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Artemon [7]
3 years ago
5

Can you get molecules to stop wiggling??

Chemistry
1 answer:
lilavasa [31]3 years ago
5 0
No, molecules don’t ever stop moving
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How many moles is<br> 55 g of Naci?<br> 0.025 g of NaCO3?
mart [117]

Answer:

0.940mol &

0.000301mol respectively.

Explanation:

number of moles = given mass / molar mass

given mass of Nacl = 55g Molar mass = 23 + 35.5

n=m/M = 55g/58.5g/mol = 0.940mol

note- (add the atomic weights of sodium and chlorine to get the molar mass of Nacl.) = 58.5g/mol

similarly, NaCO3 = 23 + 12 + 16*3 = 83g/mol

n=m/M = 0.025g/83g/mol = 3.01 * 10^-4 = 0.000301mol

extra: If you ever get asked to put it in number of particles just use the relation of 1mole = 6.02 * 10^23 particles.

8 0
3 years ago
Will give brainly
kicyunya [14]

Answer:

Ch4 + 2O2 ----> CO2 + 2H2O

Explanation:

Ch4 has 4H, 1C

O2 has 2 O2

CO2 has 1 C, 2O

H2O has 1 H, 2O

you need to add 2 to O2 to balance it. Add 2 to H2O to balance the H and O

3 0
3 years ago
Consider the reaction and its rate law.
BaLLatris [955]

The order with respect to A is 2

The order with respect to B is 0.

The overall reaction order is 2.

<u>Explanation:</u>

The rate of chemical equation is represented by its rate equation. Here the rate equation of the given chemical reaction is

rate=k[B]^2

Here k represents the rate constant .

Order of the reaction with respect to its individual reactants is represented by the power of the the reactants in the rate equation.

Here the power of the reactant A is 0 and the power of reactant B is 2.

Hence the order with respect to A is 0 and order with respect to B is 2.

The overall order of the reaction is given by the sum of the powers of the reactants in the rate equation.

Hence the total order=2+0=2

4 0
3 years ago
What cycloalkanes are present in a steroid ?
11Alexandr11 [23.1K]
Steroids are biologically very important compounds. They are made up of more that seventeen carbons. The structure of Steroid is comprised of a fused cycloalkane ring system. The simplest steroid and the main skeleton of all steroids is Gonane.

Gonane is made up of four cycloalkane rings i.e. tetracyclic hydrocarbon ring structure. Among these four rings 3 are cyclohexanes (designated as A, B and C) and one is cyclopentane (Designated as D). These four rings fuse to form a <span>cyclopentaperhydrophenanthrene.

The Nucleus (Gonane) of steroids along with some derivatives are shown below,</span>

3 0
3 years ago
Which of the following statements best describes a limiting reactant?
sertanlavr [38]

Answer:

c. The reactant that is used up before the others  

Explanation:

b. is also correct, because the limiting reactant is completely used up.

a. and d. are wrong. They describe the excess reactant.

5 0
3 years ago
Read 2 more answers
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