What would be the mass of 4.64 times 10^24 molecules of NO_3 gas? How many molec

Question

What would be the mass of 4.64 times 10^24 molecules of NO_3 gas? How many molecules of PBr_5 are in 65.0 g PBr_5? H_2SO_4 + K rightarrow How many grams of K will complete the reaction with 56.6 g H_2SO_4? If we start with 39.54 g K and react it with an excess of H_2SO_4, What would be the volume of the hydrogen produced at STP? Using the data in, How many molecules of the potassium sulfate will be produced? MoCl_5(aq) + AgNO_3(aq) rightarrow If we begin with 46.43 g MoCl_5, how many grams of AgNO_3 will be needed to complete the reaction? Using the data from what would be the mass of the precipitate produced from this reaction? Using the data from again tell how many formula units of the product that remains aqueous produced in the reaction. C_4H_10O_2 + O_2 rightarrow If we completely react 74.6 g C_4H_10O_2, how many liters of O_2 gas (at STP would be complete the)reaction? If we react 79.4L of O_2 gas (at STP) with excess C_4H_10O_2, how many molecules of H_2O would be produced? If we react 2.487 times 10^27 molecules of C_4H_10O_2 with excess O_2, what would be the volume of CO_2 produced at STP?

Explanation / Answer

Ans 1.

Molar mass of NO3 is 62g / mol and one mole of it has 6.022 × 1023 molecules.

4.64 × 1024 molecules will weigh (4.64 × 1024 × 62) / 6.022 × 1023

= 477.7 grams

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