How many significant figures are present in the following measured quantity? 0.00546 s

How many significant figures are present in the following measured quantity? 1600 m

How many significant figures are present in the following measured quantity? 2.300 x 10 -4 kg

How many significant figures are present in the following measured quantity? 2.34 x 109 Hz

How many significant figures are present in the following measured quantity? 0.00317 kg

How many significant figures are present in the following measured quantity? 3500 cm

How many significant figures are present in the following measured quantity? 1.500 x 10-4 s

How many significant figures are present in the following measured quantity? 4.47 x 109 mL

Classify distilled water as an element, a compound, a heterogeneous mixture, or a homogeneous mixture

Classify gasoline as an element, a compound, a heterogeneous mixture, or a homogeneous mixture.

Classify aluminum foil as an element, a compound, a heterogeneous mixture, or a homogeneous mixture.

Correctly name each of these ionic compounds: (NH4)2SO4

Correctly name each of these ionic compounds: Li2S

Correctly name each of these ionic compounds: Mn2(SO4)3

Correctly name each of these ionic compounds: NaHCO3

Calculate the amount of substance for each sample: 114.87 g Cu

Calculate the amount of substance for each sample: 19.3 g calcium

Calculate the amount of substance for each sample: 19.88 g Al

Calculate the amount of substance for each sample: 0.027 g potassium

Calculate the amount of substance for each sample: 5.8 mg americium

An eflective chemotherapeutic agent for the treatment of tumor growths, N-nitrosomorpholine, has the empirical formula . If its molar mass is 112.1 g/mol, determine the molecular formula of the compound. (Answer the elements in the order: C, H, N, O.)

Disulfur dichloride, S2Cl2, is used to vulcanize rubber. It can be made by treating molten sulfur with gaseous chlorine. S8(ℓ) + 4 Cl2(g) → 4 S2Cl2(g) Complete the table of reaction quantities for the production of 129.4 g S2Cl2. S8 = ______g ; _____ mol

Disulfur dichloride, S2Cl2, is used to vulcanize rubber. It can be made by treating molten sulfur with gaseous chlorine. S8(ℓ) + 4 Cl2(g) → 4 S2Cl2(g) Complete the table of reaction quantities for the production of 129.4 g S2Cl2. Cl2 = ______g ; _____ mol

Disulfur dichloride, S2Cl2, is used to vulcanize rubber. It can be made by treating molten sulfur with gaseous chlorine. S8(ℓ) + 4 Cl2(g) → 4 S2Cl2(g) Complete the table of reaction quantities for the production of 129.4 g S2Cl2. S2Cl2 = _____ mol

Aluminum chloride, Al2Cl6, is an inexpensive reagent used in many industrial processes. It is made by treating scrap aluminum with chlorine according to the balanced equation 2 Al(s) + 3 Cl2(g) → Al2Cl6(s) Determine which reactant is limiting if 2.70 g of Al and 4.05 g of Cl2 are mixed.

Calculate what mass of Al2Cl6 can be produced. 2 Al(s) + 3 Cl2(g) → Al2Cl6(s) 0.100 mol Al 0.0571 mol Cl2 Cl2 is the limiting reactant

Calculate what mass of the excess reactant will remain when the reaction is complete. 2 Al(s) + 3 Cl2(g) → Al2Cl6(s) 0.100 mol Al 0.0571 mol Cl2 Cl2 is the limiting reactant 5.08 g Al2Cl6 produced

Diborane, B2H6, can be produced by this reaction: 2 NaBH4(s) + H2SO4(aq) → 2 H2 + Na2SO4(aq) + B2H6(g) Calculate the volume, in milliliters, of 0.0810 M H2SO4 needed to completely react with 2.70 g NaBH4.

When a commercial drain cleaner containing sodium hydroxide and small pieces of aluminum is poured, along with water, into a clogged drain, this reaction occurs: 2Al(s) + 2NaOH(aq) + 6H2O(ℓ) → 2NaAl(OH)4(aq) + 3H2(g) If 3.9 g Al and excess NaOH react, calculate the volume of H2 gas produced measured at 739 mm Hg and 29.0 °C.

A newly discovered gas has a density of 2.73 g/L at 23.0 °C and 732 mmHg. Determine the molar mass of the gas.

A sample of gas occupies 767 mL at 21 °C and a pressure of 162 mmHg. Calculate its volume if the temperature is raised to 50. °C and the pressure is raised to 259 mmHg. (The amount of gas does not change.)

An unknown metal requires 32.1 J to heat a 21.7-g sample of it from 16.0 °C to 27.6 °C. Determine which of the metals in table below is most likely to be the unknown. Representative Specific Heat Capacities Elements - Specific Heat Capacity Aluminum, - 0.902 Carbon (graphite), - 0.720 Iron, - 0.451 Copper, - 0.385 Gold, - 0.128 The unknown metal is