Find the mass (in g) of 1.00 atom of lead.

What is the mass of solid NH4Cl formed when 75.5g of NH3 is mixed with an equal mass of HCl? What is the volume of the gas remai

taurus [48]

Answer:The volume of the remaining gas that is ammonia is 23.85 L.

Explanation:

$NH_3(g)+HCl(g)\rightarrow NH_4Cl(s)$

Moles of $NH_3=\frac{\text{mass of} NH_3}{\text{Molar mass of}NH_3}=\frac{75.5 g}{17.03 g/mol}=4.43 mole$

Moles of HCl of gas = $\frac{\text{mass of} HCl}{\text{Molar mass of}HCl}=\frac{75.5 g}{36.5 g/mol}=2.06 mol$

According to reaction 1 mole of HCl reacts with 1 mol of $NH_3$ then 2.06 moles of HCl will react with = 2.06 moles of $NH_3$

Moles left of ammonia left = 4.43 - 2.06 = 2.36 moles

Volume of the gas will be given by Ideal gas equation: PV=nRT

Pressure = 752 mmHg = 752 × 0.0031 atm = 2.33 atm

R = 0.08026 L atm/K mol

V = ? , n = number of moles of ammonia

Temperature = 14 °C = 14 + 273 K = 287 K(0°C = 273K)

$V=\frac{2.36 mol\times 0.08206 L atm/K mol\times 287 K}{2.33 atm}=23.85 L$

The volume of the remaining gas that is ammonia is 23.85 L.

8 0

2 years ago

Read 2 more answers

I need to balance an equation

mina [271]

I inserted a picture to show u how I worked it out

3 0

2 years ago

Listed below are the amounts of mercury (in parts per million, or ppm) found in tuna sushi sampled at different stores. The s

LenaWriter [7]

Answer:

• The 90% inverval estimate of the mean amount of mercury in the population is [0.420 ppm, 1.252 ppm].

Explanation:

1) Data:

• μ = 0.836 ppm

• σ = 0.253 ppm

• z = ?

• 90% confidence interval estimate of the mean = ?

2) Finding Zo for Pr = 90%

The symmetry of the standard normal distribution implies that, for the 90% confidence interval, 5% of the values (area) are above Zo and 5% are below = - Zo.

Using technology (statistic software) or a table of the standard normal probability, you find that for Pr ≥ 0.05 means Zo ≥ 1.6045.

And, by symmetry, Pr ≤ 0.05 means Zo ≤ -1.6045.

3) Calculate the limits of the interval:

• Formula: z = ( X - μ) / σ

• Upper limit: X = zσ + μ = 1.645 (0.253 ppm) + 0.836 ppm = 1.252 ppm.

• Lower limit: X = zσ + μ = -1.645 (0.253ppm) + 0.836 = 0.420 ppm.

Then, the 90% inverval estimate of the mean amount of mercury in the population is [0.420 ppm, 1.252 ppm] ← answer

3 0

3 years ago

Explain how the crystals of an igneous rock are used to help classify it. PLEASSSEEEE HELP ME

Maru [420]

Answer:

Explain how the crystals of an igneous rock are used to help classify it. PLEASSSEEEE HELP ME

Explanation:

8 0

2 years ago

Write and balance the following equation:

rodikova [14]

Answer:

The answer is 2Al + Pb(NO3)2 ->2AlNO3 + Pb.

Explanation:

Al represents Aluminium .

Pb(II) represents Lead (Il) ions .

NO3 represents Nitrates ions .

7 0

3 years ago