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gregori [183]
3 years ago
9

Calculate the molarity of Kool-Aid if each pack contains 4.5 g of powder, the molar mass of the Kool-aid is 90 g/mol, and it mak

es 2 liters of Kool-aid. SHOW ALL WORK TO RECEIVE CREDIT! *
5 points
Your answer
Chemistry
1 answer:
Mandarinka [93]3 years ago
5 0

Answer:

mol mean

Explanation:

sorry

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"A group of college students believes that herbal tea has remarkable restorative powers. To test their belief, they visit a loca
Georgia [21]

D) the college students

Explanation:

In the experiment conducted by staffs of the nursing home, the group of college students that came for the experiment are the subjects of the experiment. A subject is a person that participates in a research.

  • In this research, the college students are the human participants in the experiment.
  • There must be a mutual agreement between the researcher and the subject because the subject is one that is being tested to see an outcome.
  • A subject can quit a research if he/she deems it fit at any time.

Learn more:

Experiments brainly.com/question/5096428

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7 0
3 years ago
Which element comes from the greek word zinke?
Novay_Z [31]

Answer:

Zinc

The element was probably named by the alchemist Paracelsus after the German word Zinke (prong, tooth).

Explanation:

8 0
2 years ago
Read 2 more answers
What is the percent composition by mass of oxygen in Ca(NO3)2 (gram-formula= 164 g/mol)?
Neko [114]
To find this, we will use this formula:

Molar mass of element
------------------------------------ x 100
Molar mass of compound

So, first lets calculate the mass of the compound as a whole. We use the atomic masses on the periodic table to determine this.

Ca: 40.078 g/mol
N2 (there is two nitrogens): 28.014 g/mol
O6 (there are six nitrogens: 3 times 2): 95.994 g/mol

When we add all of those numbers up together, we get 164.086. That is the molar mass for the whole compound. However, we are trying to figure out what percent of the compound oxygen makes up. From the molar mass, we know that 95.994 of the 164.086 is oxygen. Lets plug those numbers into our equation!

95.994
-----------
164.086

When we divide those two numbers, we get .585. When we multiply that by 100, we get 58.5.

So, the percent compostition of oxygen in Ca(NO3)2, or, calcium nitrate, is 58.5%.
5 0
3 years ago
A. How many protons, electrons, and neutrons make up an atom
mestny [16]

Answer:

45 neutrons

Explanation:

Bromine has 35 protons and a mass number of 80. a) How many neutrons does the atom of bromine have? The mass number = protons + neutrons. Bromine has a mass number of 80 and 35 protons so 80-35 = 45 neutrons.

5 0
2 years ago
Which of these solids are most likely amorphous solids? Select all that apply. Rubber sugar plastic candle wax graphite glass.
Ostrovityanka [42]

The solids are characterized as amorphous and crystalline solids based on the arrangement of atoms. The solids that are amorphous are rubber, plastic, candle wax, and glass.

<h3>What are amorphous solids?</h3>

The solids have the arrangement of atoms in the lattice. The solids with an appropriate arrangement of atoms are crystalline solids. For example, sugar, graphite.

The solids with irregular arrangements of atoms in the lattice are amorphous solids. For example, glass, rubber.

Thus, the solids that are amorphous in nature are rubber, plastic, candle wax, and glass.

Learn more about amorphous solids, here:

brainly.com/question/4626187

3 0
2 years ago
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