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
masya89 [10]
2 years ago
6

Please help me thank you so much <3

Chemistry
2 answers:
aleksandr82 [10.1K]2 years ago
6 0

A i dolnt reaally know but yeh

mestny [16]2 years ago
5 0

Answer: B.

Explanation:

Onions are made of tons of small cells, while protists are unicellular, meaning that they only have one cell.

I hope this helps! :)

You might be interested in
Plz help me!! Let it be a good amount of presentation.
Svetllana [295]

Answer:

Read the article on Mine Tools called "Active Listening"

Explanation:

Ive used it before for assignments. Its pretty informative and only takes like 10 minutes to read

5 0
2 years ago
Is condensation of ethanol a physical change or a chemical change
tigry1 [53]

Answer: Physical change

Explanation: Condensation is the phase change of a gas to the liquid state. There is no formation of new products so it does not undergoes chemical change. Any phase change is considered a physical change.

7 0
3 years ago
Measurements show that the ph of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
fomenos

Answer: Hydrogen ion concentration of the lake is 10^{-4}M

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration. Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.

To calculate the pH of the solution, we use the equation:

pH=-\log[H^+]

We are given:

pH = 4.0

Putting values in above equation, we get:

4.0=-\log[H^+]

[H^+]=10^{-4.0}

[H^+]=10^{-4}

Thus hydrogen ion concentration of the lake is 10^{-4}M

6 0
3 years ago
Draw the mechanism for the acid-catalyzed reaction of acetic acid (ethanoic acid) with the methanol to yield methyl acetate (met
timama [110]

When ethanoic acid react with methanol in the presence of H⁺ or heat it gives methyl ethanoate and water.

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now write the chemical equation

CH₃COOH + CH₃OH ⇄ CH₃COOCH₃ + H₂O

Here

CH₃COOH is Ethanoic acid (Acetic acid)

CH₃OH is Methanol (Methyl Alcohol)

CH₃COOCH₃ is Methyl ethanoate (Methyl Acetate)

H₂O is water

Thus from the above conclusion we can say that When ethanoic acid react with methanol in the presence of H⁺ or heat it gives methyl ethanoate and water.

Learn more about the Balanced Chemical Equation here: brainly.com/question/26694427

#SPJ4

3 0
1 year ago
If aqueous solutions of sodium chloride and mercury(I) nitrate are mixed, which insoluble precipitate is formed?
NeX [460]

Answer:

Hg2^2+(aq) + 2Cl^-(aq) —> Hg2Cl2(s)

Explanation:

The balanced equation for the reaction is given below:

2NaCl(aq) + Hg2(NO3)2(aq) —> 2NaNO3(aq) + Hg2Cl2(s)

Considering the states of each compound in the reaction, we can see that Hg2Cl2 is in solid form meaning it will precipitate out of the solution

In solution the following occurs:

NaCl —> Na+(aq) + Cl-(aq)

Hg2(NO3)2 —> Hg2^2+(aq) + 2NO3^-(aq)

Combining the two equation together, a balanced double displacement reaction occurs as shown below:

2Na+(aq) + 2Cl-(aq) + Hg2^2+(aq) + 2NO3^-(aq) —> 2Na+2NO3^-(aq) + Hg2^2+2Cl-(s)

From the above we can thus right the insoluble precipitate as

Hg2^2+(aq) + 2Cl^-(aq) —> Hg2Cl2(s)

7 0
3 years ago
Other questions:
  • Which of the following is the best name for a compound made from calcium and bromine? (CaBr2) calcium bromide calcium dibromide
    8·1 answer
  • Consider the molecules: scl2, f2, cs2, cf4, and brcl. select the choice where the bonds of the molecules are arranged in order o
    12·1 answer
  • Suppose a container holds 1000 hydrogen molecules (H2) and 1000 oxygen molecules (O2) that react to form water. How many water m
    8·1 answer
  • Is density a chemical or physical property of a substance?
    5·1 answer
  • Select the keyword or phrase that will best complete each sentence.
    13·1 answer
  • 2 points
    8·1 answer
  • How many moles of gas occupy 98L at a pressure of 2.8atm and a temperature of 292k? and what law would you use?
    8·1 answer
  • 2. Calculate the density of a liquid in a beaker. The beaker has a mass of 15 grams when empty. The beaker plus an unknown liqui
    10·2 answers
  • if anyone has chemistry on edge and has the analyzing chemical reactions project can i please have your insta? i really need it.
    13·1 answer
  • (NEED ANSWER NOW)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!