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2 years ago

Which combination of ion charge and ion size produces the greatest lattice enthalpy?

Chemistry

1 answer:

mars1129 [50]2 years ago

7 0

The answer would be B) High Charge, small size. It is the combination of ion charge and ion size produced.

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Why are scientific method important in the study of science

Sergio [31]

Answer: The scientific method. When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.

Explanation:

6 0

2 years ago

The experiment above is repeated, but instead of extracting once with 6 mL the extraction is done three times with 2 mL of dichl

nevsk [136]

Complete Question

A student is extracting caffeine from water with dichloromethane. The K value is 4.6. If the student starts with a total of 40 mg of caffeine in 2 mL of water and extracts once with 6 mL of dichloromethane

The experiment above is repeated, but instead of extracting once with 6 mL the extraction is done three times with 2 mL of dichloromethane each time. How much caffeine will be in each dichloromethane extract?

Answer:

The mass of caffeine extracted is $P = 39.8 \ mg$

Explanation:

From the question above we are told that

The K value is $K = 4.6$

The mass of the caffeine is $m = 40 mg$

The volume of water is $V = 2 mL$

The volume of caffeine is $v_c = 2 mL$

The number of times the extraction was done is n = 3

Generally the mass of caffeine that will be extracted is

$P = m * [\frac{V}{K * v_c + V} ]^3$

substituting values

$P = 40 * [\frac{2}{4.6 * 2 + 2} ]^3$

$P = 39.8 \ mg$

6 0

3 years ago

Which of the following describes the stage that occurs after condensation in the water cycle?

NISA [10]

Answer:

Precipitation

Explanation:

There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let's look at each of these stages. Evaporation: This is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas).

5 0

2 years ago

Explain how the shorelines can affect the weather, in one to two sentences

defon

Answer:

Global warming causes sea-level rise as oceans expand, and makes storm patterns more energetic. Consequently it will affect most of the world's coastlines through inundation and increased erosion.

<h3>PLEASE MARK ME BRAINLIEST.</h3>

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2 years ago

What is #1 pointing to? a URNA b amino acid chain ribosome С d mRNA

Burka [1]

I farted it tickled my butt cheeks jingled it was hot it was squishy so I did it again

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2 years ago