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kondor19780726 [428]
2 years ago
15

The modern periodic table is organized by increasing ______________ ___________.

Chemistry
2 answers:
professor190 [17]2 years ago
5 0

Answer:

atomic number.

Explanation:

maksim [4K]2 years ago
5 0

Answer:

Atomic number

Explanation:

The modern periodic table lists the elements in order of increasing atomic number (the number of protons in the nucleus of an atom).

<u><em>PLS MARK BRAINLIEST</em></u>

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Nadya [2.5K]

Answer:16km/hr

Explanation:

48km/3hr= 16km/hr

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Consider the following system at equilibrium:A(aq)+B(aq) &lt;---&gt; 2C(aq)Classify each of the following actions by whether it
velikii [3]

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

  • On addition of reactant at equilibrium shifts the equilibrium in forward direction.
  • On addition of product at equilibrium shifts the equilibrium in backward direction.
  • On removal of reactant at equilibrium shifts the equilibrium in backward direction.
  • On removal of product at equilibrium shifts the equilibrium in forward direction.

A(aq)+B(aq)\rightleftharpoons 2C(aq)

Reactants = A , B

Product = C

1. Increase A

On increasing the amount of A at equilibrium will shift the equilibrium in forward or rightward direction.

2. Increase B

On increasing the amount of B at equilibrium will shift the equilibrium in forward or rightward direction.

3. Increase C

On increasing the amount of C at equilibrium will shift the equilibrium in backward or leftward direction.

4. Decease A

On decreasing the amount of A at equilibrium will shift the equilibrium in backward or leftward direction.

5. Decease B

On decreasing the amount of B at equilibrium will shift the equilibrium in backward or leftward direction.

6. Decease C

On decreasing the amount of C at equilibrium will shift the equilibrium in forward or rightward direction.

7. Double A and Halve B

Equilibrium constant of the reaction = K

K=\frac{[C]^2}{[A][B]}

On doubling A and halving B, equilibrium constant of the reaction = K'

K'=\frac{[C]^2}{[2A][\frac{B}{2}]}=\frac{[C]^2}{[A][B]}

The value of equilibrium constant K' is equal to K, which means that equilibrium will not shift in any direction.

8. Double both B and C

Equilibrium constant of the reaction = K

K=\frac{[C]^2}{[A][B]}

On doubling B and C, equilibrium constant of the reaction = K'

K'=\frac{[2C]^2}{[A][2B]}=\frac{4[C]^2}{[A][2B]}=\frac{2[C]^2}{[A][B]}

K' = 2 K

The value of equilibrium constant K' is double the K, which means that product is increasing which means that equilibrium will shift in backward or leftward direction.

5 0
3 years ago
Has an asteroid hit Earth in the past
Brrunno [24]

Yes

Explanation:

On 15 February 2013, an asteroid entered Earth's atmosphere over Russia as a fireball and exploded above the city of Chelyabinsk during its passage through the Ural Mountains region.

6 0
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Which sample of HCl reacts at the fastest rate with a 1.0 - gram sample of iron filling
allsm [11]

Question:

The options are;

a. 10. mL of 1 M HCl(aq) at 10.oC

b. 10. mL of 1 M HCl(aq) at 25oC

c. 10. mL of 3 M HCl(aq) at 10.oC

d. 10. mL of 3 M HCl(aq) at 25oC

Answer:

The correct option is;

d. 10 mL of 3 M HCl(aq) at 25 °C

Explanation:

Factors that influence the rate of the reaction include;

Concentration and

Temperature

Concentration

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Temperature

When the temperature of the reacting HCl is increased, the energy within the reacting system increases leading to an increase in the number of high energy collisions which results in an increased reaction rate, therefore, HCl at 25 °C will react faster than HCl at 10 °C.

Hence the correct option is 10 mL of 3 M HCl(aq) at 25 °C.

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Components of the Skeletal System. The skeletal system is composed of four main fibrous and mineralized connective tissues : bones, ligaments, tendons, and joints. Bone: A rigid form of connective tissue that is part of the skeletal system of vertebrates and is composed principally of calcium.

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