Recent activity by Boris02W830

1 answer 52 views

What is the pH of a solution that has a hydrogen ion concentration of 0.001 M? Use a pH meter to determine the pH value of the solution.

answered 5 days ago in Analytical Chemistry

1 answer 39 views

A 0.25 mol/L solution of ethanoic acid (CH3COOH) is mixed with a 0.40 mol/L solution of sodium acetate (CH3COONa). The equilibrium constant for the reaction CH3COOH + NaCH3COO ⇌ CH3COONa + H2O is 1.8 x 10^-5. What is the concentration of CH3COONa at equilibrium?

answered Jan 22 in Chemical equilibrium

1 answer 57 views

When did the DSM-5 change the GAF scale to the World Health Organization Disability Assessment Schedule WHODAS ?

asked Jan 20 in Psychology

1 answer 5 views

According to social learning theory, when do individuals learn through observation?

asked Jan 17 in Psychology

1 answer 21 views

What material comprises the sun and other stars, as well as lightning and the northern lights?

asked Jan 7 in Science

1 answer 58 views

The enzyme pepsin works only in the presence of what?

answered Jan 2 in Science

1 answer 60 views

In birds, lightweight air-filled bones and a large four-chambered heart are examples of adaptations for what purpose?

asked Dec 31, 2024 in Science

1 answer 23 views

What are the three main types of rocks?

answered Dec 28, 2024 in Science

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