What is the mass of 25.0 grams of hf

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter