If two atoms have the same atomic numbers but different mass numbers, then they can be considered atoms of the same element.

True or False

Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats.

What is diastereomeric excess?

Which substance can be broken down by chemical means? (1) magnesium (3) mercury (2) manganese (4) methanol

15.00 mL of a NaCl solution that has a mass of 15.78 grams is placed in an evaporating dish and heated to dryness. The remaining solid has a mass of 3.26 grams.

2 C6H14 + 19 O2 - -> 12 CO2 + 14 H2O Using the above reaction, how many moles of C6H14 are needed to produce 8.86 moles of water

In warm water conditions, female offspring hatch from eggs laid by painted turtles. Male offspring are produced under cold conditions.

It takes 53.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0∘C to 24.2 ∘ c. What is the specific heat for the metal?

What happens to the velocity of a sound wave in air if the temperature of the air increases

What word cannot be used to describe this organism?

Indicate the mechanistic symbol (SN1, SN2) that is most consistent with the following statement. Select the single best answer. The substitution product obtained by the solvolysis of tert-butyl iodide in methanol arises by this mechanism