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AlladinOne [14]
3 years ago
10

Beta particles will: 1. bend toward the North Pole of a magnet. 2 bend toward the South Pole of the magnet 3 not be affected by

either pole of a magnet
Chemistry
2 answers:
Setler79 [48]3 years ago
8 0
Beta particles will bend toward the South Pole of the magnet.

Hope this helped!
dimulka [17.4K]3 years ago
7 0

Answer:

The correct answer is option 3, that is, will not be affected by either pole of a magnet.

Explanation:

Beta particles refer to the electrons that comprise negative charge. The charge is not influenced by magnets, until and unless it is motion. If it is motion, then its electric current encounters with a force away or towards the magnets. In the question it is not mentioned that the beta particles are in motion, thus, we have to presume that they are just lying there, and thus beta particles will not be affected by either of the poles of a magnet.

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B

A qualitative observation describes the characteristics of a substance without quantifying them.
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Researchers used a combustion method to analyze a compound used as an antiknock additive in gasoline. A 9.394 mg sample of the c
LuckyWell [14K]

Answer:

The percent composition of the compound is 90.5 % C and 9.5 % H

Explanation:

Step 1: Data given

Mass of compound = 9.394 mg

Mass  of CO2 yielded = 31.154 mg

Mass of H2O yielded = 7.977 mg

Molar mass of CO2 = 44.01 g/mol

Molar mass of H2O = 18.02 g/mol

Step 2: Calculate moles CO2

moles of CO2 = (0.031154 g / 44.01 g/mol) = 7.08 * 10^-4 mol CO2

Step 3: Calculate moles C

moles of C = moles of CO2 * (1 mol C / 1 mol CO2)

moles of C = 7.08 * 10^-4 mol

Step 4: Calculate moles H2O

moles of H2O = (0.007977 g / 18.02 g/mol) = 4.43 * 10^-4 mol H2O

Step 5: Calculate moles of H

moles of H = moles of H2O * (2 mol H / 1 mol H2O)

moles of H =  4.43* 10^-4 *2 = 8.86 * 10^-4 mol H

Step 6: Calculate mass of C

mass C = moles C * molar mass C

mass C = 7.08 * 10^-4 mol*12.01 g/mol

mass C = 0.0085 grams

Step 7: Calculate mass of H

mass H = moles H * molar mass H

mass H = 8.86 * 10^-4 mol*1.01 g/mol

mass H = 0.000894 grams

Step 8: Calculate total mass of compound =

0.0085 grams + 0.000894 grams = 0.009394 grams = 9.394 mg

Step 9: Calculate the percent composition:  

% C = (8.50 mg / 9.394 mg) x 100 = 90.5%  

% H = (0.894 mg / 9.394 mg) x 100 = 9.5%

The percent composition of the compound is 90.5 % C and 9.5 % H

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3 years ago
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Pavlova-9 [17]

Explanation:

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B)role of nitrifying bacteria

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C)role of denitrifying bacteria

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8 0
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4 0
3 years ago
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