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AVprozaik [17]
3 years ago
10

Hich of these correctly defines the pOH of a solution?

Chemistry
2 answers:
kramer3 years ago
8 0
The log of the hydronium ion concentration
Arlecino [84]3 years ago
7 0

Answer:

pOH is the negative log of the hydroxide ion concentration.  

correct option is the 4th option. (D)

Explanation:

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33) How many significant figures does the number 40230 have? *
Lyrx [107]

Answer:

5

Explanation:

they are all significant All non-zero numbers ARE significant

4 0
3 years ago
Normal red blood cells slide easily through narrow blood vessels. In sickle cell disease, many red blood cells change to a cresc
dybincka [34]

Answer:

C. The child must have inherited sickle cell genes from both parents.

Explanation:

Because of the fact that sickle cell disease is recessive, the child would have to get the gene from both parents.

8 0
3 years ago
Read 2 more answers
What element forms an ion with an electronic configuration of [kr] and a –2 charge?
nekit [7.7K]
Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.
6 0
3 years ago
Read 2 more answers
2. If you have 8.08 g of hydrogen, how many grams of ammonia will your produce?
Nikolay [14]

answer: Stoichiometry is a big word for a process that chemist’s use to calculate

amounts in reactions. It makes use of the coefficient ratio set up by balanced

reaction equations to make connections between the reactants and products

in reactions.

 Stoichiometry calculates the quantities of reactants and products in a

chemical reaction. The equation must be balanced!

 Questions that deal with amounts in reactions are examples of reaction

stoichiometry. We already have the tools necessary to solve this question.

We just need to learn a new way to apply skills such as writing chemical

formulas, calculating formula masses, and converting from mass to moles,

particles to moles, and volume of gases to moles.

 Mole to Mole Conversions- you must have the Mole Ratio.

Illustration:

Let’s use an analogy that we can understand to begin to understand the process.

The KEY to any mole conversion is the ratio of coefficients in the reaction

equation. Say I want to make a bacon double cheeseburger. Let’s get our recipe

together.

1 hamburger bun + 2 hamburger patties + 2 slices of cheese + 4 strips of bacon →

1 bacon double cheeseburger

Based on this recipe:

1) If I have five bacon double cheeseburgers:

a. How many hamburger buns did you use? → 5 hamburger bun

b. How many hamburger patties did you use? → 10 hamburger patties

c. How many slices of cheese did you use? → 10 slices of cheese

d. How many strips of bacon did you use? → 20 strips of bacon

2) How many bacon double cheeseburgers can you make if you start with:

a. 2 buns, 4 patties, 4 slices of cheese, 8 strips of bacon

2 bacon double cheese burgers

b. 1 dozen buns, 2 dozen patties, 2 dozen slices of cheese, 4 dozen strips of bacon

1 dozen bacon double cheese burgers

7 0
3 years ago
Why did the food coloring separate into different dyes?
Dmitrij [34]

It is a mixture

Explanation:

Food coloring is able to separate into different dyes because it just a simple mixture of different color pigments.

Under a chromatogram the different colors will migrate relatively over an absorbent.

A mixture is an impure substance with the following properties:

  • composition is indefinite as they are made up of two or more elements or compounds in any proportion by mass.
  • They are able to retain their identities i.e physical properties are maintained.
  • Their constituents reacts differently to changed conditions.
  • They can easily be separated into constituent by physical methods.

learn more:

Heterogeneous mixtures brainly.com/question/1446244

#learnwithBrainly

7 0
3 years ago
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