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allochka39001 [22]
3 years ago
11

This happens in diffusion. Choose the correct answer(s)

Chemistry
1 answer:
svlad2 [7]3 years ago
8 0
The answer is d. particles move from an area of high concentration to low concentration.
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What formula results when Ca+2 and Br -1 ions bond?
olga nikolaevna [1]
CaBr2
Because of the criss cross method of switching the charges
3 0
3 years ago
what is the molar mass of nicotine (C10H14N2)? Question 6 options: 14.11 g/mol 28.02 g/mol C 120.1 g/mol 162.2 g/mol C
viva [34]

Answer:

162.2 g/mol

Explanation:

Molar mass is defined as the mass in 1 mole of the substance. It is calculated by adding the molar mass of the substituents each multiplied by the subscript they have in the formula.

Thus, To calculate molar mass of nicotine having formula, C_{10}H_{14}N_2

Molar mass of C = 12.0107 g/mol

Molar mass of H = 1.00784 g/mol

Molar mass of N = 14.0067 g/mol

Thus, molar mass of nicotine = 12.0107\times 10+1.00784\times 14+14.0067\times 2 = 162.2 g/mol

6 0
4 years ago
What element has 2 electrons in the 4s sub level?
ruslelena [56]

is the Calcium because the calcium in group two which group two has 2 electron and also calcium and Potassium 4s sub level group potassium has 1 electron. :)


4 0
3 years ago
A mixture in which particles are not evenly distributed and particles keep their unique properties.
lina2011 [118]
<h2>Answer : Option D) Heterogeneous mixture</h2><h3>Explanation : </h3>

A mixture in which particles are not evenly distributed and particles keep their unique properties are called as heterogeneous mixture.

Usually, in heterogeneous mixture the substances are not evenly distributed and they can be easily separated through any physical methods.  Also the components retains their original/unique properties in the mixture. It usually contains various particles from different substances that are not uniformly distributed throughout the mixture.

4 0
3 years ago
Read 2 more answers
In order to use the Ideal Gas Constant of 0.0821, what units must be used for volume, pressure, amount, and temperature?
IRINA_888 [86]

Answer:

The value becomes 0.0821 L-atm/K⁻¹-mol⁻¹.

Explanation:

The value of gas constant is 0.0821.

We know that, the ideal gas law is as follows :

PV=nRT\\\\R=\dfrac{PV}{nT}

Where

P is pressure

V is volume

T is temperature

In order to use the Ideal Gas Constant of 0.0821, the units are follows :

Volume = Litre (L)

Pressure = atm

Amount = mol⁻¹

Temperature = K⁻¹

So, the value becomes 0.0821 L-atm/K⁻¹-mol⁻¹.

5 0
3 years ago
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