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chubhunter [2.5K]
3 years ago
13

How do I identify the ions present in K2HPO4?

Chemistry
1 answer:
ipn [44]3 years ago
4 0
In any compound there are two types of ions are present, cations and anions. Cations are positively charged ions and formed by losing electrons and anions are formed by gaining electrons and are negatively charged ions.
So, in K₂HPO₄, there are positive charged and negative charged ions are present. so there is K⁺ ion and HPO₄⁻² ion is present in K₂HPO₄
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Ammonia gas has a molar mass of approximately 17 grams per mole. At 290K and 1.2 atm, a sample of ammonia has a volume of 3.7 L.
jeka94

Ammonia gas will have a mass of 3.17grams.

HOW TO CALCULATE MASS:

  • The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass.

  • However, to calculate the number of moles present in the ammonia gas given in this question, we use the formula as follows:

  • PV = nRT

where;

  1. P = pressure (atm)
  2. V = volume (L)
  3. n = number of moles (mol)
  4. R = gas law constant
  5. T = temperature

n = PV ÷ RT

n = (1.2 × 3.7) ÷ (0.0821 × 290)

n = 4.44 ÷ 23.81

n = 0.186mol

  • Mass = 0.186 × 17

  • Mass of ammonia gas = 3.17g

  • Therefore, the mass of ammonia gas is 3.17grams.

Learn more at: brainly.com/question/21085277?referrer=searchResults

6 0
3 years ago
What is a limiting reagent?
prisoha [69]
It is the substance that is totally consumed when the chemical reaction is complete.
3 0
4 years ago
List and explain the four most important factors that control the relative reactivity of a carbonyl-containing functional group
ioda

Resonance, leaving group, carbonyl carbon delta+, and steric effect is the most crucial variables that affect the relative reactivity of a functional group containing a carbonyl in an addition or substitution process.

Discussion:

1. Carbonyl Carbon Delta+: The carbonyl group becomes more electrophilic and accelerates nucleophilic assault when the carbonyl carbon delta+ is bigger.

2. Resonance: When the carbonyl is transformed into the tetrahedral adduct, it may be lost. Loss of resonance increases the energy of the transition state for this nucleophilic assault because resonance has the function of stabilizing. Therefore, a carbonyl functional group's resistance to nucleophilic attack increases as resonance in the group increases in importance.

3. Leaving group: Tetrahedral adduct fragmentation is encouraged by a better LG.

4. Steric effects: The nucleophilic attack on carbonyl carbon is delayed when sterically impeded.

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brainly.com/question/21440134

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8 0
1 year ago
Find mass of 4.5 moles of co2​
Kobotan [32]

Answer:

198g

Explanation:

Molar Mass of CO2 = 12 + (2x16) = 12 + 32 = 44g/mol

Number of mole of CO2 = 4.5moles

Mass of CO2 =?

Mass = number of mole x molar Mass

Mass of CO2 = 4.5 x 44 = 198g

5 0
3 years ago
When does a cell grow in size
harkovskaia [24]

The increase in size and changes in shape of a developing organism depend on the increase in the number and size of cells that make up the individual. Increase in cell number occurs by a precise cellular reproductive mechanism called mitosis.

6 0
3 years ago
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