Two atoms have the same number of protons but different numbers of neutrons. What can you conclude about these two atoms? A-they are the same element B-they are the same isotope C-they have the same mass D-thay have the same charge.

Calcium au 2. iron ca 3. nickel fe 4. copper cu 5. gold ni

How do transitional fossils fit with the theory of evolution

The density of a gas is measured at 1.653 g/L at 746 mmHg and 25.0 °C. What is its molar mass?

A rectangular field measures 6.0 m by 8.0 m. What is the area of the field in square centimeters (cm 2) ? Use the formula: Area = length * width. A: 4.8 * 10 4 cm 2 B: 4.8 * 10 5 cm 2 C: 4.8 * 10 3 cm 2

Which statement best describes the molecules in a solid? A: Molecules move completely at random and at very high speeds. B: Molecules expand to the edge of their container. C: Molecules vibrate in a fixed position and do not move around much.

At what the pressure, in atmospheres, that O2, gas at 75°C has a density of 2.00 g/L

What aspect relates to energy

What is the specific heat capacity of silver metal if 75.00 g of the metal absorbs 56.4J of heat and the temperature rises 35.0°C?

Explain chemical bonds

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap water. The table below shows an incomplete record of the investigation.