Which field of science studies the composition and structure of matter? a. physics c. chemistry b. biology d. geology

Taking a cross section of a fiber can reveal what?

When iodine solution is mixed with an unknown sample of food, the mixture turns a blue black color. this color change indicates the presence of?

Properties of water from a glacier and geyser

What is the density of an object with the density of 3 when cut in half?

3 Pieces of Key Information elements, compounds, mixtures also state a real world example of elements, compounds, mixtures and lastly why is elements, compounds, mixtures are important

Which organism lived on Earth during the Precambrian time? A. fern B. dinosaur C. cyanobacteria D. octopus

What is the concentration of chloride ion when 16.8ml of a 0.554 M solution of barium chloride is combined with 16.8ml of a 0.593M of aluminum chloride?

A chemist measures the amount of fluorine gas produced during an experiment. she finds that 76.9 g of fluorine gas is produced. calculate the number of moles of fluorine gas produced.

The job of the human heart is to circulate blood through all of the body's arteries, capillaries, and veins. The job of the human lungs is to supply the small amount of blood in them with oxygen.

A 90 lb person is prescribed a drug in the amount of 50mg/kg body per day to be delivered in 2 doses per day. Each tablet contains 250mg of the medicine. How many tabletes should be given per dose?