Ted used a balance scale to weigh a 2.233 g sample of copper sulfate. Which of these measurements made by Ted is the most accurate?

Which of the following is made up of a coordinate covalent bond? A. sodium chloride (NaCl) B. ammonia (NH3) C. chlorine (Cl2) D. aluminium bromide (AlBr3) E. carbon monoxide (CO)

Which of the following is NOT a reason that carbon is the basis of organic chemistry? Question 3 options: A. Carbon can bond with other carbon atoms to make long molecules B. Carbon can form up to 4 bonds C.

Check all that apply. a. Cathode rays have mass. b. There are subatomic size particles in an atom. c. In the atom, the particles of the cathode rays are embedded in a diffuse cloud of positive charge. d.

How many atoms are in KNO3?

What kind of organic compounds do fats and oils represent?

What are the indications/signs that a chemical change has occurred?

Antibiotics are often effective treatments for diseases caused by bacteria. viruses. some bacteria and some viruses. all bacteria and all viruses.

If the age of the middle layer of a rock sample is between 600 million years and 1 billion years, which of the following could be the age of the topmost layer?

All of space and the matter in it is?

Which compounds has the lowest vapor pressure at 50 c