For the reaction shown, calculate the theoretical yield of the product (in grams) for each initial amount of reactants. $\mathrm{Ti}(s)+2 \mathrm{F}_{2}(g) \longrightarrow \mathrm{TiF}_{4}(s)$, a. 5.0 g Ti, 5.0 g $F_2$, b. 2.4 g Ti, 1.6 g $F_2$, c. 0.233 g Ti, 0.288 g $F_2$.

Dinitrogen pentoxide is a product of the reaction between $\mathrm{P}_4 \mathrm{O}_{10}$ and $\mathrm{HNO}_3$. Write a balanced equation for this reaction. Calculate the theoretical yield of $\mathrm{N}_2 \mathrm{O}_5$ if $79.4 \mathrm{~g}$ of $\mathrm{P}_4 \mathrm{O}_{10}$ is combined with an excess of $\mathrm{HNO}_3$. (Hint: One of the products is $\mathrm{HPO}_3$.)

Are either the first or second reflections diffuse reflections? Explain.

For the reaction shown, compute the theoretical yield of the product (in grams).

Ti(s)+2F2(g) ->TiF4(s)

7.0g Ti, 7.0g F2 Express your answer using two significant figures.

What is the ratio of protons to neutrons in lead-214? Explain whether you would expect this isotope to be radioactive or stable.

Using what you have reamed about emotions in the chapter respond to the following statement; Men feel fewer emotions than women.

Regarding increasing productivity, factor mobility is:

A. Important in that it helps to fix a stable labor-intensive production process.

B. Not important in either a state or dynamic economy.

C. Important in that it helps to reallocate resources in a dynamic economy.

D. Important in that it helps to fix a stable capital-intensive production process.

A chemist adds $3.00 \mathrm{~g}$ of zinc to a solution containing an excess of silver nitrate. Only $7.2 \mathrm{~g}$ of silver metal is collected by the end of the investigation.

(a) Write a balanced chemical equation for the reaction.

(b) Determine the theoretical yield of silver metal.

(c) Determine the percentage yield of this reaction.

When heated, lithium reacts with nitrogen to form lithium nitride:

$$6 \mathrm{Li}(s)+\mathrm{N}_2(g) \longrightarrow 2 \mathrm{LiN}_3(s)$$

What is the theoretical yield of $\mathrm{LiN}_3$ in grams when $12.3 \mathrm{~g}$ of $\mathrm{Li}$ are heated with $33.6 \mathrm{~g}$ of $\mathrm{N}_2$ ? If the actual yield of $\mathrm{LiN}_3$ is $5.89 \mathrm{~g}$, what is the percent yield of the reaction?

What is the theoretical yield of chloroethane in the reaction of 19.4 g of ethene with 50 g of hydrogen chloride? What is the percent yield if 25.5 g of chloroethane is actually formed?

$$\mathrm{H}_2 \mathrm{C}=\mathrm{CH}_2+\mathrm{HCl} \longrightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Cl}$$

Find the sum of the first 80 positive even integers.

Determine if the event described in each of the following situations would cause a $\bold{recognition\ lag}$, an $\bold{implementation\ lag}$, or an $\bold{outside\ lag}$. a. The president and Congress spend months debating whether to increase spending or cut taxes to help the economy out of a recession. b. There is a debate among economists and government officials about the severity of the problems facing the economy. c. Even after expansionary policy actions have been taken by the government, the economy is slow to come out of the recession.

For the flat tension bar with stepped cross section shown in Fig. , the hole is centered in the wide portion of the bar and the fillets are quarter circles. Let $D=$ 4 in., $d=2.5$ in., and $t=0.5$ in. for this bar, and let the maximum axial load be $P=10$ kips. What is the maximum hole radius and what is the minimum fillet radius that may be accommodated if the maximum normal stress in the bar is not to exceed $\sigma_{\max }=18 \mathrm{ksi}$ ? Select radii that are multiples of $0.05 \mathrm{in}$.

Calculate the extensions for these purchases:

50 reams of printer paper at $5.95 each, 36 pens at$2.20 each, and 24 printer cartridges at $32 each.