If an element has 14 electrons how many protons are present in the atom?

A 220.0-mL sample ofhelium gas is in a cylinder with a movable piston at 105 kPa and 275 K. The piston is pushed m until the sample has a volume of 95.0 mL. The new temperature of the gas is 310. K. What is the new pressure of the sample?

What common carboxylic acid does vinegar contain? acetic acid citric acid hydrochloric acid nitric acid

Here is a question of the Extreme Ice Survey 1) What inspired James Balog to do the Extreme Ice Survey?

What is the mass of iron contained in 100g of an iron ore?

How does the magnetic field surrounding earth benefit humankind A it prevents magma from seeping out of the crust B it steers aircraft away from radiation belt C it protects us from radioactive particles D it draws more oxygen into the atmosphere

A 2-kg box is pushed from rest to a speed of 29.7 m/s in 21 seconds. What is the power require to accelerate the box.

Gamma rays are produced by applying

Which of the following is an example of a chemical change? A bike rusting Mixing salt and pepper A brick breaking Gold melting

Which law is described by saying that doubling the absolute temperature will double the pressure of a sample of gas in a rigid container? Boyle's law Charles's law Dalton's law Gay-Lussac's law

The nucleus of an atom consists of a. neutrons and electrons. b. neutrons alone. c. protons and neutrons. d. protons and electrons.