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4 years ago

QUICKKKK THANKSSSSS!!!The following reaction shows calcium chloride reacting with silver nitrate.

Chemistry

1 answer:

weqwewe [10]4 years ago

8 0

Answer:

answer is 77.45grams you use stoichimetric formula by comparing CaCl2 and Agcl

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0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The label

cestrela7 [59]

Answer:

Chemical changes due to heat and pressure

Explanation:

Just took the test, hope this helps! :)

7 0

3 years ago

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The first energy shell around a nucleus can hold _______ electrons. The second energy shell can hold ________.

Bond [772]

Hi there,

I hope you and your family are staying safe and healthy!

The correct answer is C

Each shell can contain only a fixed number of electrons. The first energy shell around a nucleus can hold up to 2 electrons. Then the second shell can hold up to 8 eletrcons.

Please leave 5 stars and a like if you find this answer helpful!

Best,

~Gary

4 0

2 years ago

Protista are often grouped according to whether they are plant-like or fungus-like. What is another way they can be grouped? Bac

Gelneren [198K]

The right answer is animal-like.

Protists are unicellular living organisms about 0.1 mm in size, such as amoeba, paramecium and euglena.

Protists are a paraphyletic group in the phylogenetic classification. They were, in classical classification, the fourth reign of the domain of eukaryotes but they are currently defined by exclusion, that is to say that they are all eukaryotes belonging neither to mushrooms nor to plants or animals.

3 0

3 years ago

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100. mg of an unknown protein are dissolved in enough solvent to make 5.00mL of solution. The osmotic pressure of this solution

PolarNik [594]

<u>Answer:</u> The molar mass of the unknown protein is 6387.9 g/mol

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

or,

$\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT$

where,

$\pi$ = osmotic pressure of the solution = 0.0766 atm

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of protein = 100. mg = 0.100 g (Conversion factor: 1 g = 1000 mg)

Molar mass of protein = ?

Volume of solution = 5.00 mL

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = temperature of the solution = $25^oC=[25+273]K=298K$

Putting values in above equation, we get:

$0.0766atm=1\times \frac{0.100\times 1000}{\text{Molar mass of protein}\times 5}\times 0.0821\text{ L. atm }mol^{-1}K^{-1}\times 298K\\\\\pi=\frac{1\times 0.100\times 1000\times 0.0821\times 298}{0.0766\times 5}=6387.9g/mol$

Hence, the molar mass of the unknown protein is 6387.9 g/mol

5 0

4 years ago

Which of the following is an example of a saturated hydrocarbon?

MakcuM [25]

C. Ethyne. Hope this helped :)

4 0

3 years ago

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