How many neutrons does element X have if its atomic number is 21 and its mass number is 95?

What is Hurricane negative effects on human life in Florida

How is a pure substance different from a mixture? A:a pure substance is heterogeneous B:a mixture is made of one substance C:mixtures cannot be separated by physical means D:pure substances cannot be separted by physical means

Earthquake foci (Focus, singular) are ... 1) More than 200 miles 2) 0-50 miles deep 3) Deep 50-200 miles deeo 4) All the above

What is the atomic number of the element located in group 16

The Gibbs free energy change of a reaction can be calculated using the equation ΔG = ΔH - TΔS. A biochemical reaction that can provide energy for cellular metabolism would be one in which: Choose one: A. all terms on the right are negative. B.

What is the chemical formula for polysaccharide?

What is the empirical formula of a compound composed of 32.9g of potassium and 6.73 g of oxygen

Glucose is not made from which of the following

Rank the temperatures from the highest to the lowest. 133F 351K 25C 273K 146C 58F 95F

Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.