(3 points) a second order chemical reaction involves the interaction (collision) of one molecule of a substance with one molecule of another substance to produce on molecule of a new substance this is denoted by +→ the rate of this reaction is modeled by the differential equation =−− where is the amount of substance at time and > 0 are the initial amounts of substances and respectively. suppose that 18 moles of substance and 12 moles of substance react together. if =0.022 1/(mol⋅sec) and )=0, find the amount of time until there are 10 moles of substance

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

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble