Which of the following is a mixture steel water oxygen or gold

An ionic compound contains

A salt crystal has a mass of 0.15 mg. How many NaCl formula units does it contain?

Science has shown that air pollution can cause a variety of health issues in our society. Which of the following can be a health problem caused by air pollution? I think its b? A. Diabetes B. Respiratory distress C. Psoriasis D. Dehydration

Which statement describes a catalyst?

Identify the product of genetic engineering. a. inserting a spider's silk gene in a goat's DNA to weave silk threads b. choosing livestock for mating to pass on their genes for being large to offspring c.

Which is a characteristic of super-absorbent polymers? When they absorb water, they become gels. They bind to water in stoichiometric ratios. They have a single water-absorbing monomer per molecule.

A plant converts light energy from the sun to chemical energy stored in glucose through fermentation. anaerobic respiration. photosynthesis. aerobic respiration.

An analysis of 10.0 grams of sample of a compound is found to contain 27.0 percent sodium (na), 16.5 percent nitrogen (n), and 56.5 percent oxygen (o). determine the empirical formula of the compound.

All organic molecules contain carbon and hydrogen. what parts of an organic molecule may contain oxygen, nitrogen, or phosphorus?

Based on Reference Table J. which two reactants react spontaneously? (I) Mg (s) + ZnCl2 (aq) (2) Cu (s) + FeSO4 (aq) (3) Pb (s) + ZnCl2 (aq) (4) Co (s) + NaCl (aq)