11. What volume of hydrogen gas at STP may be prepared by the reaction of 4.54 g of gallium with 110. mL of 1.75M hydrochloric acid? The unbalanced equation is shown below. (Assume STP is 0 °C and 1 atm) Ga (s) + HСI (ag) — GaCl3 (aq) + H2 (g)

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A: We have given that 2 NaHCO3  → Na2CO3 + H2O + CO2 given that mass of NaHCO3 = 5grams molar mass of…

Q: What is the mass of 50.0L of CO2 at STP? * 1 point O 49,300g O 19.7g O 25.5g O 98.2g What is the…

A: At STP, The pressure,,(P) = 1 atm. The temperature, (T) = 273 K. The volume of 1 mol of a substance…

Q: A tank was filled with 11 g of oxygen (O2), 87 g of nitrogen (N2) and 6 g of carbon dioxide(CO2). At…

A: we know, Molar mass of O2 = 32 g/mol Molar mass of N2 = 28.0134 g/mol Molar mass of CO2 = 44.01…

Q: What volume of hydrogen gas (in mL) at 703 mm Hg and 40 °C can be produced when 2.9 g of MgCO3(s)…

A: According to an ideal gas equation PV= nRT Where P= pressure of the gas, V= volume of the gas, n= no…

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A:

Q: A Calcium chloride and sodium hydroxide react according to the equation: CaCl (aq) + 2 NaOH(aq) →…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.