Each element in the periodic table is assigned an atomic number. This number is the same as?

The part of a cell that gives the cell unique characteristics is the A) nucleus. B) vacuole. C) cytoplasm. D) membrane.

Consider the reaction Mg (s) + I2 (s) → MgI2 (s) Identify the limiting reagent in each of the reaction mixtures below: a. 100 atoms of Mg and 100 molecules of I2 b. 150 atoms of Mg and 100 molecules of I2 c. 200 atoms of Mg and 300 molecules of I2 d.

What is the effect of adding naoh (aq) to an aqueous solution of ammonia?

In mathematics, a polynomial equation has more than two solutions. The Greek prefix poly - means A. half. B. large. C. around. D. several.

Acid into water true or false

Consider the total ionic equation below. 2 upper N upper H subscript 4 superscript plus, plus 2 upper O upper H superscript minus, plus 2 upper H superscript plus, plus upper S upper O subscript 4 superscript 2 minus right arrow 2 upper N upper H

Which of the following is true regarding phase changes? A. Condensation is the reverse of evaporation. B. Melting is the reverse of deposition. C. Freezing is the same as sublimation. D. Sublimation is the same as boiling.

Which of the following adaptations to life on land is found in both insects and modern reptiles? A. metamorphosis from a larval form B. body surfaces that resist evaporation C. tracheae to distribute oxygen D. ability to fly E.

Draw the correct structural formula for the following compounds: (be sure to include the hydrogen atoms where required) a) 2-pentene b) 2,3-diethyl-3,5-dimethylhexane c) 4-ethyl-2,6-dimethyl-2-heptene

Letters B and C on this model show us daytime on Earth. Both locations have daytime because of A) Earth's tilt on its axis. B) Earth's orbit around the sun. C) Earth's rotation on its axis. D) Earth's distance from the sun.