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frosja888 [35]
2 years ago
6

PLS HELP ME

Chemistry
2 answers:
vaieri [72.5K]2 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]2 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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Explanation:

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A 155 g sample of an unknown substance was heated from 25°c to 40°c. in the process, the substance absorbed 569 calories of ener
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A sample of a compound is analyzed and found to contain 0.420 g nitrogen, 0.480g oxygen, 0.540 g carbon and 0.135 g hydrogen. Wh
RSB [31]

Answer:

C2H5NO

Explanation:

constituent elements                    N              O               C                H

Mass composition                     0.420        0.480         0.540         0.135

mole ratio                                   0.42/14       0.48/16      0.54/12         0.135/1

                                              = 0.03                0.03             0.045         0.135

dividing by the smallest           0.03/0.03     0.03/0.03    0.045/0.03 0.135/0.03

ratio                                      =        1                      1                1.5                 4.5

                                             =        1                      1                  2                   5

EMPERICAL FORMULA = C2H5NO

7 0
2 years ago
Using the balanced equation for the combustion of ethane: 2C2H6 + 7O2 → 4CO2 + 6H2O, how many moles of O2 needed to produce 12 m
pickupchik [31]

Answer:

14 moles of oxygen needed to produce 12 moles of H2O.

Explanation:

We are given that balance eqaution

2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O

We have to find number of moles of O2 needed  to produce 12 moles of H2O.

From given equation

We can see that

6 moles of   H2O produced by Oxygen =7 moles

1 mole of   H2O produced by Oxygen=\frac{7}{6}moles

12 moles of H2O produced by Oxygen=\frac{7}{6}\times 12moles

12 moles of H2O produced by Oxygen=7\times 2moles

12 moles of H2O produced by Oxygen=14 moles

Hence, 14 moles of oxygen needed to produce 12 moles of H2O.

3 0
2 years ago
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S_A_V [24]

Answer:

ESTA!!!!1

Explanation:

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