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kondaur [170]
3 years ago
14

Which one of the following substances is a liquid fuel used in rocket engines?

Chemistry
2 answers:
Liula [17]3 years ago
8 0
The answer is A. Liquid Oxygen

katovenus [111]3 years ago
6 0
The best answer among the following choices would be the first option A).
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What physical meaning is attributed to ψ², the square of the wave function?
Zigmanuir [339]

Answer:

The probability density (ψ2)

Explanation:

Indicates the probability of finding the electron in a certain region of space when it is squared ψ2.

This means that define2 defines the distribution of electronic density around the nucleus in three-dimensional space; a high density represents a high probability of locating the electron and vice versa.

The atomic orbital, can be considered as the electron wave function of an atom.

APPLICATIONS:

1.- Specify the possible energy states that the electron of the hydrogen atom can occupy and identify the corresponding wave functions medio, by means of a set of quantum numbers, with which an understandable model of the hydrogen atom can be constructed.

2.- It does not work for atoms that have more than one electron, but the problem is solved using approximation methods for polyelectronic atoms.

3 0
3 years ago
Calculate the rate speed per drop in minute when applying a drip of 1000mg to last 4 2 hours​
Mnenie [13.5K]

Answer:

42 hours is 2520 minutes...

If 1000 mg drops in 2520 minutes,

Then in 1 minute, (1000/2520) drop drops...

Which is approximately 0.40 drops.

4 0
3 years ago
Mg(s) + ½O2(g) → MgO(s) + 146 kcal/mole H2(g) + ½O2(g) → H2O(g), ΔH = -57.82 kcal/mole What type of reaction is represented by t
adell [148]
Answer is: both reactions are exothermic.

<span>In exothermic reactions, heat is released and enthalpy of reaction is less than zero (as it show second chemical reaction).
According to Le Chatelier's principle when the reaction is <span>exothermic heat is included as a product (as it show first chemical reaction).</span></span>
7 0
4 years ago
Elements in group 2 are called alkaine earthmetals what is most similar about alkaline earth metals
andreev551 [17]
Shiny
Somewhat reactive
Standard temp. and pressure
6 0
3 years ago
Read 2 more answers
What is a percent volume of ethanol c2h60 in the final solution when 85 ml of it is diluted to a volume?
Ilya [14]
34% I believe

Hope this helps!
STSN
3 0
3 years ago
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