If an unknown element has a mass number of 14 and 7 neutrons how many protons are there

This scientist led a series of experiments that used high speed lightweight atoms called alpha particles to bombard very thin pieces of gold foil. Some of the alpha particles went straight through the foil, but a few alpha particles bounced back.

A balloon that contains 0.75 L of a gas at 25°C is cooled to - 100°C. Calculate the new volume of the balloon. A. 0.44L B. 1.3L C. 3L D. 94 L

Click to review the online content. Then answer the question (s) below, using complete sentences. Scroll down to view additional questions. Online Content: Site 1 What resource is often compromised due to mining?

Identify the product formed from the phosphorylation of adp.

What is the potential energy of a car with a mass of 1200kg at the top of a 42m high hill?

How do i give the number of significant figures in 0.0037 mm

Which of these are ionic compounds?

Which property can be defined as the ability of a substance to be hammered into thin sheets

Select the group of organelles that is common to both plant cells and animal cells. A. nucleus, cytoplasm, ribosomes, chloroplasts B. cell wall, ribosomes, cell membrane, mitochondria C. cytoplasm, mitochondria, cell wall, nucleus D.

A compound is found to have a composition of 70.4% carbon and 29.6% hydrogen, by mass. what is the empirical formula for the compound?