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raketka [301]
3 years ago
8

Soaps feel slippery on our hands because they dissolve the oil on our skin, decreasing friction.This is because soap contains

Chemistry
2 answers:
Burka [1]3 years ago
4 0
The best answer to this question is D.a base 
salantis [7]3 years ago
3 0

Answer:

The correct options is, a base.

Explanation:

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A student has a mixture of salt (NaCl) and sugar (C12H22O11). To determine the percentage, the student measures out 5.84 grams o
julsineya [31]

Answer:

The volume of 1.0 AgNO₃ that would be required to precipitate 5.84 grams of NaCl is 99.93 ml

Explanation:

Here we have the reaction of AgNO₃ and NaCl as follows;

AgNO₃(aq) + NaCl(aq)→ AgCl(s) + NaNO₃(aq)

Therefore, one mole of silver nitrate, AgNO₃, reacts with one mole of sodium chloride, NaCl, to produce one mole of silver choride, AgCl, and one mole of sodium nitrate, NaNO₃,

Therefore, since 5.84 grams of NaCl which is 58.44 g/mol, contains

Number \, of \, moles, n  = \frac{Mass}{Molar \ mass} =  \frac{5.84}{58.44} = 0.09993 \ moles \ of \ NaCl

0.09993 moles of NaCl will react with 0.09993 moles of AgNO₃

Also, as 1.0 M solution of AgNO₃ contains 1 mole per 1 liter or 1000 mL, therefore, the volume of AgNO₃ that will contain 0.09993 moles is given as follows;

0.09993 × 1 Liter/mole= 0.09993 L = 99.93 mL

Therefore, the volume of 1.0 AgNO₃ that would be required to precipitate 5.84 grams of NaCl is 99.93 ml.

3 0
4 years ago
Which hypothesis of Thomson's atomic model was later found to be not true by Niels Bohr and why?
Leto [7]

Answer:

In 1911, Rutherford showed that Thomson's model was "wrong": the distribution of positive and negative particles was not uniform. Rutherford showed that the atom contains a small, massive, positively charged nucleus. He also agreed with Nagaoka that the electrons move in circular orbits outside the nucleus

7 0
3 years ago
How many stereoisomers are possible for 2,4-heptadiene?
Korolek [52]

Answer:

Total of 4 isomers of hepta-2,4-diene are given

Explanation:

pls mark brainliest

hope this helps  <3

6 0
3 years ago
Authorities in the government have allowed use of coal for domestic and industrial purpose. What warming can you raise concernin
makvit [3.9K]

The dangers in the use of coal for domestic and industrial purpose include:

  • particulate emission
  • ground level ozone emission
  • formation of smog
  • formation of acid rain
  • greenhouse gas emission

<h3>What are the dangers of using coal for industrial and domestic purposes?</h3>

Coal is  a fossil fuel.

Fossil fuels are fuels which are obtained from the remains of dead plants and animals which under intense heat and pressure were converted the present forms in which they exist.

The dangers in the use of coal for domestic and industrial purpose include:

  • particulate emission- combustion of coal release fly ash particles into the atmosphere, which contribute to air pollution
  • ground level ozone emission
  • smog - the gases and particle released lead to formation of smog
  • acid rain - some gases released from the combustion of coal lead to the formation of acid rain
  • greenhouse gas emission such as carbon dioxide which contribute to global warming

In conclusion, the use of coal as energy source for industrial and domestic purposes results in dangers to the environment.

Learn more about coal use at: brainly.com/question/14457681

#SPJ1

4 0
2 years ago
Give one property that makes copper very useful for electrical wiring?
irakobra [83]
It is a conductor of electricity, so it allows electricity to pass through it.
6 0
3 years ago
Read 2 more answers
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