Introductory Chemistry Essentials 5th. Edition by Nivaldo J Tro | 9781292061337 | 1292061332 | Holooly

Intro to Chemical Engineering

Introductory Chemistry Essentials

286 SOLVED PROBLEMS

Question: A.FP.3

Perform each of the following operations: (a) log 1.0 × 10^5 (b) log 59 (c) log 1.0 × 10^-5 (d) log 0.068 (e) invlog 7.0 (f) invlog 1.44 (g) invlog -6.0 (h) invlog -0.250 (i) invlog (log 88) ...

Verified Answer:

(a) 5.00 (b) 1.77 (c) -5.00 (d) -1.17 (e)

1...

Question: A.FP.2

Perform each of the following operations: (a) (2.1 × 10^7)(9.3 × 10^5) (b) (5.58 × 10^12) (7.84 × 10^-8 ) (c) (1.5 × 10^14)/(5.9 × 10^8) (d) (2.69 × 10^7)/(8.44 × 10^11) (e) 1.823 × 10^9 +1.11 × 10^7 (f) 3.32 × 10^-5 +3.400 × 10^-7 (g) 6.893 × 10^9 -2.44 × 10^8 (h) 1.74 × 10^4 -2.9 × 10³ ...

Verified Answer:

(a)

2.0 \times 10^{13}

(b)

4...

Question: A.FP.1

Solve each of the following for the indicated variable: (a) P1V1 = P2V2; solve for V (b) V1/T1 = V2/T2; solve for T1 (c) PV = nRT; solve for n (d) K = °C + 273; solve for °C (e) 3x + 7/2 = y; solve for x (f) 32/y + 3 = 8; solve for y ...

Verified Answer:

(a)

V_{2}=\frac{P_{1} V_{1}}{P_{2}}

...

Question: 17.10

Some wood ashes from a fire pit in the ruins of an ancient village have a carbon-14 content that is 25% of the amount found in living organisms. How old are the ashes and, by implication, the village? ...

Verified Answer:

\begin{array}{lcc} \hline \text { C-14 }(\...

Question: 17.9

Po-210 is an alpha emitter with a half-life of 138 days. How many grams of Po-210 remain after 552 days if the sample initially contained 5.80 g of Po-210? ...

Verified Answer:

\begin{array}{lcc} \hline \text { Mass of ...

Question: 17.8

Write the nuclear equation for the positron decay of C-11. ...

Verified Answer:

{ }_{6}^{11} \mathrm{C} \longrightarrow{ }_...

Question: 17.7

Write the nuclear equation for the beta decay of Bi-214. ...

Verified Answer:

{ }_{83}^{214} \mathrm{Bi} \longrightarrow{...

Question: 17.6

Write the nuclear equation for the alpha decay of Po-214. ...

Verified Answer:

{ }_{84}^{214} \mathrm{Po} \longrightarrow{...

Question: 17.5

A skull believed to belong to an early human being is found to have a carbon-14 content of 3.125% of that found in living organisms. How old is the skull? ...

Verified Answer:

Examine Table 17.3 to determine that a carbon- 14 ...

Question: 17.4

How long does it take for a 1.80-mol sample of Th-228 (which has a half-life of 1.9 years) to decay to 0.225 mol? ...

Verified Answer:

Draw a table showing the amount of Th-228 as a fun...

Loading...