7. A typical deposit of cholesterol, C2,H..0 in an artery might have a mass of 0.0039...
6. Complete and balance the following equation; write names and formulas of products Na3PO4 Sodium phosphate + + MgSo. magnesium sulfate → 7. SOLVE: USE DIMENSIONAL ANALYSIS AND SHOW WORK The equation for the making of chlorine dioxide CIO, is Cl2 + 02 - CIO a. Balance the equation; Rewrite the balanced equation In one experiment, 17.8 g of chlorine were used and yielded 43.5 g of chlorine dioxide- CIO. b. Calculate i) the theoretical yield (in grams) of chlorine...
7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of this compound? 8. How many molecules of H,O (M.w. 18 g/mol) are there in 355 grams of H,O? How many hydrogen atoms are in 355 grams of HO?
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 4.1 x 1028 kg and 1.4 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would it weight (in pounds)?
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 8.7 x 1028 kg and 1.8 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would it weight (in pounds)?
3. 495 grams is a typical mass for a glass of water. Calculate the number of water molecules you drink when quenching your thirst with this quantity of our most common liquid. 4. How many moles are in 150 grams of each of the compounds in problem #1? 5. How many grams are need to give .250 moles of each of the compounds in problem #1? 6. What is the percent weight of oxygen in barium chlorate? Da Cloz) 2...
Qustion Campleon Status: QUESTION 7 What is the mass of a 4.110-mol sample of sodium hydroxide? Oa. 98.6 g Ob0.1028 g Oc 164,4 g O d.9.732 g Oe. 40.00 g QUESTION 8 A sample of ammonia has a mass of 89.9 g. How many molecules are in this sample? Oa541 x 1025 molecules Ob.5.28 molecules Oc3.18x 1024 molecules Od 1.14 x 1023 molecules x 10-15, molecules QUESTION 9 A mole of a chemical substance represents Oa.6.02 x 1025 chemical particles...
An acid with molar mass 116.08 g/mol contains by mass, 41.4 %0, 3.47 %H, and 55.1 % Determine the molecular formula (must find empirical formula first). How many oxygens are in the molecular formula? Include the number only. Hydrogen chloride is prepared using the reaction: NaCl(aq) + H2SO4(aq) → _HCl(9) + _Na2SO4(aq) What is the limiting reagent if 4.00 g H2S04 (98.09) is reacted with 393 moles NaCl (58.44) You must balance the equation first.
7.H,0 - a. How many moles of oxygen are produced when 1.26 moles of H,O is reacted? (1pts) b. How many moles of H,0 are needed to produce 55.7 moles of hydrogen? (1pts)
#24, and #25
k3 24. Calculate the mass of butane needed to produce 1,000 kg of heat by this (80 points) 2 C4HIo (g) +13 02 (g) 10 H:0 (g)+8 CO2(8) AHrun 5,755 kJ moles are in 17.65 g of KOH? How many molecules of KOH? (20 points) 25. How many
UuDIP LATUL 7 T0 CT 4.22. Hemoglobin in Blood A typical adult body contains 6.0 L of blood. The hemoglobin content of blood is about 15.5 g/100.0 mL of blood. The approximate molar mass of hemoglobin is 64,500 g/mol. How many moles of hemoglobin are present in a typical adult? bottle of "organic" liquid *4.34. Mixing Fertilizer The label on a fertilizer concentrate states that it contains 8 g of phosphate per 100.0 mL and that 16 fluid ounces should...