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IRISSAK [1]
3 years ago
10

Both of the sulfur-oxygen double bonds in so2 are polar. in which direction should the polarity arrows point?

Chemistry
1 answer:
LiRa [457]3 years ago
8 0

Answer is: the polarity arrows should go from sulfur (S) to the oxygen (O).

The magnitude of the dipole depends on the difference in the electronegativies and has direction from positively charged atom to negatively charged atom.

Oxygen has greater electronegativity than sulfur, because of that oxygen (χ=3.5) is partially negative and sulfur (χ=2.5) is partially positive.

Electronegativity (χ) is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

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A student measures the mass of a substance as 1.7132kg and it's volume as 0.65l. What is the density substance in g/mL? Round yo
Anna007 [38]

Answer:

The substance has a density of 2.636 grams per mililiter.

Explanation:

We must remember that density (\rho), measured in grams per mililiters, is the mass of the substance (m), measured in grams, divided by its volume (V), measured in mililiters. That is:

\rho = \frac{m}{V}

In addition, a kilogram equals 1000 grams and a liter equals 1000 mililiters. If we know that m = 1713.2\,g and V = 650\,mL, then:

\rho = \frac{1713.2\,g}{650\,mL}

\rho = 2.636\,\frac{g}{mL}

The substance has a density of 2.636 grams per mililiter.

6 0
4 years ago
Type the correct answer in the box. Express your answer to three significant figures.
Shkiper50 [21]

Answer: Theoretical mass of sodium sulphate ( Na_2SO_4 ) is 514.118 grams.

Explanation: For a given reaction,

2NaOH(aq.)+H_2SO_4(aq.)\rightarrow Na_2SO_4(s)+2H_2O(l)

As NaOH is used in excess, therefore it is an excess reagent and H_2SO_4 is a limiting reagent as the quantity of the product will depend on it.

We are given 355 grams of H_2SO_4.

Molar mass of H_2SO_4 = 98.079 g/mol

Molar mass of Na_2SO_4 = 142.04 g/mol

1 mole of H_2SO_4 is producing 1 mole of Na_2SO_4, so

98.079 g/mol of  H_2SO_4 will produce 142.04 g/mol of Na_2SO_4

355 grams of H_2SO_4 will produce = 142.04g/mol \times \frac{355g}{98.079g/mol} of Na_2SO_4

Mass of Na_2SO_4 = 514.118 grams


3 0
4 years ago
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3 years ago
True or false:The nucleus is the largest part of the atom and takes up most space
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It has the most mass. but the electron cloud takes up the most space.
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3 years ago
How can you distinguish between a solution, colloid, and suspension?
RSB [31]

Answer:

solution is clear solution while colloidal is between the solution and suspension. And in suspension particles are suspended.

Explanation:

In solution light can be passed without any scattering of light from solute particles while suspension is cloudy and having larger particle size than colloids, if suspension stands for a while particles will settle down easily.

In colloids light  will scattered and dispersed by reflecting with large particles.

3 0
3 years ago
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