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3 years ago

A mixture is made by combining 1.62 lb of salt and 5.20 lb of water.

Chemistry

1 answer:

Galina-37 [17]3 years ago

7 0

Answer:

oof idk I would suggest looking at an example and try going off that

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Given one mole of each substance, which of the following will produce the FEWEST particles in aqueous solution? 1. sodium nitrat

svlad2 [7]

Answer: The substance that produces fewest particles is $CH_2Cl_2$

Explanation:

Ionization reaction is defined as the reaction in which an ionic compound dissociates into its ions when dissolved in aqueous solution.

Covalent compounds do not dissociate into ions when dissolved in aqueous solution.

For the given options:

Option 1: Sodium nitrate

The chemical formula of sodium nitrate is $NaNO_3$

The ionization reaction for the given compound follows:

$NaNO_3(aq.)\rightarrow Na^+(aq.)+NO_3^-(aq.)$

This produces in total of 2 ions.

Option 2: $CH_2Cl_2$

The given compound is a covalent compound and do not dissociate into its ions. It remains as such as a single unit.

Option 3: $K_2SO_4$

The chemical name for the given compound is potassium sulfate.

The ionization reaction for the given compound follows:

$K_2SO_4(aq.)\rightarrow 2K^+(aq.)+SO_4^{2-}(aq.)$

This produces in total of 3 ions.

Option 4: Sodium phosphate

The chemical formula of sodium phosphate is $Na_3PO_4$

The ionization reaction for the given compound follows:

$Na_3PO_4(aq.)\rightarrow 3Na^+(aq.)+PO_4^{3-}(aq.)$

This produces in total of 4 ions.

Hence, the substance that produces fewest particles is $CH_2Cl_2$

3 0

3 years ago

Calcium hypochlorite (ca(ocl)2, mw = 142.983 g/mol) is often used as the source of the hypochlorite ion (ocl–, mw = 51.452 g/mol

stiv31 [10]

When the concentration is expressed in ppm, that means parts per million. It is also equivalent to mg/L. For this problem, we do stoichiometric calculations. We manipulate the units by cancelling like units if they appear in the numerator and denominator side until we come with the amount of solid Ca(OCl)2 needed. The solution is as follows:

40 mg/L * (1 L/1000 mL) * 50 mL * (1 g/1000 mg) * (1 mol OCl⁻/51.452 g) * (1 mol Ca(OCl)₂/ 2 mol OCl⁻) * (142.983 g Ca(OCl)₂/mol) * 0.95 = 2.64×10⁻3 g or 2.64 mg.

Therefore, you would need 2.64 mg of solid Ca(OCl)₂.

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4 years ago

Which scientist is credited with developing the fist scientific atomic theory

Norma-Jean [14]

Answer:

German chemist G.E. Stahl

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3 years ago

If you have a sample of honey that has a mass of 20 grams what is the volume

tino4ka555 [31]

Not enough information to find the volume, unless the density of the substance was given or some container of honey with a measure in centimeters cube.

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4 years ago

What is one way humans can preserve biodiversity

goldenfox [79]

Answer:

Reducing the amount of water you use, by having a 5-minute shower or not running the water when washing up the dishes, can help protect vital wetlands. Plant scientists are also working to help conserve by developing crop varieties that use less water.

Explanation:

5 0

3 years ago