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
Anni [7]
3 years ago
9

Which is a physical change? A) Rusting iron B) Burning paper C) Reacting baking soda and vinegar D) Separating a mixture of salt

and wat
Chemistry
1 answer:
Deffense [45]3 years ago
7 0

Answer:

D

Explanation:

You might be interested in
Which is the largest thing in the world???????????
Ksivusya [100]

<em>S</em><u><em>equoia trees</em></u> are the largest thing in the world or planet

thanx

<u>h</u><u><em>ope it helps you mark as brainlest</em></u>

5 0
3 years ago
Read 2 more answers
Inertia increases as an object's_______increases.
lilavasa [31]

Answer:

<h2><em><u>MASS</u></em></h2>

Explanation:

Inertia increases as an object's <u>Mass</u> increases.

3 0
3 years ago
A substance registers a temperature change from 20 to 40 to what incremental temperature change does this correspond
ss7ja [257]

<u>Given:</u>

Initial temperature, T1 = 20 C

Final temperature, T2 = 40 C

<u>To determine:</u>

The temperature change

<u>Explanation:</u>

Convert degree C to Kelvin

Temperature in Kelvin = degree C + 273

T1 = 20 + 273 = 293 K

T2 = 40 + 273 = 313 K

Incremental temperature change = T2 - T1 = 313-293 = 20 K

Ans: The temperature change in kelvin is 20 K

3 0
3 years ago
The sample of 15.0 g of KCl is dissolved into a solution with a total volume of 250.0 mL. What is the molarity of KCl in the sol
lina2011 [118]

Answer:

0.805 M.

Explanation:

Hello!

In this case, since the molarity of a solution is computing by dividing the moles of solute over the volume of solution in liters (M=n/V), for 15.0 g of potassium chloride (74.55 g/mol) we compute the corresponding moles:

n=15.0gKCl*\frac{1molKCl}{74.55gKCl}=0.201molKCl

Next, since the volume is 0.2500 in liters, the molarity turns out:

M=\frac{0.201mol}{0.2500L} \\\\M=0.805M

Best regards!

3 0
3 years ago
When biological samples of unknown origins are discovered at a crime scene, what should investigators do?a. assume no pathogens
adoni [48]

Answer: assume pathogens are present and treat the samples accordingly

Explanation:

When investigators are unable to conclusively ascertain the source of a biological sample found at a crime scene, the correct thing to do is to treat it as if pathogens are present in it and handle it according to set rules on how to handle pathogens.

This is done to ensure that if a pathogen is indeed present, it would not cause a health emergency by infecting those who come in contact with the samples at the scene.

3 0
3 years ago
Other questions:
  • Which element has four eletrons in its outer p orbitals?
    6·1 answer
  • Which of these redox reactions is spontaneous as written?
    10·1 answer
  • PLZ HELP HURRY PLZZZZZ WILL GIVE BRAINLIEST
    12·1 answer
  • The tarnish that forms on objects made of silver is solid silver sulphide. This can be removed by reacting it with aluminium met
    6·1 answer
  • According to valence bond theory, which orbitals overlap in the formation of the bond in HCl?
    10·1 answer
  • Lab report for physical and chemical changes??!
    13·1 answer
  • How much heat is required to boil 78.5 gg of water at its boiling point?
    15·1 answer
  • Use the drop-down menus to match the name and structure for the following cycloalkanes. A five-sided polygon. A square. A five-s
    6·1 answer
  • BALANCE THE EQUATION:<br> C4H10 + O2 = CO2 + H2O
    7·1 answer
  • How much energy does a 445 nm wave of light have? (The speed of light in a
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!