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
EastWind [94]
3 years ago
14

When a chemical property is observed, the identity of the substance _______ changes. A. sometimes B. never C. always D. rarely

Chemistry
2 answers:
kondaur [170]3 years ago
7 0

The answer is c) always

denpristay [2]3 years ago
3 0

c) always

chemical refers to what happens when heat is applied so chemical properties change the identity(state, appearance, etc) of a substance

You might be interested in
Why is a solution not a pure substance
Firlakuza [10]
It is not a pure substance, because a solution are mixed chemicals in a way that the molecules are not bonded with one another. Thus, separating them from compounds and elements, which are pure substances.
8 0
3 years ago
A body of mass 5kg has momentum of 125kgm/s. find the velocity of the body in motion.
borishaifa [10]

Explanation:We have momemtum = mass X velocity

    p = mv

    OR, p/m = v

    v = (125kg m/s)25kg

    v = 125/25 m/s

       v = 5 m/s

8 0
3 years ago
Plz help for chemistry quiz I’ll mark brainliest
zvonat [6]

Answer: All of these answers are sorrect

ExplanationA scientist does all of these things while operforming a experiment

4 0
3 years ago
How am I ment to label this diagram
lora16 [44]
I believe you have to label out the positive metal ion and the delocalized electrons. They're the 2 things that makes up a metal structure.

In the diagram, the circles with the + symbol are the positive metal ions, since + represents positive. And the remaining - circles are the delocalized electrons, as electrons are negative.

And for how a metal conducts electricity, since they're delocalized mobile electrons present in any metal structures, they're able to move away from the metal to the positive side of the battery and more electrons can replace their place flowing from the negative side.
5 0
3 years ago
#2: A gas at unknown pressure and a volume of 66 cm has its pressure changed to 150 kPa. The new volume
Murljashka [212]

Answer:

<h2>377 kPa</h2>

Explanation:

The original pressure can be found by using the formula for Boyle's law which is

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we're finding the original pressure

P_1 =  \frac{P_2V_2}{V_1}  \\

150 kPa = 150,000 Pa

We have

P_1 =  \frac{150000 \times 166}{66}  =  \frac{24900000}{66}  \\  = 377272.72...

We have the final answer as

<h3>377 kPa</h3>

Hope this helps you

7 0
3 years ago
Other questions:
  • Why can baking soda be used to put out fires? (2 reasons)
    7·1 answer
  • What two actions are required to work together to move water to the top of tall plants? capillary action and gravity evaporation
    12·2 answers
  • How many moles of co2 will be produced from 72.0 g of ch4 assuming o2 is available in excess
    10·1 answer
  • Which description best characterizes the motion of particles in a solid?
    10·2 answers
  • Type the correct answer in the box. Express your answer to three significant figures. A balloon is filled with 0.250 mole of air
    9·1 answer
  • The circulatory system works with other systems to (select all that apply)
    14·1 answer
  • What occurs if two objects at different temperatures are in contact?
    12·1 answer
  • If each water molecule contains 2 hydrogen atoms, how many total oxygen atoms in 20 water molecules?
    14·1 answer
  • ¿por qué la conducción ocurre más lentamente en los gases que en los sólidos?​
    12·1 answer
  • Can bacteria reproduce
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!