How many oxygen atoms are in 3.45 mol CaCO3

Jill swam 200 meters in 2 minutes 42 seconds. If each lap is 50 meters long, which time is her estimated time, in seconds, per lap? (2 minutes 42 seconds = 162 seconds)A. 32B. 40C. 48D. 60 A new car cost $14875. Three years later, the insurance company valued it at $10700. Calculate the percentagereduction in value over the three years. Order the numbers from least to greatest.= 1.5- (-2)2.58/3HELPP what is the measure of EACH exterior angles tof the polygon shown? Cela dit sans mchancet particulire. (l.9) : Comment est construite cette phrase ? Sur quoi cela insiste-t-il ? (2pts) To what temperature will a 50.0 g piece of glass raise if it absorbs 5275 joules of heat and its specific heat capacity is 0.500 J/gC? The initial temperature of the glass was 20.0 degrees C. *Include your units!Round your answer to the nearest whole number. The class buys 3 bags of apples. Each bag has 24 apples. The total cost of the 3 bags of apples is $12.24. The class sells the apples for $0.75 each. How much money will the class gain per apple Please help me with my math ASAP! A rectangular sheet of cardboard 3 feet by 5 feet will be made into an open box by cutting equal-sized squares from each corner and folding up the four edges. A diagram of the unfolded box is provided in figure, the shaded region represents the areathat was cut from the corners of the box. What is the largest volume of such a box? what are the importance of knowing the theorems on midline, trapezoid and kite Anne has worn a black shirt on 6 of the last 20 days. Considering thisdata, how many times would you expect Anne to wear a black shirt in thenext 10 days? when was the democratic conevtion disunity on displays published 13 and 14, 10 points no links please -) Rewrite the following sentence, starting with rivers and oceans.SPTChemical waste pollutes rivers and oceans If a line contains the point (0, 1) and has a slope of 2, then which of the following points also lies on the line? (1,3) (3,1) (2,2) (2,3) 5. What is one of the main benefits of volunteering with community organizations while you are still in high school?1) It allows you to put your time to good use.2) It allows you to experience career related work while making a difference in your community.3) It helps you get to know new people.4)You will be paid for your time and give you the benefit of saving money for your career education and training If you roll a 6-sided die 6 times, what is the best prediction possible for the number of timesyou will roll an odd number? EYellowJa character or person views the world is calledo indirect characterizationO inference.O perspective.O first-person narrative.100 points Can someone please help me? I need someone to answer and explain, Ill reward points + brainalist (btw only need help with 13) 1/2 log2x=3log23 rewrite with out using logarithmic