Recent activity by ConcettaMay3

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Calculate the standard enthalpy change for the reaction of dissolving 5.00 grams of NaOH in 100.0 mL of water at 25°C, given that the heat absorbed by the solution is 11.76 kJ. (Assume the density of water is 1.00 g/mL and the heat capacity of the solution is the same as that of water.)

answered Feb 3 in Chemical thermodynamics

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What is the amount of copper present in a 2-g copper wire using coulometry?

asked Jan 30 in Analytical Chemistry

1 answer 58 views

How can electrophoresis be used to identify the proteins present in a biological sample and determine their molecular weight?

answered Jan 29 in Analytical Chemistry

1 answer 46 views

Where did Susan Nolen-Hoeksema conduct her research on depression?

answered Jan 20 in Psychology

1 answer 11 views

According to the social learning theory, how do children learn aggressive behaviour?

asked Jan 15 in Psychology

1 answer 65 views

What is used to describe gas concentrations of a solution?

asked Jan 7 in Science

1 answer 18 views

What is the matter through which sound waves travel?

answered Jan 7 in Science

1 answer 23 views

What is another term for stored energy?

answered Jan 6 in Science

1 answer 23 views

What are hydrocarbons with double bonds called?

asked Jan 3 in Science

1 answer 9 views

The primary lymphoid organs are the bone marrow and what else?

asked Jan 2 in Science

1 answer 14 views

Root systems are mainly of two types. dicots have a tap root system, while monocots have a what?

asked Dec 31, 2024 in Science

1 answer 55 views

Planting a row of trees around a field or erecting a fence on a sand dune helps prevent what form of erosion?

answered Dec 31, 2024 in Science

1 answer 56 views

Inorganic chemistry refers to the study of materials *not* containing which element?

asked Dec 31, 2024 in Science

1 answer 26 views

Zeros that appear in front of all of the nonzero digits are called what?

asked Dec 27, 2024 in Science

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