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
slava [35]
3 years ago
9

We can drink water straight from the ocean without purifying it. True False

Chemistry
2 answers:
xenn [34]3 years ago
7 0

False. The water would be toxic without purifying it before drinking.

natima [27]3 years ago
3 0
False just common sense.
You might be interested in
Please, I need help with this problem.
alexgriva [62]
انا عندي عندي في البيت عندي شغل في
3 0
2 years ago
28 Which compound yields H + ions as the only positive ions in an aqueous solution?
MrMuchimi

Answer: (4) CH_3COOH

Explanation:-

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions (OH^-) when dissolved in water and an acid is defined as a substance which donates hydronium ions (H_3O^+) in water.

1. KOH is a strong electrolyte and thus dissociate in water.KOH\rightarrow K^++OH^-

2. CH_3OH is a non electrolyte and thus do no dissociate in water.

CH_3COOH\rightarrow no reaction

3. NaOH is a strong electrolyte and thus dissociate in water.

NaOH\rightarrow Na^++OH^-

4. CH_3COOH is a weak electrolyte and thus partially dissociate in water.

CH_3COOH\rightleftharpoons CH_3COO^-+H^+

4 0
3 years ago
Why must the line of origin be drawn in pencil instead of pen on the chromatography strip?
Kruka [31]

Answer:

Because if you use pen, your chromatography will separate also the colors of the pen and not just your sample.

Explanation:

The pencil since is carbon as simple element, is solid and is not dissolved in solvents like commonly are used in paper chromatography, it will not interrupt the separation of the compounds in your mixture, otherwise, your results will be confuse because you are not sure if the spots that you observe is due to the ink pen or due to the mixture that you want to separate.

5 0
3 years ago
In the chemical reaction below, calcium (Ca) and water (H2O) react to form calcium hydroxide (Ca(OH)2) and hydrogen gas (H2).
shtirl [24]
C
because the mass never changes, it is always equal on both sides.
5 0
3 years ago
0.200 grams of HCl is dissolved in 0.801 grams water. The density of the solution formed is 1.10 g/mL. What is the molarity of t
alina1380 [7]

Answer:

M=6.03M

Explanation:

Hello,

In this case, since the molarity is computed by:

M=\frac{n_{solute}}{V_{solution}}

Whereas the solute is the hydrochloric acid, we compute the corresponding moles with its molar mass (36.45 g/mol):

n_{solute}=0.200gHCl*\frac{1molHCl}{36.45gHCl} =0.00549molHCl

Next, since the solution contains both HCl and water, we compute the volume in liters by using its density:

V_{solution}=(0.200+0.801)g*\frac{1mL}{1.10g} *\frac{1L}{1000mL} =9.1x10^{-4}L

Therefore, the molarity turns out:

M=\frac{0.00549mol}{9.1x10^{-4}L}\\ \\M=6.03M

Regards.

6 0
3 years ago
Other questions:
  • Which element is least likely to undergo a chemical reaction?
    7·2 answers
  • What would it feel like to walk on the surface of the moon??
    12·2 answers
  • How are the different colors generated by the flames? A. proton transitions B. reactions between different atoms C. electronic t
    10·1 answer
  • A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree
    13·1 answer
  • A student completed a lab report. Which correctly describes the difference between the “Question” and “Hypothesis” sections of h
    6·2 answers
  • Molecules of 1-bromopropane and 2-bromopropane differ in
    6·2 answers
  • Descoberto em 1996 por pesquisadores alemães o novo elemento químico de numero 112 poderá ser batizado de copernicium em homenag
    11·1 answer
  • How do you test for carbon dioxide ?? Explain
    11·1 answer
  • Which phrase related to electromagnetism applies only to electric force? A. Attraction and repulsion B. North and south C. Push
    8·1 answer
  • He nitrogen cycle is one of the most important (and complex!) of the biogeochemical cycles. Why is nitrogen important?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!