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3 years ago

What is the chemical name of the compound K2SO4? Use the list of polyatomic ions and the periodic table to help you answer.

Chemistry

2 answers:

Inga [223]3 years ago

8 0

Answer: Option (B) is the correct answer.

Explanation:

The given compound is $K_{2}SO_{4}$ , that is, it contains potassium $(K^{+})$ and sulphate $(SO^{2-}_{4})$ ions.

Charge on a sulphate ion is -2 and charge on two potassium ions is +2. Therefore, according to cross multiplication method it results in the formation of $K_{2}SO_{4}$ .

Thus, we can conclude that chemical name of the compound is potassium sulfate.

Ket [755]3 years ago

6 0

potassium sulfate or A because K2 is potassium and SO4 is sulfate

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The density of a 1 milliter sample of water is 1 gram. express this density in milligrams per liter

sergeinik [125]

The correct answer is 1000 Kg/M³

Density of water =1-g/cm3.

We know 1- g= 10^-³ Kg

cm³ =(10^-2)³= 10^-6

Substituting we get

Density of water

= 1 x (1x10^-³)/10^-6 Kg/M³

= 1x10^3 = 1000 Kg/M³

<h3>what is density?</h3>

Density is the mass of a material substance per unit volume. Density is defined as d = M/V, where d represents density, M is mass, and V is volume. Density is generally measured in grammes per cubic centimetre. Water, for example, has a density of 1 gramme per cubic centimetre, but Earth has a density of 5.51 grammes per cubic centimetre. Density is sometimes measured in kilos per cubic metre (in metre-kilogram-second or SI units). The density of air, for example, is 1.2 kilogrammes per cubic metre. Textbooks and handbooks list the densities of common solids, liquids, and gases.

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2 years ago

a lithium atom has three protons three neutrons and three wletrons.what is the overall charge on this atom

CaHeK987 [17]

The overall charge is neutral as three electrons cancels out the 3 proton

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4 years ago

Calculate the moles of calcium oxalate formed from 5 grams of potassium oxalate (molar mass 184.24 g/mol) the mole mole ratio fr

Nataly_w [17]

5 g of potassium oxalate react to produce 0.03 moles of calcium oxalate.

Calcium oxalate (CaC₂O₄) is obtained by the reaction of 5 g of potassium oxalate (K₂C₂O₄).

We can calculate the moles of CaC₂O₄ obtained considering the following relationships.

The molar mass of K₂C₂O₄ is 184.24 g/mol.
The mole ratio of K₂C₂O₄ to CaC₂O₄ is 2:1.

$5 g K_2C_2O_4 \times \frac{1molK_2C_2O_4}{184.24gK_2C_2O_4} \times \frac{1molCaC_2O_4}{2molK_2C_2O_4} = 0.03molCaC_2O_4$

5 g of potassium oxalate react to produce 0.03 moles of calcium oxalate.

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3 years ago

Can magnetism create an electric flow<br> (a simple yes or no)

Anni [7]

Answer:

yes

Explanation:

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What prefix should be used to name a hydrocarbon that has a six-carbon parent chain?a.hex- b.meth- c.non- d.sept-

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4 years ago