Which element has no stable isotopes?

1. CO27

2. Sb51

3. TH90

4. Pb82

While modelling a volcano using two substances, Dereck observes bubbling and fizzing. Which of the following best names and explains the change that causes bubbling and fizzing?

When a reversible reaction is at equilibrium, the concentration of products and the concentration of reactants must be

Would you expect hydrogen chloride to be a gas, liquid, or a solid at room temp and pressure? explain your answer (its a 3 mark so dont explain it that much)

What's the molarity of a solution created by dissolving 0.60 moles of KCL in 2.0 L of water

Given an acidic solution with a pH of 4.5, what is pOH of the same solution?

How many vowels does the word love have

What is silicon used for? -matches -gunpowder -glass -steel can coating

A intramuscular medication is given at 5.00mg/kg of body weight. What is the dose in grams for a 180-lb patient?

Nuclear fusion is the source of energy for stars. Besides hydrogen, which other element is most likely also common in stars?

Since the early 2000s, careers in the field of genetics have grown at a rapid pace. Which of these is a probable cause for this explosion of available and expanding jobs?