Viewed Questions
A triangular brick wall is made by cutting some bricks in half to use in the first column of every other row (see figure on the previous page).The wall has $ 28 $ rows. The top row is one-half brick wide and the bottom row is $ 14 $ bricks wide. How many bricks are used in the finished wall?
Sequences, Series, and Probability
Arithmetic Sequences and Partial Sums
The reaction of tert-butyl chloride with methanol $$\begin{aligned} &\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{Cl}+\mathrm{CH}_{3}-\mathrm{OH} \quad \longrightarrow \quad\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{OCH}_{3}+\mathrm{HCl}\\ &\text { tert-butyl chloride } \quad \text { methanol } \quad \text { methyl tert-butyl ether } \end{aligned}$$ is found to follow the rate equation $$\text { rate }=k_{\mathrm{r}}\left[\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{Cl}\right]$$ (a) What is the kinetic order with respect to tert-butyl chloride? (b) What is the kinetic order with respect to methanol? (c) What is the kinetic order overall?
The Study Of Chemical Reactions
Kinetics And The Rate Equation
When $\mathrm{Na}_{3} \mathrm{PO}_{4}$ and $\mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2}$ are combined, the following reaction occurs: $$ 2 \mathrm{PO}_{4}^{3-}(a q)+3 \mathrm{Ca}^{2+}(a q) \longrightarrow \mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(s) $$ How many grams of $\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}(s)(\mathrm{MM}=310.18 \mathrm{~g} / \mathrm{mol})$ are obtained when $15.00 \mathrm{~mL}$ of $0.1386 \mathrm{M} \mathrm{Na}_{3} \mathrm{PO}_{4}$ are mixed with $20.00 \mathrm{~mL}$ of $0.2118 \mathrm{M} \mathrm{Ca}\left(\mathrm{NO}_{3}\right)_{2} ?$
A $50.00-\mathrm{mL}$ sample of $0.0250 \mathrm{M}$ silver nitrate is mixed with $0.0400 \mathrm{M}$ chromium(III) chloride. (a) What is the minimum volume of chromium(III) chloride required to completely precipitate silver chloride? (b) How many grams of silver chloride are produced from (a)?
Questions asked
f(x) = 6[[x]]+6
Aparna Shakti
Numerade educator
if 1=105, 2=110, s1=10, s2=11,n1=50, and n2=60. Using a left-tailed test of the difference of the means. what is the value of T?
Willis James
What is the margin of error for a 95% confidence interval of μ1-μ2 if s1 = 5, s2 = 4, n1=51, n2 = 61, x̄1= 30, and x̄2 = 25?
Chareen Guzman
the equilibrium constant for the reaction 2HF(g)⇌H2(g)+F2(g) is 0.200 at a particular temperature. what is the equilibrium constant for the equation : 1/2 H(g) + 1/2 F2(g)⇌HF(g)
Narayan Hari
At what temperature, in °C, is a certain reaction at equilibrium if ∆H = +90.0 kJ/mol and ∆S = +170.2 J/mol ･ K?
Ronald Prasad
What is the pH of a 0.740 M solution of NaCN (Ka of HCN is 4.9 × 10⁻¹⁰)?
Sima Sarker
An unknown weak acid with a concentration of 0.340 M has a pH of 5.600. What is the Ka of the weak acid?
David Collins
at a particular temp. the solubility of H2 in water is 0.200 M when the parish partial pressure is 0.0900 atm. what will be the solubility when the pressure of h2 is 0.94 atm
Dominique Jan Tan
the percent bby mass of phenol mm= 94.11 in an aq solution is 21.5 % . what is the molality of the phenol solution?
Given ∆H° = +90.7 kJ/mol and ∆S° = +221.0 J/mol･K, determine ∆G° for the reaction CH₃OH(g) → CO(g) + 2 H₂(g) at 25.0 °C?