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
Zigmanuir [339]
3 years ago
6

The number of protons in an atom is called the what???

Chemistry
1 answer:
ludmilkaskok [199]3 years ago
4 0
It is called the atomic number. (In physics it can also be called the proton number)
You might be interested in
Which of the following bonds is the most reactive? A. C—C B. N—H C. O—O D. C—H
USPshnik [31]
I think the answer is b
6 0
3 years ago
Active and inactive volcano in philipines?
finlep [7]

355 volcanoes in the Philippines are inactive.

24 volcanoes are active

3 0
3 years ago
If you have 100 ml of a 0.10 m tris buffer (pka 8.3) at ph 8.3 and you add 3.0 ml of 1.0 m hcl, what will be the new ph?
sukhopar [10]

The new pH is 7.69.

According to Hendersen Hasselbach equation;

The Henderson Hasselbalch equation is an approximate equation that shows the relationship between the pH or pOH of a solution and the pKa or pKb and the ratio of the concentrations of the dissociated chemical species. To calculate the pH of the buffer solution made by mixing salt and weak acid/base. It is used to calculate the pKa value. Prepare buffer solution of needed pH.

                       pH = pKa + log10 ([A–]/[HA])

Here, 100 mL  of  0.10 m TRIS buffer pH 8.3

                 pka = 8.3

         0.005 mol of TRIS.

∴  8.3 = 8.3 + log \frac{[0.005]}{[0.005]}

<em>    </em>inverse log 0 = \frac{[B]}{[A]}

   \frac{[B]}{[A]} = 1

Given; 3.0 ml of 1.0 m hcl.

           pka = 8.3

           0.003 mol of HCL.

pH = 8.3 + log \frac{[0.005-0.003]}{[0.005+0.003]}\\pH = 8.3 + log \frac{[0.002]}{[0.008]}\\\\pH = 8.3 + log {0.25}\\\\pH = 8.3 + (-0.62)\\pH = 7.69

Therefore, the new pH is 7.69.

Learn more about pH here:

brainly.com/question/24595796

#SPJ1

 

8 0
1 year ago
Question 2 of 19
Alborosie

Answer:

D

Explanation:

The temperature increases

3 0
2 years ago
2C2H2(g) + 502(g) → 4C02(g) + 2H20(g) reaction type?
ratelena [41]

Answer:

The answer is combustion.

7 0
2 years ago
Other questions:
  • I make my cup of coffee in the morning by pouring boiling water over ground-up coffee beans held in a special piece of paper and
    6·1 answer
  • Consider a sample of 11.2 g of ice initially at 0.0 C. How much energy in kilojoules is required to melt the ice and warm it to
    12·1 answer
  • 1 Which best defines concentration?A ratio that describes the amount of solute divided by the amount of solvent or solutionB rat
    11·1 answer
  • By which mechanism would a steroid molecule diffuse into the cell?
    8·1 answer
  • 3500 g of 5.00°C water is heated until its temperature is 37.0°C. If the specific heat of
    8·1 answer
  • Help plz:)))I’ll mark u Brainliest
    5·1 answer
  • The question is listed in the image attached.
    10·1 answer
  • 4. When the speed of the following water increases it cuts into the
    8·1 answer
  • What moon phase occurs on the 7th day of the lunar cycle?
    7·1 answer
  • The dimensions of a box are 4.5 cm wide by 5.750 cm long by 1.50 cm tall. What is the volume of the box , taking significant fig
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!