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2 years ago

Write any three acids which are used in our daily life. Also, write an application of each

Chemistry

1 answer:

lidiya [134]2 years ago

3 0

Sodium fluoride- to brush teeth
Citric acid- orange juice for breakfast
Sodium hydroxide- cleaning agent

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A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of the report has been copied in

Vladimir79 [104]

Answer:

Explanation:

Considering question A

Mass of original sample is $m_o = 0.945 \ g$

Mass of NH4Cl is $m_n = 0.116 \ g$

Percent of NH4Cl is $k = 12.275 \%$

Mass of NaCl $m_k = 0.359 \ g$

Mass of SiO2 $m_e = 0.46$

Mass of original sample $m_o = 0.945 \ g$

Differences in these weights (g) (use the absolute value of the difference)

recovery of matter $G = 0.01 \ g$

The correct option is C

From the question we are told that

The mass of evaporating dish on #1 is $m_1 = 38.646 \ g$

The mass of evaporating dish and original sample $m_2 = 39 591 \ g$

The mass of evaporating dish after subliming $NH_4Cl$ is $m_3 = 39.4750 \ g$

Generally the mass of the original sample is mathematically represented as

$m_o = m_2 - m_1$

=> $m_o = 39 591 - 38.646$

=> $m_o = 0.945 \ g$

Generally the mass of $NH_4Cl$ is mathematically represented as

$m_n = m_2 - m_3$

=> $m_n = 39 591 - 39.4750$

=> $m_n = 0.116 \ g$

The Percent $NaH_4 Cl (g)$

$k = \frac{ m_n}{m_o} *100$

=> $k = \frac{0.116 }{0.945} *100$

=> $k = 12.275 \%$

Considering question B

The mass of evaporating dish #2 is $m_g = 38700\ g$

The mass of watch glass is $m_a = 28 299 \ g$

The mass of evaporating dish #2, watch glass and NaCl $m_b = 67,355 \ g$

Generally the mass of NaCl is

$m_k = m_b -[m_g + m_a]$

=> $m_k = 67,355 -[38700 + 28 299]$

=> $m_k = 0.359 \ g$

Considering question C

The mass of evaporating dish is $m_p= 38.645$

The mass of evaporating dish and SiO2 $m_s = 39.105 \ g$

Generally the mass of SiO2 is mathematically represented as

$m_e = 39.105 - 38.645$

=> $m_e = 0.46$

Considering D

The mass of the original sample is $m_o = 0.945 \ g$

Generally the experimental mass recovered (NH_4Cl,NaCl, SiO2 ) is mathematically evaluated as

$M =0.116 + 0.46 + 0.359$

$M = 0.935 \ g$

Generally the differences in these weights (g) of recovery of matter is mathematically represented as.

$G =0.945- 0.935$

=> $G = 0.01 \ g$

While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the recovered mass to be lower.

6 0

2 years ago

2. The picture shows two magnets interacting

hodyreva [135]

Explanation:

The picture shows magnetic force between opposite ends is attractive.

6 0

3 years ago

How are fossils used in the scientific process to support or disprove hypothesis on the origin of life on earth

ella [17]

Answer:

Using radiometric dating they SUPPORT the hypothesis on the origin of life on Earth

Explanation:

A fossil is a preserved remnant of a living organism from the past, this fossilization can be achieved by many processes including carbonization, recrystallization, permineralization, etc. These fossils can be used to obtain different information about the past and the origin of life on earth, for example,<em> chemical fossils are a kind of fossil found in rocks and fuels like coal or petroleum, they represent one of the oldest kind of fossils found and through the use of radiometric dating, where carbon isotopes are measured, their existence implies the presence of life as early as 4.1 billion years ago.</em>

I hope you find this information useful and interesting! Good luck!

5 0

3 years ago

When heat is being transferred away from a substance, the resulting phase change graph is known as a ____ curve.

Elina [12.6K]

Collinf is answerrrrrr

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2 years ago

explain why the reaction between lead (II) nitrate and concentrated sulphuric (VI) acid starts and stops immediately?

Mariana [72]

Answer:

The reaction produces insoluble lead (II) sulphate which coats the surface of lead (II) nitrate [Pb(NO3)]

7 0

2 years ago

Write any three acids which are used in our daily life. Also, write an application of each​

Write any three acids which are used in our daily life. Also, write an application of each