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tresset_1 [31]
4 years ago
8

The moon cannot be seen during which phase?

Chemistry
2 answers:
ycow [4]4 years ago
8 0
New moon is the phase in which it cannot be seen
Andrews [41]4 years ago
3 0
New Moon. The Moon's unilluminated side is facing the Earth. The Moon is not visible except during a solar eclipse. The lighted side of the Moon faces away from the Earth. This means that the Sun, Earth, and Moon are almost in a straight line, with the Moon in between the Sun and the Earth.
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Word equation of nitrogen + oxygen —--> ammonia
katrin [286]

Answer:

it is ammonia nitro oxide

5 0
3 years ago
Read 2 more answers
For the reaction ag2s(s) ⇌ 2 ag+ (aq) + s2- (aq), keq = 2.4 × 10-4 and the equilibrium concentration of silver ion is [ag+] = 2.
Juliette [100K]

Answer : The concentration of silver ion is, 3.8\times 10^{-3}M

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

Ag_2S(s)\rightleftharpoons 2Ag^+(aq)+S^{2-}(aq)

The expression of K will be,

K_{eq}=[Ag^+]^2[S^{2-}]

2.4\times 10^{-4}=(2.5\times 110^{-1})^2[S^{2-}]

[S^{2-}]=3.8\times 10^{-3}M

Therefore, the concentration of silver ion is, 3.8\times 10^{-3}M

4 0
3 years ago
Read 2 more answers
How many moles of NaCl will react completely with 18.5 L F2 gas at 300.0 K and 1.00 atm?
meriva
Hello!

Data:

P (pressure) = 1 atm
V (volume) = 18.5 L
T (temperature) = 300 K
n (number of mols) = ? (in mol)
R (Gas constant) = 0.082 (atm*L/mol*K)

Apply the data to the Clapeyron equation (ideal gas equation), see:
P*V = n*R*T

1*18.5 = n*0.082*300

18.5 = 24.6n

24.6n = 18.5

n =  \dfrac{18.5}{24.6}

\boxed{\boxed{n \approx 0,752\:mol}}\end{array}}\qquad\checkmark

Note: If the feedback is to be considered, the closest response is 0.751 mol Nacl

_________________
_________________

I hope this helps. =)


3 0
3 years ago
1.)What is a chemical reaction?
harina [27]
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Photosynthesis is an example from daily life
4 0
4 years ago
Suppose that a bar magnet is suspended by a string a few millimeters above another bar magnet. If the north pole of the bottom m
OLga [1]
The pole varies in position on a yearly basis due to secular variation (or drift in Earth's magnetic field). Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
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