Which of the following BEST describes the composition of the sun?

the sun is made of exploding iron enriched material.

the sun is made of molten rock.

the sun is made of super heated carbon.

the sun is made of gas.

In which type of chemical reaction do two or more substances combine to form one substance?

A student is conducting a lab that requires 2 M HCl. In the chemical closet, there is 150 mL of 8 M HCl. How much water must be added to stock solution to get the desired molarity for the lab? A) 150 mL B) 450 mL C) 600 mL D) 1200 mL

What discovery was made about particles with an accelerator in 1998

Hey student dissolves 5 g of salt and 20 g of water what is the mass of the solution

How do organisms interact with each other and how can one organism be dependent upon other species

Nonmetal oxides can react with water to form acids. For example, carbon dioxide reacts with water to form carbonic acid: CO2 H2O H2CO3. (1) Write an equation to show how diiodine pentaoxide reacts with water to form an acid. Do not include states.

If atmospheric pressure suddenly changes from 1.00 atm to 0.892 atm at 298 k, how much oxygen will be released from 4.40 l of water in an unsealed container?

Determine the molecular formula for the unknown if the molecular mass is 60.0 amu and the empirical formula is ch2o.

Draw the organic product of the following nucleophilic reaction

How does the energy of the activated complex compare with the energies of reactants and products? select one: a. it is lower than the energy of both reactants and products. b.