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1.2.00 moles of nitrogen and 5.00 moles of hydrogen are placed in a container and react to form ammonia, how ...

a, how many grams of ammonia (NH3) are formed? Assume the reaction yield is 100% N2 (g) + 3 H2 (g) --> 2 NH3 (g)
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2.(a) A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 ...

here are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present? (R = 0.0821 L • atm/(K • mol)) (b) The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 2.80 atm. What is the new volume (in mL) assuming the moles of gas and temperature are held constant? (c) Small quantities of Oxygen can be produced by the decomposition of mercury(II) oxide as shown below. Typically, the oxygen gas is bubbled through water for collection and becomes saturated with water vapor. Atomic weight of HgO = 216.6 amu, Atomic weight of Oxygen = 32.00 amu) 2 HgO(s) → 2 Hg(ℓ) + O₂(g) (i) Assuming that 3.05 grams of HgO was used in this reaction, determine the number of moles of oxygen gas formed.(According to the above chemical equation) (ii) Assuming 310. 0 mL of Oxygen gas was collected at at 29°C, calculate the pressure of the Oxygen gas that was collected. (R = 0.0821 L • atm/(K • mol) (iii) If the vapor pressure of water at this temperature equals to 0.042 atm, calculate the pressure reading of this experiment.
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3.. When 4.00-L of 0.0290 M aluminum sulfate and 3.25-L of 0.0700 M Pb(NO3)2 solutions are mixed, solid lead (II) ...

d lead (II) sulfate precipitates (a) Write a balanced chemical equation for the reaction (b) Write the net ionic equation for the reaction (c) What type of reaction is occurring? (d) What is the limiting reagent? The excess reagent? (e) How many grams of lead (II) sulfate are formed? (f) In the lab, a chemistry student mixed the two solutions together and formed 9.40 g of lead (II) sulfate. What percent yield did the student obtain?
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5.hi, i wanted to know how do they calculate how many grams are in 1 amu, i know they say ...

of carbon has the mass of 12 grams and we know a carbon atom is 12 amu heavy so we can calcualte it, but i don't understand how do they know how much 1 mole of carbon weighs.
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1.AU MAT 120 Systems of Linear Equations and Inequalities Discussion

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