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alexandr1967 [171]
3 years ago
12

Potassium iodide (ki) exhibits predominantly ionic bonding. the k and i ions have electron structures that are identical to whic

h two inert gases?
Chemistry
1 answer:
Ad libitum [116K]3 years ago
4 0
Inert gases are also called noble gases. They are the elements found in Group 8A in the periodic table. They are inert because they don't react with other elements. This is because they have the most stable electronic configuration. That's why elements form ions to gain or give way electrons so that they conform with the electronic configuration of the nearest inert gas. Basing on the periodic table, the nearest inert gas to K is Argon. The nearest inert gas to I is Xenon.
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How to write steam in chemical equations
GalinKa [24]

Answer:

How to write steam in chemical equations???

Chemical equations are symbolic descriptions of chemical reactions wherein the reactants and the products are represented in terms of their respective chemical equations. They often include the use of symbols to represent variables including the path of the reaction and the physical responses of the reacting entities.

The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation.

7 0
3 years ago
How many grams of AgNo3 are required to make 25 ml of .80M solution
Aleks [24]

Answer:

<u>3.39 grams </u>of AgNo3 are required to make 25 ml of .80M solution

Explanation:

Molarity , M = 0.80

Volume = 25 ml

=\frac{25}{1000} L

V = 0.025 L

molarity = \frac{moles}{Volume\ of\ solution(L)}

M=\frac{n}{V}

Here n = number of moles

n=M\times V

n=0.8\times 0.025

n = 0.02 mole

moles = \frac{given\ mass}{Molar\ mass}

Molar mass of AgNO3 = 169.87 g/mol

mass =\frac{n}{Molar\ mass}

mass=\frac{0.02}{169.87}

Mass = 3.397 g

8 0
4 years ago
Protons + Neutrons = the atomic ?
kolezko [41]

Answer:

The atomic mass number is the number of protons and neutrons in an atom.

7 0
3 years ago
In this task, you’ll observe a chemical reaction between baking soda and vinegar in water. write a hypothesis to predict the rel
Archy [21]

Answer:

Increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time)

Explanation:

The chemical reaction between baking soda and vinegar in water is shown in the chemical reaction equation below;

NaHCO3(aq) + CH3COOH(aq) ----->CO2(g) + H2O(l) + CH3COONa(aq)

The chemical name of baking soda is sodium bicarbonate (NaHCO3) while vineager is a dilute acetic acid (CH3COOH) solution. This reaction provides a very easy set up in which we can study the effect of concentration on the rate of chemical reaction.

We must have it behind our minds that increase in the concentration of reactant species increases the rate of chemical reaction. Secondly, the rate of the reaction between baking soda and vinegar can be monitored by observing the volume of CO2 evolved and how quickly it evolves from the reaction mixture.

We can now postulate a hypothesis which states that; 'increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time).'

If we go ahead to subject this hypothesis to experimental test, it will be confirmed to be true because a greater volume of CO2 will be evolved within a shorter time as the concentration of the reactants increases.

3 0
4 years ago
Help help help help help
givi [52]

Answer:

D. Up-Down

Explanation:

Hoped this helped you <\3

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