Recent activity by CandaceGarra

1 answer 26 views

Calculate the standard enthalpy change for the reaction where 50 ml of 0.1 M hydrochloric acid reacts with 50 ml of 0.1 M sodium hydroxide solution. The temperature change observed during the reaction was 5°C and the specific heat capacity of the solution is 4.18 J/g°C.

asked 2 days ago in Chemical thermodynamics

1 answer 61 views

How to quantify the concentration of copper (II) ions in a sample of water using colorimetry?

asked 6 days ago in Analytical Chemistry

1 answer 48 views

How can the concentration of sodium ions in a sample of seawater be determined using potentiometry?

asked Jan 29 in Analytical Chemistry

1 answer 46 views

Assuming standard conditions, calculate the standard enthalpy of combustion of methane (CH4), given that the standard enthalpies of formation of CH4 and H2O are -74.8 kJ/mol and -285.8 kJ/mol, respectively. The balanced chemical equation for the combustion of CH4 is:CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) What is the standard enthalpy change (ΔH°) for this reaction?

answered Jan 22 in ThermoChemistry

1 answer 36 views

A student sets up an electrochemical cell with two copper electrodes and a copper(II) sulfate solution. The concentration of the copper(II) sulfate solution is 0.1 M. The student measures the potential difference between the electrodes as 0.54 V. Calculate the resistance of the cell in ohms.

answered Jan 22 in ElectroChemistry

1 answer 47 views

What is the oxidation state of the chromium atom in K2Cr2O7, and how did you determine it?

answered Jan 21 in Inorganic Chemistry

1 answer 38 views

What is the name of the theory that suggests that our behaviour is shaped by the environment?

answered Jan 20 in Psychology

1 answer 56 views

Who coined the term 'third variable problem'?

asked Jan 20 in Psychology

1 answer 6 views

What is random sampling in psychology research?

answered Jan 20 in Psychology

1 answer 13 views

According to attribution theory, what is the process of making judgments about the causes of behavior?

answered Jan 17 in Psychology

1 answer 47 views

What is the Social Model of Disability?

asked Jan 15 in Psychology

1 answer 18 views

What is the correspondence bias?

answered Jan 14 in Psychology

1 answer 26 views

Which common type of diabetes is also known as noninsulin-dependent or adult-onset diabetes?

asked Jan 8 in Science

1 answer 25 views

Whether it's puppies or people, offspring and parents usually share many of what?

answered Jan 8 in Science

1 answer 26 views

What type of scientist uses earth-orbiting telescopes?

asked Jan 8 in Science

1 answer 26 views

What organic catalysts work by lowering the activation energy needed to start biochemical reactions?

answered Jan 7 in Science

1 answer 16 views

What can be used to mechanically separate the two elements by attracting the iron filings out of the mixture and leaving the sulfur behind?

answered Jan 6 in Science

1 answer 21 views

In a chemical reaction, the amounts of reactants and products will be constant when what state is attained?

asked Dec 30, 2024 in Science

1 answer 8 views

Arteries carry oxygenated blood away from the heart, what carries un-oxygenated blood back to the heart?

answered Dec 27, 2024 in Science

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