The reaction times for three trials of an experiment are 80.3, 80.2, and 80.5 seconds. Which average time is expressed using the correct number of significant figures?

A. 80.3

B. 80.33

C. 80

D. 80.333

Why is climate change important

Use the problem below to answer the question: 34 grams of carbon react with an unlimited amount of H2O. The reaction is: C + H20 - CO + H2 Is this equation balanced? Yes or No

Given that a 11.00 g milk bar chocolate bar contains 7.500 g of sugar, calculate the percentage of sugar present in 11.00 g of milk chocolate bar keeping in mind that the answer should have four significant figures

A solution contains 35 grams of KNO3 dissolved in 100 grams of water at 40°C. How much more KNO3 would have to be added to make it a saturated solution? (1) 29 g (3) 12 g (2) 24 g (4) 4 g

What is the chemical equation for Aluminum metal reacts with hydrochloric acid to form hydrogen gas and an aluminum chloride solution

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Which human body system does Erythrocyte most resemble and why

Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas the reactants in this reaction are

CH4 + 202 + CO2 + 2H2O How many grams of CO2 will be produced from 15.0 g of CH4 and 114 g of O2?

A student titrates an unknown amount of potassium hydrogen phthalate (KHC8H4O4, often abbreviated KHP) with 20.46 mL of a 0.1000-M NaOH solution. KHP (molar mass 5 204.22 g / mol) has one acidic hydrogen.