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
TEA [102]
3 years ago
9

A substance that functions to prevent rapid, drastic changes in the pH of a body fluid by changing strong acids and bases into w

eak acids and bases is called a(n):
A. Buffer
B. Salt
C. Enzymes
D. Coenzyme
Chemistry
2 answers:
Inga [223]3 years ago
5 0
A. Buffer is the answer.
lyudmila [28]3 years ago
3 0
I believe the answer is A) Buffer
You might be interested in
Calculate the percent oxygen in potassium chlorate (KClO3)
andreev551 [17]

Molar Mass of KCLO3

= 39 + 35.5 + 48 g

= 122.5 g .

So , percentage of Potassium ( K )

= 39 / 122.5 * 100 %

= 31.83 %

Now , percentage of Chlorine ( Cl )

= 35.5 / 122.5 * 100 %

= 28.97 %

So, finally, percentage of Oxygen ( O )

= 48 / 122.5 * 100 %

= 39.18 %

7 0
3 years ago
Read 2 more answers
Who developed the initial model of the atom but didn’t know about subatomic particles
Yuri [45]

Answer:

firstly ,<u>GREEK PHILOSPHER   </u><u>DEMOCRITUS </u>suggested that matter is composed of tiny particles called atom . In the beginning of 19th century <u>JOHN DALTON  </u> put forward atomic theory . At the end of 19th century it was considered that  atom can not be subdivided .

6 0
3 years ago
True or False: A heterozygous genotype produces the dominant phenotype because the dominant allele masks the recessive allele.
jasenka [17]
This is true! Heterozygous would be Dd, and the dominant masks the recessive
4 0
3 years ago
On hot days, you may have noticed that potato chip bags seem to "inflate", even though they have not been opened. If I have a 25
Slav-nsk [51]

The new volume of the bag will be 789.5 mL.

<u>Explanation:</u>

As per the Charles law, at constant pressure the volume of the gas is directly related to its temperature in Kelvin (K). That is as the temperature increases, the gas expands and vice-versa.

$\frac{V1}{T1} = \frac{V2}{T2}\\

V1 = 250 ml

V2 = ?

T1 = 19° C

T2 = 60° C

Now we have to rewrite the equation to get the new volume as,

V2 = $\frac{V1T2}{T1}

    =$\frac{250\times60}{19}

<em>     </em>= 789.47 ≈ 789.5 ml.

So the new volume of the bag will be 789.5 mL.

7 0
3 years ago
Use the atom builder interactive to identify each nucleus. Two protons represented as purple spheres and one neutron represented
aleksandr82 [10.1K]

Answer:

\frac{3}{2}He

\frac{6}{2} He

\frac{7}{4}Be

\frac{3}{1} H

\frac{6}{4}Be

\frac{7}{3} Li

Explanation:

In the first nucleus we are told that there are two protons and one neutron. Let us remember that the mass number = number of protons + number of neutrons.

This implies that, for the first specie the mass number is 3, for the second specie the mass number is 6 and the third specie has a mass number of 7 and so on. The mass number is indicated as a superscript.

The atomic number is the number of protons in the nucleus of the atom and helps us to identify the atom. It is always written as a subscript as shown.

5 0
3 years ago
Other questions:
  • Convert 95 kPa to mmHg
    9·1 answer
  • A chemistry student is given 1.00 L of a clear aqueous solution at 18.0 °C. He is told an unknown amount of a certain compound
    12·1 answer
  • The heat of vaporization, ΔHvap of carbon tetrachloride (CCl4) is 43000 J/mol at 25 °C. 1 mol of liquid CCl4 has an entropy of 2
    5·1 answer
  • Which is heavier einsteinium (Es) or europium (Eu)
    10·1 answer
  • I need help on 14-17
    5·1 answer
  • If one mole of PtCl2·3NH3 reacts with AgNO3 to produce one mole of AgCl(s), how can the formula PtCl2·3NH3 be re-written to show
    12·1 answer
  • g A chemist prepares a solution of barium acetate by measuring out 107 umol of barium acetate into a ml 200 volumetric flask and
    5·1 answer
  • Which option describes a solution that has less of a solute dissolved in it than the maximum amount possible for a given tempera
    9·1 answer
  • How many atoms are in 2.5 moles of silver
    14·1 answer
  • An aqueous solution containing 6.06 g of lead(II) nitrate is added to an aqueous solution containing 6.58 g of potassium chlorid
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!