Palladium-103 (Pd-103) has a half-life of 17 days. Its molar mass is 0.10291 kg/mol. 1) What...

Palladium-103 (Pd-103) has a half-life of 17 days. Its molar mass is 0.10291 kg/mol.

1) What is the decay constant of Pd-103?

2) What is the initial activity of a 750-gram sample of Pd-103?

3) What is the activity of the sample after 51 days?

4) After how many days will the activity decrease to 1/20th of the initial activity?

Expert Solution

genius_generous answered 2 years ago

The empirical formula for a compound is CH2Cl and its molar mass is 98.96g/mol. What is...

The empirical formula for a compound is CH2Cl and its molar mass is 98.96g/mol. What is the molecular formula for the compound?

Cumene, a hydrocarbon, is 89.94% carbon, and its molar mass is 120.2 g/mol. What are the...

Cumene, a hydrocarbon, is 89.94% carbon, and its molar mass is 120.2 g/mol. What are the a) empirical and b) molecular formulas for Cumene? Show your work

A)The mass of the Moon is 7.4 × 1022 kg, its radius is 1.74 × 103...

A)The mass of the Moon is 7.4 × 1022 kg, its radius is 1.74 × 103 km, and it has no atmosphere. What is the acceleration (in m/s2) due to gravity at the surface of the Moon? (G = 6.67 × 10-11 N ∙ m2/kg2) B)From what height above the surface of the earth should an object be dropped to initially experience an acceleration of 0.54g? (G = 6.67 × 10-11 N ∙ m2/kg2, Mearth = 5.97 × 1024 kg,...

A compound has a molar mass of 100 g/mol and the percent composition (by mass) of...

A compound has a molar mass of 100 g/mol and the percent composition (by mass) of 65.45% C, 5.45% H, and 29.09% O. Determine the empirical formula and the molecular formula.

What mass of a weak acid with a molar mass of 100 g/mol is necessary to...

What mass of a weak acid with a molar mass of 100 g/mol is necessary to neutralize 25 ml of 0.10 M NaOH solution? What is the pH of 0.15 g of sodium acetate NaC2H3O2 in 100 ml water H2O?

A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is...

A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is the molecular formula for this compound? 2-A compound is 54.53% C, 9.15% H, and 36.32% O by mass. What is its empirical formula? 3-The molecular mass of the compound is 132 amu. What is the molecular formula? 4What is the empirical formula of a compound composed of 3.25% hydrogen (H), 19.36% carbon (C), and 77.39% oxygen (O) by mass? 5What is the empirical formula...

What mass (in g) of iron (Fe, molar mass = 55.85 g∙mol–1) is needed to experimentally...

What mass (in g) of iron (Fe, molar mass = 55.85 g∙mol–1) is needed to experimentally produce 50.0 g of iron(III) oxide (Fe2O3, molar mass = 159.70 g∙mol–1) in excess oxygen if the percent yield is 78.7%? 4Fe(s) + 3O2(g)2Fe2O3(s) A. 22.2 g B. 27.5 g C. 35.0 g D. 44.4 g

The loaded cab of an elevator has a mass of 3.6 × 103 kg and moves...

The loaded cab of an elevator has a mass of 3.6 × 103 kg and moves 216 m up the shaft in 17 s at constant speed. At what average rate does the force from the cable do work on the cab?

If the heat of combustion for a specific compound is -1270.0 kJ/mol and its molar mass...

If the heat of combustion for a specific compound is -1270.0 kJ/mol and its molar mass is 27.33 g/mol, how many grams of this compound must you burn to release 200.00 kJ of heat?

1. Calculate the mass of KHC8H4O4 (molar mass = 204.44g/mol) that reacts with 15mL of NaOH...

1. Calculate the mass of KHC8H4O4 (molar mass = 204.44g/mol) that reacts with 15mL of NaOH solution in part A.3. Express this mass of KHC8H4O4 to the correct number of significant figures and record the calculation on the report sheet. 2. A 0.204g sample of CO32- antacid is dissolved with 25.0mL of 0.0981M HCl. The hydrochloric acid that is not neutralized by the antacid is titrated to a bromophenol endpoint with 5.83mL OF 0.104M NaOH. Calculate the number of moles...

Question