How is the periodic table helpful in determining the types of bonds an element will form?

How do I solve this? please help and only respond with the answer/work. I will mark BRAINLIEST

Ulleksa [173]

Answer: I think the answer is 2.5 M.

Explanation: Formula: M = n/v

M= 10 mol / 4L

M= 2.5 M

4 0

3 years ago

Four students presented different analogies to describe the formation of an ionic bond.

Gennadij [26K]

The correct student would be student D since an ionic bond is made up of a metal and nonmetal where metals usually give electrons and nonmetals take.

7 0

4 years ago

Read 2 more answers

A sample of 85.5 g of tetraphosphorous decoxide (P4O10) reacts with 74.9 g of water to produce phosphoric acid (H3PO4) according

Black_prince [1.1K]

The limiting reactant here is P4O10 . The percent yield of the product is caculated as 33.3%.

<h3>What is the limiting reactant?</h3>

The limiting reactant is the reactant that is in a minute quantity.

Number of moles of P4O10 = 85.5 g/284 g/mol = 0.3 moles

Number of moles of H2O = 74.9 g / 18 g/mol = 4.2 moles

From the reaction equation;

1 mole of P4O10 reacts with 6 moles of H2O

x moles of P4O10 reacts with 4.2 moles of H2O

x = 0.7 moles

Hence, P4O10 is the limiting reactant.

1 mole of P4O10 yields 4 moles of H3PO4

0.3 moles of P4O10 yields

0.3 moles * 4/1 = 1.2 moles

Mass of the H3PO4 = 1.2 moles * 98 g/mol = 117.6 g

Percent yield = 39.2 g/117.6 g * 100/1 = 33.3 %

Learn more about limiting reactant:brainly.com/question/14225536

8 0

2 years ago

An imaginary planet was just discovered that has a similar environment to our planet Earth. All the chemistry is similar except

Lena [83]

Answer: $\Delta H_{rxn}=-4652$ kJ/mol

Explanation: In a reaction, a bond of a molecule can break or rearrange itself. When it happens, it absorb or release energy.

Bond Energy is the energy necessary to break or to make a particular bond, producing gaseous fragments at atmospheric temperature. This type of energy can be used to show how stable a compound is or how easy a bond can break.

Enthalpy of Reaction is the energy absorption or release at a constant temperature resulting from a chemical reaction.

To calculate the Enthalpy using bond energy, you have:

1) Write the balanced equation with all the all the reactants and products in gaseous form:

$C_{5}H_{12}_{(g)}+8O_{2}_{(g)}$ ⇒ $5CO_{2}_{(g)}+6H_{2}O_{(g)}$

2) Count each bond of each molecule from both sides, including double or triple bonding, if they exists:

Reactants:

$C_{5}H_{12}$ : 12 C-H

4 C-C

O₂ : 1 O=O

Products:

CO₂ : 2 C=O

H₂O : 2 H-O

3) From the balanced reaction, we there are 8 moles of oxygen gas, 5 moles of carbon dioxide and 6 moles of water, which has to be included when adding each side.

$\Sigma H_{reactants}=$ 12.257 + 4.370 + 8.490 = 8484

$\Sigma H_{products}=$ 5.2.740 + 6.2.478 = 13136

4) Calculate Enthalpy of Reaction by:

$\Delta H_{rxn}= \Sigma H_{reactants}-\Sigma H_{products}$

$\Delta H_{rxn}=8484-13136$

$\Delta H_{rxn}=-4652$

The enthalpy of reaction for the combustion of 1 mole of pentane on a just discovered imaginary planet is an exothermic process of magnitude $\Delta H_{rxn}=$ - 4652kJ/mol

8 0

3 years ago

An unknown solution has a pH of 6.8. Which of these chemicals is likely to increase the pH the most when added to the solution?

Ksenya-84 [330]

Answer:

A. NaOH.

Explanation:

The pH of the solution = 6.8.

The pH of the solution increases as the basicity of the solution increases.

The basicity of the solution will increase by adding bases that have the ability to produce OH⁻.

So, NaOH and NH₃ "bases" will increase the pH of the solution.

while, HCl and HNO₃ "acids" will increase the acidity of the solution, thus pH will decrease.

But, NaOH will increase the pH of the solution the most because it is dissociates completely to OH⁻ , while NH₃ is weakly ionized "does not dissociate completely".

So, NaOH will increase the pH the most when added to the solution.

3 0

3 years ago