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
Nikitich [7]
3 years ago
11

Potassium hydrogen phthalate, KHP, is used as a primary standard for determining the concentration of a solution of NaOH by titr

ation. If the KHP has not been dried before weighing, the calculated molarity of the NaOH would be
A) higher than the actual value, since water is included in the apparent mass of KHP

B) higher than the actual value, since the presence of water requires a larger volume of titrant

C) lower than the actual value, since NaOH absorbs water

D) unaffected, since KHP is a strong acid

E) unaffected, since water is routinely added before the titration
Chemistry
1 answer:
prisoha [69]3 years ago
6 0

Answer:A

Explanation:

You might be interested in
Read the lab procedure for a controlled experiment that looks at the effect of heat on the circumference of bicycle tires.
gavmur [86]

The last step (step 5) in the experiment is to write a conclusion for the experiment. (Option B).

<h3>What is an experiment?</h3>

The essence of an experiment is to be able to establish a cause and effect relationship. It is only when we carry out a carefully controlled experiment that we can say that x causes y because the data would support our findings.

After, we have carried out an experiment, the next step is to put the evidences together and then try to arrive at a logical conclusion for the experimental procedure.

Thus the last step (step 5) in the experiment is to write a conclusion for the experiment. (Option B).

Learn more about experiment:brainly.com/question/11256472

#SPJ1

5 0
2 years ago
List the 4 cell structures from largest to smallest
Alex_Xolod [135]

Answer: The smallest structure is the double helix while the largest is the chromosome.

2. G2 phase is the third stage in cellular division wherein the cell prepares itself for the M phase.

3. Interphase comprises of 3 phases, namely, G1 phase, G2 phase, and S phase.

4. Metaphase is known to take less amount of time to complete.

Explanation:

1. The double helix of the DNA or deoxyribonucleic acid, nucleosome, coil, supercoil, and the chromosomes are all linked to the DNA and they vary in their sizes. The nucleosome is known to be the basic unit of the eukaryotic chromosome that is composed of DNA coiled around the histones. The supercoils and coils indicate to the structures which are derived from the folding as well as wrapping of the structure of the DNA. The chromosome refers to the thread-like structure which is made up of nucleic acid and is observed in the nucleus of the living organisms.

2. Cell cycle refers to the cellular division of the cell; it is the series of events which occurs within a cell that results in duplication of the DNA or deoxyribonucleic acid as well as division of the cytoplasm and other organelles in order to generate two daughter cells. This cycle comprises of 4 phases, namely, G1, S, G2, and M phase.

The cell enters the G1 phase wherein the cell synthesizes the proteins as well as mRNA or messenger ribonucleic acid in preparation for the next upcoming phases which lead to mitosis. Next stage is the S phase wherein the synthesis of DNA takes place.

G2 phase is the next phase wherein the cell prepares itself by allowing it to grow as well as generate new proteins needed for the next phase called M phase. Mitosis is the final stage wherein the two identical daughter cells are made from one parent cell.

3. The cell cycle is broadly segregated into 3 phases, namely, interphase, M phase, and cytokinesis. Interphase is the longest stage of the cellular cycle and it comprises of 3 phases, G1 phase, S, and G2 phase. There is a G0 phase or quiescent phase. During the G1 phase, the cell prepares itself for the next phases of cell cycle, S phase involves synthesis of DNA, and G2 is the production of new proteins needed for the M phase.

4. During the mitotic phase, the parental cell segregates and produces 2 identical daughter cells. This phase is further segregated into prophase followed by metaphase, anaphase, and finally telophase. During metaphase, the chromosomes align themselves onto the equatorial or metaphase plate and the centrosomes prepare to segregate the sister chromatids. This phase takes only about 4% of the time needed to finish the entire cell cycle.

Explanation:

8 0
3 years ago
How many atoms of hydrogen are in the compound 6(NH4)2CO3?
Vanyuwa [196]
I need points so if y’all wanna like my answer please
5 0
3 years ago
How many grams of IRON are<br><br> contained in a 245 gram sample<br><br> of Fe2O3?
nlexa [21]

Answer:

m_{Fe}=171.7gFe

Explanation:

Hello!

In this case, since we have 245 of iron (III) oxide, we first need to compute the moles contained there:

n_{Fe_2O_3}=245gFe_2O_3*\frac{1molFe_2O_3}{159.7gFe_2O_3} =1.54molFe_2O_3

Now, as 1 mole of iron (III) oxide is related to 2 moles of iron, due to iron's subscript in the molecule, we get the moles of iron itself:

n_{Fe}=1.54molFe_2O_3*\frac{2molFe}{1molFe_2O_3} =3.08molFe

And the mass is computed based on the atomic mass of iron:

m_{Fe}=3.08molFe*\frac{55.8gFe}{1molFe} \\\\m_{Fe}=171.7gFe

Best regards!

7 0
3 years ago
If potassium reacts so dangerously with water, and people are mostly made of water, why can we eat bananas without blowing up?
kogti [31]

Answer:

A banana, like most other lifeforms, is about 70% water, and all the potassium it contains already exists in the form of K+ ions dissolved in water. Which is why bananas do not explode in water, or spontaneously combust.

5 0
3 years ago
Other questions:
  • Calculate the heat required to convert 10g of water at 100 c to steam at 100 c the specific heat of water is 1.00 cal the heat o
    7·1 answer
  • What ketones would be formed from the acid-catalyzed hydration of 3-heptyne?
    12·1 answer
  • What is the relationship between the Kuiper Belt and the status of Pluto today?
    15·1 answer
  • The thin layer that separates a cells contents from the outside environment is the A.cell membrane b.nucleus c.cytoplasm D.endop
    14·1 answer
  • A pH of 15.0<br> a. is not possible.<br> b. is a base.<br> c. is an acid.<br> d. is a neutral.
    13·1 answer
  • A compound is made of 36.36% C, 7.13% H, 56.51% O. What is its empirical formula?
    10·1 answer
  • What is the molarity of the resulting solution when 300. mL of a 0.400 M solution is diluted to 800.
    9·2 answers
  • How many molecules of water of water are in a 821.3 g sample
    6·1 answer
  • Bo<br> A classroom warms up after<br> the students enter from PE
    11·1 answer
  • Choose the description that matches the law of included fragments.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!