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
attashe74 [19]
3 years ago
15

What are three examples of matter you can see where you are right now. Thanks for the help everyone!

Chemistry
2 answers:
valentinak56 [21]3 years ago
7 0
Bed, book, bottle your welcome
DaniilM [7]3 years ago
5 0

Answer: So you are matter, the apple, water, a computer etc.

Explanation: matter is anything that takes up space

You might be interested in
which method would be best for separating the compounds of a mixture that is made from two diffrent liquids
kobusy [5.1K]

Answer:

fractional distillation since ot depends on the different liquids to have different boiling points

5 0
2 years ago
When the following equation is balanced, what is the coefficient of oxygen?
Gwar [14]

Answer:

The answer is 3

C2H5OH + O2 CO2 +H2O (unbalanced)

C2H5OH +3O2(g). 2CO2(g)+3H2O(balanced)

4 0
3 years ago
How much would the temperature of 275 g of water increase if 36.5 kj of heat were added?
Andrew [12]

<u>Answer:</u> The temperature increase will be 31.70°C.

<u>Explanation:</u>

To calculate the increase in the temperature of the system, we use the equation:

q=mc\Delta T

where,

q = Heat absorbed = 36.5 kJ = 36500J

m = Mass of water = 275 g

c = Specific heat capacity of water = 4.186J/g^oC

\Delta T = change in temperature = ? °C

Putting values in above equation, we get:

36500J=275\times 4.186J/g^oC\times \Delta T\\\\\Delta T=31.70^oC

Hence, the temperature increase will be 31.70°C.

8 0
3 years ago
Read 2 more answers
On the basis of the information above, a buffer with a pH = 9 can best be made by using
telo118 [61]

Answer:

D H2PO4– + HPO42–

Explanation:

The acid dissociation constant for \mathbf{H_3PO_4 , H_2PO^{-}_4 ,  HPO_4^{2-}} are \mathbf{7\times 10^{-3}, \ \ 8\times 10^{-8} ,\ \  5\times 10^{-13}} respectively.

\mathbf{pka (H_3PO_4) = -log (7\times 10^{-3} )=2.2}

\mathbf{pka (H_2PO_4^-) = -log (8\times 10^{-8} )=7.1}

\mathbf{pka (HPO_4^{2-}) = -log (5\times 10^{-13} )=12.3}

The reason while option D is the best answer is that, the value of pKa for both

\mathbf{H_2PO^{-}_4 ,\  \& \  HPO_4^{2-}} lies on either side of the desired pH of the buffer. This implies that one is slightly over and the other is slightly under.

Using Henderson-Hasselbach equation:

\mathbf{pH = pKa + log \Big( \dfrac{HPO_4^{2-}}{H_2PO_4^-} \Big)}

3 0
3 years ago
The atomic number of gold (Au) is 79, and it has a mass number of 197. How many electrons are present in each atom of gold?
aliya0001 [1]
There would be 79 electrons present in each atom of gold. I hope this helps :)
8 0
3 years ago
Other questions:
  • how many mL of a 3.5 M sodium hydroxide will be needed to neutralize 15mL of a 4.3 M hydrochloric acid solution?
    5·1 answer
  • which type of chemical reaction does this word equation exemplify: methane gas reacts with oxygen gas to produce carbon dioxide
    14·2 answers
  • What is the definition of enthalpy heat of vaporization?
    9·1 answer
  • HURRY HELP PLEASE!!
    7·1 answer
  • A tank holds 6.90 m3 of water. What is the volume in ft3? (3.28 ft = 1 m, Remember significant figures, but this answer does not
    13·2 answers
  • Example of a stimulas and response in a organism
    11·1 answer
  • The relationship between pressure and temperature of a gas, when volume and moles of a gas are held constant, is: P*T = k.
    14·1 answer
  • What is the specific heat of a substance if a mass of 10.0 kg increases in temperature from 10.0°C to 70.0°C when 2,520 J of hea
    10·1 answer
  • Cual es la formula universal de
    6·1 answer
  • Calcule la molaridad de una solución acuosa de ácido sulfúrico (H₂SO₄) que se preparó al mezclar, en un recipiente aforado, 4 mo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!