An atom has the following electron configuration. 1s^2 2s^2 2p^6 3s^2 3p^4 How any valence electrons does this atom have?

Ouesuu Listen Matthew set up an experiment to see if a fertilizer affects the growth of bean plants. Matthew watered each of the 10 bean plants in group A with 50 milliliters of a solution of distilled water and fertilizer.

How many total atoms are in 0.450 moles of carbon dioxide?

Suppose that a series of measurements have shown that the mean mass of an object is 122.4g with deviation of 1.3 g. How many significant figures are justified in the mean and how would you report the most probable mass of the object? Explain.

What affects how much gravitational force the objects will exert on each other?

How does an increase in concentration affect the rate of a reaction? a) it speeds the reaction up b) it slows the reaction down c) it decreases the number of collisions

An alcohol contains only C, H, and O. When a 1.50mg sample of the alcohol is burned completely in oxygen, 3.30mg of CO2 and 1.80mg of H20 are formed. What is the empirical formula for the alcohol?

Using the field meter, does the field strength increase or decrease as you move away from the bar magnet?

Complete each of the definitions with the appropriate phrase. Precision means that measurements are close to Accuracy means that measurements are close to Anawer Bank each other an accepted value |individual several

Acetylene is hydrogenated to form ethane. the feed to the reactor contains 1.4 mol h2/mol c2h2. (find properties of the reactants/products in appendix of book) a.

Several properties of the element magnesium are shown. Which one is a chemical property?