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Ilia_Sergeevich [38]
3 years ago
11

Help with my science for brainiest:)

Chemistry
1 answer:
zimovet [89]3 years ago
3 0

Answer:

Hereeeee

Explanation:

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When a very electronegative atom strips a valence electron away from its partner, __________ form?
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A very electronegative atoms has a strong ability of attracting electrons towards itself. As a result, it would gain electrons more than it usually has. Therefore, it would form an anion, or a negatively charge ion. These ions readily accepts electrons from the valence of other elements.
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While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per lite
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You would spend <em>$71.32</em> per week on gas.

<em>Step 1</em>. Convert <em>weeks to days </em>

Time = 1 wk × (7 days/1 wk) = 7 days

<em>Step 2</em>. Calculate the <em>distance</em> travelled

Distance = 7days × 125 km/day = 875 km

<em>Step 3</em>. Convert <em>kilometres to miles </em>

Distance = 875 km × (1 mi/1.609 km) = 543.8 mi

<em>Step 4</em>. Calculate the <em>gallons of gas </em>

<em>V</em> = 543.8 mi × (1 gal/40.0 mi) = 13.60 gal

<em>Step 5</em>. Convert <em>gallons to litres</em>

<em>V</em> = 13.60 US gal × (3.785 L/1 US gal) = 51.46 L

<em>Step 6</em>. Calculate the <em>cost of the gas</em>

Cost = 51.46 L × (€1.10/1 L) = €56.60

<em>Step 7</em>. Convert <em>euros to dollars</em>

Cost = €56.60 × ($1.26/€1) = <em>$71.32 </em>

6 0
3 years ago
Describe how you would prepare 500.0mL of an aqueous solution that is 30.0% isopropyl alcohol by volume
Artyom0805 [142]

Answer:

The solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.

Explanation:

∵ The volume% of a solution = [(volume of the solute(isopropy)/(volume of the solution)] x 100.

The volume % = 30.0%, volume of the solution = 500.0 mL.

∴ Volume of the solute = (the volume% of a solution)(volume of the solution)/100 = (30.0%)(500.0 mL)/100 = 150.0 mL.

∵ The volume of solution = volume of the solute + volume of water

∴ Volume of water = volume of the solution - volume of the solute = (500.0 mL) - (350.0 mL) = 150.0 mL.

  • <em>So, the solution can be prepared by adding 150.0 mL of isopropyl alcohol to 350.0 mL of water to make 30.0% isopropyl alcohol aqueous solution.</em>
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