3. What allows us to see the moon from Earth?

Chemistry

1 answer:

andriy [413]3 years ago

5 0

Answer:

the answer would be the B

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Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 200.ml of a 0.033 m hcl solution. w

Ede4ka [16]

HCl + NaHCO3 = NaCl + H2O + CO2

We have 0.033*0.2 = 0.0066 mol of Hcl

According to reaction we need the same amount of NaHCO3
M(NaHCO3) = 23+1+12+48=84g/mold
m = 0.0066mol * 84g/mol = 0.5544g

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3 years ago

How many grams are in 1.25 moles of Potassium hydroxide, KOH?<br><br>1 point

klasskru [66]

Answer:

There are 70 grams of KOH

Explanation:

First, we calculate the weight of 1 mol of KOH:

Weight 1 mol KOH: Weight K + Weight 0 + Weight H= 39g+ 1g+ 16g= 56 g/mol

1 mol-------56 g KOH

1,25 mol----x= (1,25 molx56 g KOH)/1 mol= <em>70 g KOH</em>

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4 years ago

Alteration of the physical form of a drug outside its label is

antiseptic1488 [7]

Alteration of the physical form of a drug outside its label is compounding
It is called compounding according to some sources.

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4 years ago

Which statement correctly describes a reaction in dynamic equilibrium? At dynamic equilibrium, the reactions stop and the amount

harkovskaia [24]

Answer:

At dynamic equilibrium, the reactions continue but the amounts of reactants and products do not change.

Explanation:

At dynamic equilibrium, the reactions continue but according to the law of conservation of mass, the amounts of reactants and products don't change.

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3 years ago

Read 2 more answers

Which is a characteristic of mixtures?

anygoal [31]

Answer: They can be separated by physical processes

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper $Cu$

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water $H_2O$

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present.they can be separated by physical processes. Example: salt in water. It can be separated by evaporation which is a physical process.

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3 years ago