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3 years ago

PLS HELP ME

Chemistry

2 answers:

vaieri [72.5K]3 years ago

8 0

Answer:

Explanation:

Alkaline are great for long-term use in a device, such as in a digital camera or game console remote. Carbon zinc batteries are ideal in a situation where one needs to power multiple devices for one occasion, such as when buying many toys during the Christmas season to be used for a few days.

zepelin [54]3 years ago

4 0

Answer:

The main difference between a zinc-carbon and alkaline batteries is the type of electrolyte. zinc-carbon batteries use ammonium chloride while alkaline batteries use potassium hydroxide. the components of each have different applications and better uses depending on the components. The benefits of Alkaline batteries include longer shelf life, and a higher energy density. These batteries will not lose energy from being unused for periods at a time. Panasonic alkaline batteries also have anti-leak protection so they are useful for items like toothbrushes, toys, and some game controllers. zinc batteries are useful for long periods of usage. They are used worldwide because they are affordable and have a low energy consumption. These are useful for fire alarms, smoke detectors, and televisions. Lastly, lithium ion batteries are some of the most frequently used batteries. they are used in devices like smartphones, earbuds/headphones, and cordless tools/appliances. lithium ion batteries are made of lightweight lithium and carbon. Lithium is a highly reactive element which means lots of energy can be stored in it's atomic bonds.

Explanation: all spell checked and credible sources, just make sure to change some wording so that the essays are not identical :) good luck y'all

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At a particular temperature, the solubility of He in water is 0.080 M when the partial pressure is 1.7 atm. What partial pressur

fenix001 [56]

At a particular temperature, the solubility of He in water is 0.080 M when the partial pressure is 1.7 atm. 4.25 atm is the partial pressure of He would give a solubility of 0.200 M.

<h3>What is Henry's Law ?</h3>

Henry's Law is a gas law states that at a constant temperature the amount of gas that dissolved in a liquid is directly proportional to the partial pressure of that gas.

<h3>What is relationship between Henry's Law constant and Solubility ?</h3>

The solubility of gas is directly proportional to partial pressure.

It is expressed as:

$S_{\text{gas}} = K_{H} P_{\text{gas}}$

where,

$S_{\text{gas}}$ = Solubility of gas

$K_{H}$ = Henry's Law constant

$P_{\text{gas}}$ = Partial pressure of gas

Now put the values in above expression we get

$S_{\text{gas}} = K_{H} P_{\text{gas}}$

0.080M = $K_{H}$ × 1.7 atm

$K_{H} = \frac{0.080\ M}{1.7\ \text{atm}}$

= 0.047 M/atm

Now we have to find the partial pressure of He

$S_{\text{gas}} = K_{H} P_{\text{gas}}$

0.200 M = 0.047 M/atm × $P_{\text{gas}}$

$P_{\text{gas}} = \frac{0.200 M}{0.047\ \text{M/atm}}$

= 4.25 atm

Thus from the above conclusion we can say that At a particular temperature, the solubility of He in water is 0.080 M when the partial pressure is 1.7 atm. 4.25 atm is the partial pressure of He would give a solubility of 0.200 M.

Learn more about the Henry's Law here: brainly.com/question/23204201

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A saturated solution of barium chloride at 30 degrees Celsius contains 150 g water. How much additional barium chloride can be d

Ksenya-84 [330]

Solubility of barium chloride at 30 degree Celsius is 38.2g /100 g water and solubility of barium chloride at 60 degree Celsius is 46.6 g / 100 g water.
The quantity of barium chloride that is dissolved in water at 30 degree Celsius = 38.2 * [150/100] = 57.30 g.
The quantity of barium chloride that will be dissolved in water at 60 degree Celsius = 46.6 * [150/100] = 69.90 g
The difference between these quantities is the amount of barium chloride that can be dissolved by heating the barium chloride to 60 degree Celsius.
69.90 - 57.30 = 12.60 g. Therefore, 12.60 g of barium chloride can still be dissolved in the water by heating the water to 60 degree Celsius.

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