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
Paladinen [302]
2 years ago
10

Property is part of a system that does not depend on the size or the amount is called....

Chemistry
1 answer:
Reil [10]2 years ago
3 0
The answer is A.extensive.
You might be interested in
5. Didderent betwen group and period.​
Ronch [10]
A group goes vertically and a period goes horizontally.

(a group goes down and a period goes across)
3 0
3 years ago
A kettle takes 3 minutes to boil. Calculate what part of an hour it is.​
daser333 [38]

Answer:

1/20

Explanation:

an hour is 60 minutes and its 3 minutes of an hour therefore its 3/60 hour  or 1/20 of an hour

3 0
2 years ago
Read 2 more answers
Calculate the ph of sweater which has a hydrogen ion concentration of 1 times 10 to the power of 8
telo118 [61]

Answer:

The pH of the sweater containing Hydrogen ion concentration

[H^{+}]=1\times 10^{-8} is

<u>8</u>

<u></u>

Explanation:

pH = It is the negative logarithm of activity (concentration) of hydrogen ions.

pH = -log([H+])

Now, In the question the concentration of [H+] ions is :

[H^{+}]=1\times 10^{-8}

pH = -log(1\times 10^{-8})

use the relation:

log(10^{-a})=a

pH= -(-8)

pH = 8

Note : <em><u> 1 times 10 to the power of 8 must be" 1 times 10 to the power of -8"</u></em>

If the concentration is

[H^{+}]=1\times 10^{8}

Then pH = -8 , which is not possible . So in that  case the pH calculation is by other method

5 0
3 years ago
NH4NO3, whose heat of solution is 25.7 kJ/mol, is one substance that can be used in cold pack. If the goal is to decrease the te
makvit [3.9K]

Answer:

There are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

Explanation:

To decrease the temperature of the solution there are necessaries:

4,184J/g°C×(5,0°C-25,0°C)×(100,0g+X) = -Y

8368J + 83,68J/gX = Y <em>(1)</em>

Where x are grams of NH₄NO₃ you need to add and Y is the energy that you need to decrease the heat.

Also, the energy Y will be:

Y = 25700J/mol×\frac{1mol}{80,043g}X

Y = 321J/g X <em>(2)</em>

Replacing (2) in (1)

8368J + 83,68J/g X = 321J/g X

8363J = 237,32J/gX

<em>X = 35,2g</em>

<em />

Thus, there are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

I hope it helps!

6 0
3 years ago
An enzyme is a catalyst used by living things to promote and regulate chemical reactions. What is the most likely enzyme for the
dem82 [27]
I’m going to guess but B?
5 0
3 years ago
Other questions:
  • Help with 1 through 10 plz
    12·1 answer
  • URGENT HELP PLEASE what is an isotope? And how do you calculate isotopes
    13·1 answer
  • An atomic number stands for the number of _____. neutrons in the nucleus of an atom protons in the nucleus of an atom valence el
    14·1 answer
  • How would Mg change to gain a noble gas structure?<br><br> lose 2 electrons<br> gain 6 electrons
    10·2 answers
  • CN- is a Bronsted - Lowry base. What will this substance form when it accepts a proton?
    9·1 answer
  • What will the volume be of a soltuion created using 120 ml of 4.5 M stock solution if the final molarity needs to be 2.00 M
    12·1 answer
  • Explain how the answer is 4 please
    10·1 answer
  • Question 7
    5·1 answer
  • What is the density of a 500g box whose volume is 67 ml?
    15·1 answer
  • Plzzzzz helpppppp meeeee I am dooo confused
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!