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just trying to check if my answers are right ? if not what is the right...
no explanation needed just need answer for each box QUESTION 8 How many grams does 5.60 x 1022 molecules of SiO2 weigh? QUESTION 9 How many grams are in 8.13 x 1023 molecules of CH4? QUESTION 10 How many grams does 0.500 moles of copper (1) bromide weigh?
was wondering are these answers right ? QUESTION 10 How many grams does 0.500 moles of copper (1) bromide weigh? 71.58 QUESTION 11 How many grams are there in 1.60 x 1024 molecules nitrogen dioxide, NO2? 122.28 QUESTION 12 How many grams are there in 2.30 x 1024 atoms of silver?
just wanted to know if i got theese questions right and if i didnt whats the correct answrr ? QUESTIONS It was determined that 1.4 x 1024 carbon dioxide molecules are produced when propane is combusted according to the equation below. Calculate the number of moles of propane that was burned. note: Make sure you have the right number of sig figs. For decimal answers, make sure you write the zero. Example: 0.99 0.77moles QUESTION 6 Calculate how many moles...
no explanation just need to know what goes in box QUESTION 6 Determine the mass of zirconium silicon , and oxygen found in 0.3384 mol of zircon, ZrSio, a semiprecious stone. Your answer must have the correct number of significant figures. QUESTION 7 How many moles are there in 2.35 x 1024 molecules of water?
what is the predicted product from the following combination reaction? E) none of the above 33) Which of the following produces the characteristic color of a fireworks display? A) atoms exploding B) molecules exploding C) electrons dropping to lower energy levels D) nuclei dropping to lower energy levels E) none of the above Chapter 8 34) How many atoms of cobalt equal a mass of 58.93 g? (Refer to the Periodic Table.) A) 1 B) 27 C) 58.93 D) 59...
3 attempts left Check my work Be sure to answer all parts. Report problem How many moles of water contain each of the following number of molecules? Hint points Report your answer using appropriate number of significant figures. Solution a. 8.37 x 1025 molecules Guided Solution eBook mol Print b. 3.97 x 10-2 molecules mol References c. 2.0 x 1024 molecules mol
no need to explain just need an answer for each box QUESTIONS It was determined that 1.4 x 1024 carbon dioxide molecules are produced when propane is combusted according to the equation below. Calculate the number of moles of propane that was burned. note: Make sure you have the right number of sig figs. For decimal answers, make sure you write the zero. Example: 0.99 QUESTION 6 2 Calculate how many moles of Ca(OH), are needed to produce 4.8 x...
Just to check! Thank you!! 2 attempts left Check my work Be sure to answer all parts. In a combination reaction, 1.49 g of lithium is mixed with 6.78 g of oxygen. (a) Which reactant is present in excess? 0 lithium. oxygen. (b) How many moles of product are formed? 0.424 mol (c) After the reaction, how many grams of each reactant and product are present? O gli 3.2 g Li20
10) 10) Consider the hypothetical reaction: 3A2 + 2B - C + 2D Ir 6.0 moles of A are mixed with 2.0 moles of B, what is the maximum amount of C that can be formed? A) 6.0 mol B) 8.0 mol C) 2.0 mol D) 1.0 mol E) 5.0 mol 11) What is the mass of 4.35 moles of aluminum? A) 9.78 x 1022 B) 2.62 x 1024 g C) 0.1638 D) 1178 E) 27.8 g 12) 12) Choose...
just trying to check my answer to see if it was correct :) Which of the following solutions would have the highest pH? Assume that they are all 0.10 M in acid at 25°C. The acid is followed by its ka value. a. HOCI, 2.9 108 Hoci H ou' HCH,O, 1.3 x 10-10 HNO2, 4.6 x 104 HCHO, 1.8 * 104 HCIO, 1.1 x 102