl2 + Cl2, how many electrons are transferred? A. 1 B. 2 C. 3 D. 4
    5·2 answers
  • So what exactly is motion?​
    7·1 answer
  • A chemist measures the amount of bromine liquid produced during an experiment. She finds that 496g of bromine liquid is produced
    6·1 answer
  • _______ properties depend on the concentration of a solute in a solution but not on the identity of the solute.
    5·1 answer
  • Which chemical species is responsible for the peaks near each wavelengths, 480 \pu{nm}nm and 430 \pu{nm}nm, respectively
    14·1 answer
  • PLEASE HELP ASAPP question in pic!!
    11·1 answer
  • Explain why natural resources are not distributed equally across Earth.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!