Recent activity by WilfredoHunt

1 answer 48 views

Calculate the enthalpy change for the hydrolysis of sucrose given that 10.0 g of sucrose was completely hydrolyzed in excess water. The reaction takes place at 25°C and 1 atm pressure. The following reaction is involved: C12H22O11(s) + H2O(l) → 12C(s) + 11H2O(l) The enthalpy of formation of C12H22O11(s) is -2226.8 kJ/mol and the enthalpy of formation of H2O(l) is -285.8 kJ/mol.

answered Jan 23 in ThermoChemistry

1 answer 61 views

A chemistry student needs to determine the percentage of iron (Fe) present in a given iron ore sample using gravimetric analysis. The student is provided with the mass of the iron ore sample and a standardized solution of potassium dichromate (K2Cr2O7) to use for the analysis. What is the percentage of iron (Fe) in the given iron ore sample?

asked Jan 22 in Analytical Chemistry

1 answer 41 views

What is the difference between a parametric test and a nonparametric test?

answered Jan 20 in Psychology

1 answer 26 views

Where is the goal of existential therapy?

answered Jan 17 in Psychology

1 answer 27 views

Where are the four criteria for evaluating theoretical models usually applied?

answered Jan 16 in Psychology

1 answer 24 views

According to attachment theory, what are the consequences of insecure attachment in childhood?

answered Jan 16 in Psychology

1 answer 28 views

What is the prevalence of OCD?

asked Jan 16 in Psychology

1 answer 36 views

What are the key components of Maslow's hierarchy of needs?

asked Jan 13 in Psychology

1 answer 45 views

What two elements primarily make up the sun?

asked Jan 8 in Science

1 answer 30 views

What mammal is the most intelligent?

answered Jan 7 in Science

1 answer 36 views

The rock of the mantle is mostly what?

asked Jan 2 in Science

1 answer 28 views

In the lens makers' equation, diverging lenses and virtual images are associated with what kinds of numbers?

answered Dec 31, 2024 in Science

1 answer 59 views

Enzymes are a type of what, and as such, they are not reactants in the reactions they control?

asked Dec 30, 2024 in Science

1 answer 59 views

Combining nonpolar olive oil and polar vinegar yields what type of mixture?

answered Dec 30, 2024 in Science

1 answer 31 views

What is the diploid number for fruit flies?

answered Dec 27, 2024 in Science

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