A sample of tofu has a hydrogen ion concentration of [H+]=6.3*10-8. What is the approximate pH of the tofu?

How many grams of mgbr2 are needed to produce 75g or metal?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

What is the chemical formula for the compound formed between sodium and flour one