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Vikki [24]
3 years ago
5

The amount of kinetic energy an object has depends on

Chemistry
2 answers:
Vladimir79 [104]3 years ago
7 0

it depends on the mass & speed of the moving object.^-^

Alex777 [14]3 years ago
3 0
How much it has to drop and how heavy it is. Hope this is what you're looking for:)
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The first step in the reaction of Alka–Seltzer with stomach acid consists of one mole of sodium bicarbonate (NaHCO3) reacting wi
Gnesinka [82]

Answer: 5 moles of  H_2CO_3 can be produced from 5 mol NaHCO3 and 9 mol HCl.

Explanation:

The balanced chemical reaction is:

NaHCO_3+HCl\rightarrow H_2CO_3+NaCl

According to stoichiometry :

1 mole of NaHCO_3 use 1 mole of HCl

Thus 5 moles of NaHCO_3 use=\frac{1}{1}\times 5=5moles  of HCl

Thus NaHCO_3 is the limiting reagent as it limits the formation of product and HCl is the excess reagent.

As 1 mole of NaHCO_3 give = 1 mole of H_2CO_3

Thus 5 moles of NaHCO_3 give =\frac{1}{1}\times 5=5moles  of H_2CO_3

5 moles of  H_2CO_3 can be produced from 5 mol NaHCO_3 and 9 mol HCl.

8 0
3 years ago
A biologist has two brine solutions, one containing 4% salt and another containing 16% salt. How many milliliters of each soluti
agasfer [191]

Answer:

400 mL of 4% salt solution and 600 mL of 16% salt solution need to be mixed

Explanation:

Let's assume concentration of brine salt solutions are in %(w/v) unit.

Final mixture has a concentration of 11.2% salt and volume of 1 L or 1000 mL

Hence, amount of salt in final mixture = \frac{11.2\times 1000}{100}g=112g

Suppose x mL of 4% salt solution and (1000-x) mL of 16% salt solution need to be mixed to get final mixture

So, amount of salt in x mL of 4% salt solution = \frac{4x}{100}g

      amount of salt in x mL of 16% salt solution =\frac{16\times (1000-x)}{100}g

Hence, \frac{4x}{100}+\frac{16\times (1000-x)}{100}=112

or, x=400

So, 400 mL of 4% salt solution and 600 mL of 16% salt solution need to be mixed

3 0
3 years ago
An increase in pressure increasing the billing point is an example of a-
AlekseyPX

An increase in pressure increasing the billing point is an example of a physical property.

  • The term "boiling point" describes the temperature at which a liquid, which is being boiled, changes from a liquid to a vapor when its pressure equals that of its environment.
  • Physical changes are those that take place when a material's structure is the same both before and after the change.
  • When a substance is changed into another chemical substance, this is known as chemical transformation.
  • When describing the state of a physical system, a substance's physical qualities are those that can be measured.
  • A substance's characteristic that is seen in a chemical reaction is referred to as a chemical property.

As it demonstrates the physical state, the increase in pressure with boiling point is an example of a physical property.

Learn more about boiling point:

brainly.com/question/25725550

The complete question is:

An increase in pressure increasing the boiling point of a liquid is an example of a —

A physical change

B chemical change

C physical property

D chemical property

#SPJ9

6 0
1 year ago
The nucleus makes up blank of the mass of an atom
goldfiish [28.3K]
The nucleus is the center of the atom where the protons and neutrons can be found.
8 0
3 years ago
Which term describes the sum of the number of protons and neutrons in an
romanna [79]

Answer:

Option B. mass number

Explanation:

The mass number of an element is simply the sum of protons and neutrons of the element. Mathematically, it is written as:

Mass number = Proton + Neutron

5 0
3 years ago
Read 2 more answers
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