Which group of elements are considered to be in the same family?

A. helium, neon and argon

B. potassium, calcium and scandium

C. manganese, iron and cobalt

D. hydrogen and helium

True or false When water is ionized, it can act as either an acid or a base.

if the density of copper is 8.9g/cm^3 and the Volume of the sample is 23.4 mL what would be the mass?

Which of the following gases is formed during photosynthesis? Carbon dioxide Nitrogen Oxygen Sulfur dioxide

A piece of wood has a volume of 30 cm³. It has a length of 2 cm and a width of 3 cm. What is the height of the wood? 5 cm 6 cm 15 cm 60 cm

If 63.8 grams of aluminum metal (Al) react with 72.3 grams of sulfur (S) in a synthesis reaction, how many grams of the excess reactant will be left over when the reaction is complete?

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics

3.011 x 10^23 atoms F in grams

What would you use if you needed to determine the density of an object? balance and graduated cylinder balance and scale scale and spectroscope