what relationships can exist between organisms in ecosystems and how do organisms interact in order to survive

In an experiment, 132 grams of potassium bromide was dissolved in 100 grams of water at 70°C in 1 minute.

Phenylacetic acid, HC8H7O2 is one of the substances that accumulates in the blood of persons with phenylketonuria, an inherited disorder that can cause death. A 0.085 M solution of HC8H7O2 is found to have a pH of 2.68.

A solution has a [OH-] = 8.6 x 10-5. Answer the following questions. pOH = pH = [H+] =

Rasheed calculates that his chemical reaction should produce 4 moles of product, but when he does the experiment, he gets only 3 moles. What is his percent yield?

How can I calculate the mass percent of carbon, nitrogen and oxygen in acetamide, C2H5NO?

Write the mathematical expression that allows you to solve for the oh - concentration in water when you know only the h3o + concentration.

The role gravity played in the formation of the sun?

What kind of reaction occurs when you mix aqueous solutions of barium sulfide and sulfuric acid?

What is true about empathy? Most anyone can learn this skill. Not everyone can learn this skill. It is a desirable attribute. choices A and C

What effect can new observations have on a scientific theory