Inorganic Chemistry Questions

1. Energy due to position or composition 2. Number placed in front of a symbol or formula 3. Number within a chemical formula 4. The substance used up in a chemical reaction 5. Energy due to motion A subscript B coefficient C potential D kinetic E reactant

1.000 mol of CH3CH₂OH gas is combusted with 2.000 mol of O₂ gas in a container of constant volume and temperature and the pressure increases from 1.500atm to 1.551atm. What is the % yield?

1. Describing a substance without using numbers 2. The exactness of a measurement to the accepted value 3. Condition in an experiment that is measured or controlled 4. Closeness of measurements of an object to one another 5. Describing a substance using numbers and measurements A accuracy B precision C qualitative D quantitative E variable

The objective measure of social class uses either education, income, occupation or place of residence, Individually. To overcome the problem of status inconsistency associated with this measure, researchers often combine several of them to derive people's ..... occupational prestige economic class position socio-economic status (SES) political affiliation

Convert the following statement into a yes-no question: The League of Women Voters provides information about elections. Does the League of Women Voters provide information about elections? Did the League of Women Voters provide information about elections? Do the League of Women Voters provide information about elections? Does the League of Women Voters provides information about elections?

Convert the following statement into an information question: CCA provides great educational opportunities for ESL students. (What) What does CCA provide for ESL students? What provides CCA for ESL students? What does CCA provides for ESL students? Why does CCA provide great educational opportunities for ESL students?

What mass of chromium would be produced from the reaction of 57.0 g of potassium with 199 g of chromium(II) bromide according to the following reaction? b) Which reactant is in excess and how many grams of this reactant are left over?

Convert the following sentence into a negative statement: Barack Obama will return to Hawaii when he leaves the White House. Barack Obama will not return to Hawaii when he leave the White House. Barack Obama will not return to Hawaii when he leaves the White House. Barack Obama do not return to Hawaii when he leaves the White House. Barack Obama does not return to Hawaii when he leaves the White House.

(after) It snows tomorrow. The snow plows will clean the streets. After the snow plows will clean the streets, it snows tomorrow. The snow plows will clean the streets, after it snows tomorrow. After it snows tomorrow the snow plows will clean the streets. After it snows tomorrow, the snow plows will clean the streets.

Fatima and Agnes first met in ESL Class. (main) It was at Aurora Central High School. (adj) Fatima and Agnes who was at Aurora Central High School first met in ESL Class. Fatima and Agnes who first met in ESL Class was at Aurora Central High School. Fatima and Agnes first met in ESL Class which was at Aurora Central High School. Aurora Central High School was where Fatima and Agnes first met.

I had many great teachers in high school. (main) They are all very old now. (adj) I had many great teachers who are all very old now in high school. I had many great teachers in high school which are all very old now. I had many great teachers in high school whose are all very old now. I am very old now but I had many great teachers in high school.

Choose the option that best completes the sentence. The author lists all of the following as reasons to play games, except_ A) learning or practicing a new skill B) interacting with others C) getting out of the house D) having fun

At the end of the presentation about endangered wildlife, the participants were directed to a box in which they could give donations to the efforts. A) contribute B) imposition C) voluntary D) advocate E) interact F) finite G) mature

The team of oceanographers had to limit the scope of their research because there was a amount of funds available for the project. A) contribute B) voluntary C) mature D) imposition E) advocate F) finite G) interact

List and describe your favorite lift from this lesson or your own personal experience. 2 Search Google (or other search engine) and search "body weight exercises" and try them out. Describe your experience with at least one of them. 3 Discuss how you will (or are already) using body weight exercises in your life.

Choose the option that best completes each sentence. The author states all of the following except A) the history of violence and taking risks teaches us how to prolong our ives B) artists often talk about previous artists' influence on their work C) we cannot learn from the history of governments and politics D) we can learn how to preserve our environment by learning from previous mistakes

Currently, there are several television programs dedicated to criminal investigation scenarios. Viewers can learn about forensics, investigation strategies, procedure, etc. What effect might these kinds of shows have on future investigators? On future criminals?

If you had the opportunity to travel into outer space or to the ocean's floor, which would you choose? Why? What do you imagine would be the best and worst parts of your journey?

George was afraid to with the other children, so he hid in the corner until it was time to go home. A) imposition B) advocate C) contribute D) finite E) voluntary F) interact G) mature

Because of several differences in preferences, they gave up on the idea of marketing to both older people and teenagers. A) generational B) site C) consult D) albeit E) linked F) tape G) abandon

Calculate the energy change for the reaction Hint: Use Ionization Table and first Electron Affinity table. A. 124 kJ/mol B. -715 kJ/mol C. 715 kJ/mol D. 1429 kJ/mol

What is the molarity of a solution that contains 41.0 g of ZnCl₂ dissolved in 3.00 L of solution?

Consider the following equation: __K + H₂O → KOH +__H₂ (l) a. If 193 g of water react with 85.8 g of potassium, which is the limiting reactant? (1) b. What mass of hydrogen gas can be produced? (1) c. What mass of the excess reactant remains after the reaction has gone to completion? (1) d. If 1.2 g of hydrogen gas is recovered, what is the percent yield? (1)

Boron sulfide, B2S3(s), reacts violently with water to form an aqueous solution of boric acid (H3BO3) and hydrogen sulfide gas. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

Propane C3Hg is a source of fuel for gas barbecues. The Lewis structures showing the reaction for propane combustion is shown and the balanced reaction is also provided. Use the table of bond energies to calculate ΔHrxn

Phosphine, PH3(g), combusts in oxygen gas to form water vapor and solid tetraphosphorus decaoxide. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

Copper metal reacts with a hot aqueous sulfuric acid solution to form aqueous copper(II) sulfate, sulfur dioxide gas, and liquid water. Express your answer as a balanced chemical equation. Identify all of the phases in your answer.

Helium is a gas that is less dense than air. So, helium is often used to fill balloons to make them float. The chemical formula for helium is He. Complete the statement. Helium is

A solution is made by mixing equal volumes of 0.200 M HC₂H3O2 and 0.400 M NaC₂H3O2. Which of the following correctly describes what occurs if a small amount of HCI (aq) or NaOH (aq) is added? If HCI (aq) is added, the pH will increase only slightly because the Cl- ions will react with C₂H3O2 ions. If NaOH (aq) is added, the pH will decrease only slightly because the OH- ions will react with HC₂H3O2. If NaOH (aq) is added, the pH will increase only slightly because the OH ions will react with the C₂H3O2- ions. If HCI (aq) is added, the pH will decrease only slightly because the H+ ions will react with C₂H3O2 ions.

Rubbing alcohol sold in stores is aqueous 2-propanol, CH,CHOHCH₂(aq). Rubbing alcohol is available in concentrations of 70.% and 91% 2-propanol by volume. To make 100. mL of 70.% aqueous 2-propanol, 70. mL of 2-propanol is diluted with enough water to produce a total volume of 100. mL. In a laboratory Investigation, a student is given a 132-mL sample of 91% aqueous 2-propanol to separate using the process of distillation. Determine the maximum volume of 2-propanol in the 132-mL sample.

The electron configurations of two unknown elements X and Y are shown. X: 1s²2s²2p6 Y: 1s22s22p63s23p6 Which statement is most likely correct about the two elements? (1 point) They will not react because both will give up one electron to become stable. They will react because X and Y can share two pairs of electrons to become stable. They will react because X can give up two electrons and Y needs two electrons to become stable. They will not react because both have a complete outermost shell and are stable.

Match the outer electron configuration with the element classification. Choose the best answers. ns²np6 1. reactive metal ns² np5 2. reactive nonmetal ns² 3. metalloid ns²np² 4. unreactive nonmetals

A metal has a work function (also called binding energy) of 5.98 x 10-19 J. Which is the longest wavelength that could cause emission of electrons? Insert your answer in decimal notation, rounded to three significant figures.

The hydrogen emission spectrum exhibits a line at 2.6630x10-20 J. If the final quantum state is n = 5, what is the initial quantum state of the transition corresponding to this line?

(a) What is the mass, in grams, of 2.50 x 10³ mol of ammonium phosphate? (b) How many moles of chloride ions are in 0.2550 g of aluminum chloride? (c) What is the mass, in grams, of 7.70 x 1020 molecules of caffeine, C₂H₁N₂O₂? (d) What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.406 g?

A student performs the experiment and records the following data: Barometric pressure: 741.6 torr Temperature of water bath: 99 °C Volume of flask: 273 mL Mass of condensed vapor: 0.65 g a. The student calculates the molecular weight of the gas to be 2.6 x 10-5 g/mol. What mistake did he make?

Without doing any detailed calculations (but using a periodic table to give atomic weights), rank the following samples in order of increasing numbers of atoms: 42 g of NaHCO3, 1.5 mol CO2, 6.0 X 10²4 Ne atoms.

A key step in balancing chemical equations is correctly identifying the formulas of the reactants and products. For example, consider the reaction between calcium oxide, CaO(s), and H₂O(1) to form aqueous calcium hydroxide. (a) Write a balanced chemical equation for this combination reaction, having correctly identified the product as Ca(OH)₂(aq). (b) Is it possible to balance the equation if you incorrectly identify the product as CaOH(aq), and if so, what is the equation?

Balance the following equations: (a) Al C₂(s) + H₂O(l) → Al(OH),(s) + CH₂(g) (b) C5H₁0O₂(1) + O₂(g)--CO₂ (g) + H₂O(g) (c) Fe(OH),(s) + H₂SO₂(aq)--Fe₂(SO₂),(aq) + H₂O(1) (d) Mg N₂(s) + H₂SO4(aq) → MgSO.(aq) + (NH₂)2(SO4) (aq)

Combustion analysis of a sample is used to determine that there were 1.54 mole carbon, 5.78 molesHydrogen and 0.771 mole oxygen in the original sample. If the molar mass of the compound is approximately 285 g/mol, what is the molecular formula? C10H6906 C12H45O6 C13H3306 C12H77O4 C12H2907

A 12.88 gram sample is known to contain only carbon, hydrogen and oxygen. Combustion analysis of the sample produces 29.1972 g of CO₂ and 14.6970 g of H₂O. Determine the carbon, hydrogen and oxygen moles in the original sample.

An unknown solution gives a yellow-green flame test, and a white precipitate with ammonium carbonate, ammonium phosphate, and ammonium sulfate. The halide test produces a yellow-orange color in the upper hexane layer. Identify (a) the alkali or alkaline earth element, and (b) the halide present in the unknown solution.

A sample of TNT, C₂H5N₂06, has 7.68 1021 nitrogen atoms. How many hydrogen atoms are there in this sample of TNT? Select one: a. 1.28-1022 b. 1.79-1022 c. 10.24 10²1 d. 1.54 1022 e. 7.68 1021

Zinc sulfide reacts with oxygen according to the reaction: 2 ZnS(s) + 3 O₂(g) → 2 ZnO(s) + 2 SO2(g) A reaction mixture initially contains 4.2 mol ZnS and 6.8 mol O2. Once the reaction has occurred as completely as possible, what amount (in moles) of the excess reactant remains?

Which of the following best]describes the requirements for becoming a Supreme Court Justice? * Must be a lawyer from Harvard Must be an American citizen There are no specific requirements for becoming a Supreme Court Justice Must be at least 45 years old

M (Alkali metal) +(X+Y) NH3 → [M(NH3)x]* +[e(NH3)y] Mark the incorrect statement about the solution solution has high electric conductivity due to ammoniated electrons dilute solution imparts copper Bronze colour Dilute solution is paramagnetic On the addition of substances like 'Iron' the solution decomposes and releases H₂ gas

Property of the alkaline earth metal that increases with increase in their atomic number. Solubility of their hydroxides. Decomposition temperature of their carbonates. Solubility of their sulphates. Basic character of their oxides.

When do we use Simple Progressive Tense? A) To describe actions happening over a current time period (this semester) B) To describe routines and habits C) To describe temporary actions D) With adverbs "usually," "often," and "sometimes" E) A and C

What is the molar mass of Co₂O3 in the following balanced chemical equation: 2 C0₂03(s) + 3 C(s) ---> 4 Co(s) + 3 CO2(g) Hint: Coefficients are NOT used when determining molar masses. 74.93 g/mol 133.87 g/mol 165.86 g/mol 331.73 g/mol 208.80 g/mol

In lab, you are given a solid sample containing 10.5 grams of MgBr2 (Molar mass = 184.113 g/mol) How many bromine atoms are present in the sample? 3.43 x 1022 bromine atoms 6.87 x 1022 bromine atoms 1.72 x 1022 bromine atoms 1.06 x 10^25 oxygen atoms