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GalinKa [24]
3 years ago
5

The Moon only emits light at night. True False - does not emit light at all

Chemistry
2 answers:
iogann1982 [59]3 years ago
6 0

Answer:

TRUE

Explanation:

Readme [11.4K]3 years ago
5 0

Answer:

It's trueeeeeee:))))))

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You do an experiment in which you need 0.5 mole of tyrosine (C9H11NO3) .
trasher [3.6K]

Answer:

90.5 g

Explanation:

we know 1 mole of thyrosine = 181g

so 0.5 mole thyrosine =181*0.5

                                      =90.5g

6 0
4 years ago
Read 2 more answers
1. Convert 421 °C to Kelvin
REY [17]

Answer:

a)694K

Explanation:

Kelvin=degrees+273

T=∅+273

T=421+273

=694K

5 0
3 years ago
What is the density of salt water?
mel-nik [20]
The density of salt water is 1.025 kg/liters .
6 0
3 years ago
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
Elina [12.6K]

The given question is incomplete, the complete question is:

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

A.

Their components can be distinguished visually.

B.

Their components are combined in a fixed ratio.

C.

Their components can be separated by physical processes.

D.

They always contain a liquid component.

E.

They are considered to be pure substances.

Answer:

The correct answer is option C, that is, their components can be separated by physical processes.

Explanation:

A combination of two or more substances in which no reaction or chemical combination takes place is termed as a mixture. On the other hand, the atoms of different elements that are combined chemically in a fixed ratio are termed as a compound.  

The mixtures, that is, whether homogenous or heterogeneous exhibits the tendency to get differentiated physically, on the other hand, compounds do not possess such a tendency. Like one can separate the mixture of alcohol and water by the process of distillation, as both the components exhibit distinct boiling points, that is, can be separated based on their physical characteristics.  

On the other hand, if one desires to distinguish oxygen and hydrogen from water, then there is a need to dissociate the bonds present between the molecules of hydrogen and oxygen, which is its chemical property, not physical characteristics.  

7 0
3 years ago
7.The equation below shows a process that occurs in all green plants.
pychu [463]

Answer:

Ⓓ The process follows the law of conservation of mass and energy is found in the product

Explanation:

This question depicts PHOTOSYNTHESIS, which is the process employed by green plants to manufacture their food in form of sugars (glucose). The general equation, which was given in the question is as follows:

6CO2 + 6H2O + energy → C6H12O6 + 6O2

This chemical reaction follows the LAW OF CONSERVATION OF MASS, which states that the amount of matter in reactant must equate that of the product. In this case, each element contains the same number of atoms in both reactant side and product side.

Also, energy is contained in the product but stored in the chemical bonds of the glucose molecule formed.

6 0
3 years ago
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