Hydrogen peroxide decomposes into water and oxygen in a first-order process. h2o2(aq) --> h2o(l) + 1/2 o2(g)at 20.0 °c, the half-life for the reaction is 3.92 x 104 seconds. if the initial concentration of hydrogen peroxide is 0.52 m, what is the concentration after 7.00 days? 1.2 x 10-5 m0.034 m0.074 m0.22 m0.52 m

Acompound is found to contain 6.1% hydrogen and 93.9% oxygen. find it’s empirical formula.

1. according to the article, the chinese government has tried to control its people in all of the following ways except: question 1 options: create and spread propaganda in the media censorship of the media allowing people to create their own social media deleting people's social media posts without their permission question 2 (1 point) 2. when a government has total control over its citizens, including the media, it is a of government question 2 options: constitutional monarchy parliamentary democracy autocracy presidential democracy question 3 (1 point) according to the article, "social credit" is question 3 options: an experiment to people talk on-line a farming experiment that hurt people under mao ze dong using someone else's data from the internet, to give or take away things such as the right to buy an airline ticket a credit you get in china for having friends in real life, and not just on social media question 4 (1 point) china wants to take control over social media in which other region? question 4 options: taiwan chile japan hong kong

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.