1. Calculate the atomic masses (u or amu)
Formula Calculations /Formula mass
KBr
CaCl2
Na2CO3
(NH4)3PO4
2.Balance the following chemical equations?
H2 +Cl2àHCl
AgNO3 + H2SàAg2S + HNO3
P + O2àP2O3
HCl + Ba(OH)2 à BaCl2 + H2O
H2O2àO2+H2O
1. Calculate the atomic masses (u or amu) Formula Calculations /Formula mass KBr CaCl2 Na2CO3 (NH4)3PO4 ...
write net ionic equations for the following reactions: Part A 2 AgNO3(aq) +CaCl2(aq) + 2 AgCl(s) + Ca(NO3)2 (aq) Express your answer as a chemical equation. Identify all of the phases in your answer. = A * O 2 ? Submit Request Answer Part B Ba(OH)2(aq) + 2 HCl(aq) → BaCl2(aq) + 2 H2O(l) Express your answer as a chemical equation. Identify all of the phases in your answer. AED + O 2 ? Submit Request Answer Part Ca(8) +...
Calculate the formula mass of magnesium periodate, Mg(10.), in atomic mass units (amu or u).
Calculate the formula mass of magnesium bromite, Mg(BrO2)2Mg(BrO2)2, in atomic mass units (amu or u).
1. Balance the following chemical reaction: Na2CO3 (aq) +CaCl2 (aq) → CaCO3 (s)+NaCl (aq) Na₂CO₃ + Call, CaCO3 + 2NaCl 2. Using Table 7 below, determine the molar mass of calcium chloride, CaCl2. Table 7: Molar Mass of Calcium Chloride (CaCl2) Atomic Mass Multiply # in Contribution Formula Element Calcium (Ca) g/mol g/mol Chlorine (CI) g/mol g/mol Total = g/mol 3. Using Table 8 below, determine the molar mass of sodium carbonate, Na2CO3. Element Table 8: Molar Mass of Sodium...
4. (1 point) Write balanced equations for the complete combustion of each of the following substances. a. C3H28 (1) + b. C2H,2011 (s) + 5. (2 points) Identify each of the following unbalanced reactions as belonging to one or more of the following categories: precipitation, acid-base, or oxidation-reduction. Type Reaction K2SO4 + Ba(NO3)2 → BaSO4 + KNO3 HCI + Zn → ZnCl2 + H2 HCl + AgNO3 → AgCl + HNO3 HC1+KOH →KCI+H2O Zn + CuSO4 → ZnSO4 + Cu...
balance each of the following equations Fall 209 CHM 105.004 Exam 2 Answer all the question in order in the blue book. Plesse leave at least two lines between question and show your calculations for full credit. N-6.023 x 10” particles per mol: R 0.08.205 L-atm/(mol-K) b) Al2(PO4) 3 e) CuSO4-5 H2O 1. Calculate the molar masses of: a) (NH4)2SO4 2. Calculate: a) the number of atoms of calcium in a 10.50 g sample of the metal b) the mass...
QUESTION 1 The conversion factor which converts mass to moles is called the molar mass. True False QUESTION 2 We have 2 moles of sodium (Na) atoms and 2 moles of chlorine (cl) atoms. The number of atoms for both are True False Question Completion Status: QUESTION 19 Which one of the following is not a soluble compound in water? O KOH CaSO4 O Li₃PO4 Mg(NO3)2 QUESTION 20 Which one of the following chemical equations is a balanced equation? CH(E)...
question 1,2 Your Name: Student ID: Show all your work and calculations to receive full credit. 1. (10 pts) Ndeye learned the law of conservation of mass. Balance the following equations. a) _Ticle + NaH → Ti + NaCl + H2 gobelets b) KClO4 + KCl + O2 c) __C12H22011 + 02 CO + H2O d) _FeCl2 + K2SO4 → FeSO4 + _KCI e) __Fe + _H2O + _02 → _ Fe(OH)3 2. Tahri found that the composition of a...
Name (First and Last): Stoichiometry and Mass Relationships Report Pages Obtain values from the pictures found in the procedure to complete the data table below A. Data: 65.62 + Mass beaker + NaCO3 + 66.62g 65.62g 2 Mass empty beaker 3 Mass Na:COs used 19. 4 Mass graduated cylinder + HCl(aq) 5 Mass empty graduated cylinder 12.689 4.41 g 8. 279 1 74.899 Mass HCl(aq) used 65.629 19 8.27 Total mass before rxn: beaker + Nazco, + HCl(aq) 65.623 8...
1). Determine the thickness of a piece of platinum foil that has a mass of 2.000 g, and has length and width of 9.85 cm and 5.20 cm, respectively. Note that the density of platinum is 21.45 g/cm3 . 2). A 100.06-g piece of tungsten metal is dropped into a graduated cylinder containing water. If the water level in the graduated cylinder is observed to increase from 14.5 mL to 19.7 mL, what is the density of tungsten? 3.) What...