Which best describes the current atomic theory?

13._SeClo + _02 → _SeO2 + _Cl2

Which of the following is an example of a chernical change? Boiling water Burning paper Dissolving sugar in water Melting gold

What is the final step of the scientific method? communicating results collecting data proving the hypothesis writing a conclusion

How can the pH of a solution be calculated if the pOH is known? by taking the negative logarithm of pOH by adding the pOH to 14 by raising 10 to the power of - pOH by subtracting the pOH from 14

Sodium fluorophosphate is a chemical used in toothpaste to

When you open a bottle of a soft drink and leave it open, the drink eventually goes flat. this happens because the equilibrium between carbonic acid and carbon dioxide shifts to produce?

When you go down a group, does the tendency for a metal to react (become duller) increase or decrease?

The force of gravity on Planet B is 3.4 m/sec2. A box weighs 34 N on Earth. What is the mass of the box? a) 3.47 kg b) 333.2 kg c) 115.6 kg d) 10 kg

Assume that 4 molecules of nitrogen and 9 molecules of hydrogen are present? after complete reaction, how many molecules of ammonia are proceded?

Which of the following are chemical changes? Check all that apply. A. sugar is dissolved in water B. A warm coke bottle fizzes when opened C. The Copper roof turns green over time D. Baking soda is dissolved in vinegar and bubbles appear E.