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1. the scientific method begins with a question
a. conclusion
b. statement

2. a is a testable statement, often written as an "if/then" statement.
a. statement
b. hypothesis
c. proof

3. scientists test a hypothesis with a experiment.
a. controlled
b. random
c. variable

Un cierto gas tiene un volumen de 800ml a 80°c y 600ml a 80°c y 600mmhg de presión. ¿cual será el volumen del gas a condiciones normales? sí el gas es oxígeno, ¿cuál será su peso? y ¿cuántas moléculas están presentes en el sistema?

Which substance has non polar covalent bonds

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.