How do you find mass in physics

what atrocities were committed by the Axis and Allies during WW2 Can someone help me with this please???... 9 1/4 - 3/4 = 6 4/9 - 3 11/12 = 3 11/15 - 1 5/6 = 4 5/14 - 3 17/21 Pass a brotha some help :( Evaluate an open economy from the spending approach in order to get the three sectorial balances, private, external, and public. If an atom does not bond to another, The number of electrons does not change. True or false?Please help! Please help!!!!!!!!????!! Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen GasZn + 2HCI - ZnCl2 + H2Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged andthat mass is conserved in the reaction.If anyone could maybe send me a drawing itll be so appreciated! God bless you all :) Can someone help ? I dont understand this why does johnny stay to sleep in the lot after pony boy goes home In percy jackson the lightening thief chapter 2, why does percy feel like grover is trying to cover up something about Mrs.Dodds? (I really need help its CoNfUsInG) Which event at the end of the Middle Ages helped Europe Change the most? Explain Find the midpoint of segment AB if A(-3, 8) and B (-7, -6). A diagram of a swimming pool is shown.3.5 mWhat is the approximate circumference of the swimming pool? Use 3.14 as an estimate for t. Which set of ordered pairs represents a function?{(-8, 1), (5. 7),(-6,9), (-6, -9)}o{(-2,-3), (2, 1), (2,6), (4,9)}o{(8,4), (6,4), (9,1),(7-6)}o{(-4,5),(0,0), (2, -8), (2,0)} Help plz :((I'll give brainliest The expression 3(-2m + 5) - 6(-4m - 2) can be written in the form am + b. What is the value of a + b? What do beta blockers and calcium channel blockers do for someone who has ischemia?They prevent further blockages.O They increase the strength of contractions.O They slow heart rate.O They increase heart rate. What region of the US seceded and identified as The Confederacy? O North O Mexico O South O West / Great Plains The nth term of a sequence is given by 3n + 7.Write down the fifth term of this sequence.I