Inorganic Chemistry Questions

Watch the video to determine which of the following relationships are correct according to Boyle's law. Check all that apply. V ∝ P P ∝ 1/V V ∝ 1/P PV ∝ V PV ∝ P P ∝ V

Write the empirical formula of at least four binary ionic compounds that could formed from the following ions: Ca²+, Cr4+, I-, O²-

At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.96 mol of oxygen gas in the vessel? Express the volume to three significant figures, and include the appropriate units.

Consider a 9.02 g sample of C3H6. How many atoms of C would be in this sample?

A photon having a wavelength in eV. (1 eV = 1.602 x 10^-19 J) of 437 nm strikes a metal surface having a threshold frequency of 3.23 x 10^14 Hz

Antacids are often used to relieve pain and promote healing in the treatment of mild ulcers. Write balanced net ionic equations for the reactions between the HCl(aq) in the stomach and each of the following substances used in various antacids. MgCO3(s)

How many grams of Rb are there in a sample of Rb that contains 1.07×10^24 atoms?

Considering periodic trends, valence electrons in which of the following atoms experience the greatest effective nuclear charge (Zeff)? A) CI B) C C) F D) Ne E) B

When the following solutions are mixed together, what precipitate (if any) will form? Note: Leave the answer blank if no precipitate will form. (Express your answer as a chemical formula.) KCl(aq) + NaNO3(aq) → CaCl₂(aq) + Na3PO4(aq) → NaOH(aq) + Fe2(SO4)3(aq) →

Consider a 8.12 g sample of C4H10. How many molecules are in this sample?

Concentrated hydrochloric acid is an aqueous solution that is 35.00 % HCI. The density of the solution is 1.19 g/mL. What mass of HCI is contained in 0.545 L of solution?

When aqueous solutions of lead(II) nitrate and potassium carbonate are combined, solid lead(II) carbonate and a solution of potassium nitrate are formed.

Complete the table below. For example, in the first row decide whether Sc is a cation or anion. In the second row, write the symbol for the ion that an atom of cesium is mostly likely to form and then decide what type of ion it is.

The daily output of stomach acid (gastric juice) is 1000 mL to 2000 mL. Prior to a meal, stomach acid (HCl) typically has a pH of 1.42. (10.5, 10.6) a. What is the [H3O+] of stomach acid? b. One chewable tablet of the antacid Maalox contains 600. mg of CaCO3. Write the neutralization equation, and calculate the milliliters of stomach acid neutralized by two tablets of Maalox. c. The antacid milk of magnesia contains 400. mg of Mg(OH)2 per teaspoon. Write the neutralization equation, and calculate the number of milliliters of stomach acid neutralized by one tablespoon of milk of magnesia (one tablespoon = three teaspoons).

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile's engine cooling system. If a car's cooling system holds 4.90 gal, what is the boiling point of the solution? For the calculation, assume that at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Also, assume that the engine coolant is pure ethylene glycol (HOCH, CH₂OH), which is non-ionizing and non-volatile, and that the pressure remains constant at 1.00 atm. The boiling-point elevation constant for water will also be needed.

Which statement best describes the polarity of SCl4F₂? ► View Available Hint(s) The molecule is always polar. The molecule is always nonpolar. Depending on the arrangement of outer atoms, this molecule could be polar or nonpolar.

Cyclohexene reacts with oxygen to produce carbon dioxide and water by the following balanced chemical reaction. 2 C6H10(l) + 17 O2 (g) → 12 CO2 (g) + 10 H₂O (l) a. If 59.0. grams of O2 is reacted with 24.5 grams of C6H10, which is the limiting reagent? Limiting reagent b. How many grams of H20 will be produced? Grams If 10.2 grams of H₂O are produced, what is the % yield for the reaction? % yield (10 points)

A solution of 0.263 M HCI is added to a buffer system containing 0.50 M acetic acid and 0.50 M sodium acetate. Find the pH of the solution. The K, of acetic acid is 1.8 x 10¹5. (show answer as a decimal to 3 significant digits) pH =

Dichlorobenzene, C6H4Cl2, exists in three forms (isomers), called ortho, meta, and para: Which of these has a nonzero dipole moment? Drag the appropriate items to their respective bins.

Which one of the following is the best scientific description of "burning calories"? Calories are removed from fats leaving carbon dioxide and water behind. None of these statements is correct. Fats, proteins or carbohydrates are converted into gases. Stored nutrients are converted into carbon dioxide and water accompanied by heat release. Calories in a solid form are converted to calories in a vapor form. Glycogen combines with carbon dioxide to yield oxygen.

LDL receptors are found only in the heart. None of these responses is correct. found in the nucleus of cells. protein molecules on the surface of cells. easily oxidized. openings in cell membranes through which cholesterol can pass.

Consider the acid H3PO4. This acid will react with water by the following equation. H₂PO4 + H₂<=> H₂PO4 + H₂O What will be true of the resulting conjugate base H₂PO4? Select the correct answer below: H₂Pcan act as an acid. H₂Pcan act as a base. H₂PO4 can act as an acid or a base. depends on the substance

Which one of the following concerning the genetically modified purple tomato is correct? It has been modified to have a higher content of lycopene. It was created by crossbreeding red tomatoes with plums. It has been modified to have a higher level of anthocyanins. It is only on the market in Canada. It has been modified to produce the Bt toxin. None of these statements is correct.

Benzopyrene is a carcinogenic polycyclic aromatic hydrocarbon and None of these responses is correct. is an anti-carcinogen. is a breakdown product of pesticides. forms when certain foods are heated to a high temperature. is by far the main pollutant produced by automobiles. can act as a hormone.

Which one of the following statements best describes why champagne is extremely bubbly? None of these responses is correct. Fermentation takes place in a closed bottle to retain the CO2 produced. After fermentation is completed, CO2 is added to a closed bottle. A secondary fermentation produced from sugar and yeast takes place in a closed bottle. Fermentation is started by adding CO2 to a closed bottle. Fermentation takes place in large vats and CO2 gas is then added to the wine.

Which of the following correctly represents the second ionization of aluminum? A) Al+ (g) + e-> Al(g) B) Al+ (g) +e-> AIR+ (g) C) Al- (g) + e- > A12- (g) D) Al+ (g) > A12+ (g)+e- E) AI (g) > Al+ (g) + e-

Percival Pott None of these responses is correct. was the first to design a randomized double-blind trial for carcinogens in food. showed that meat cooked at a high temperature was carcinogenic. described the possibility of cancer being linked to an occupation. carried out the first cohort study on cancer. linked smoking to lung cancer.

Use formal charges to determine the best Lewis structure for ethene, C₂H4. Which of the following statements applies to the structure? Select all that apply. The structure contains one or more double bonds. Two or more resonance structures are possible. The central element has an expanded octet. One or more atoms does NOT follow the octet rule. The formal charges of all atoms in the compound are all zero.

A 7.12 x 10-4 mol sample of KOH is dissolved in water to make up 50.0 mL of solution. What is the pH of the solution at 25.0°C? Round the answer to three significant figures. Select the correct answer below: 12.2 1.85 15.85 10.9

Greenhouse gases Greenhouse gases allow visible light to pass through and warm the Earth's surface, and also allow heat energy to radiate back out into space. Greenhouse gases prevent visible light from passing through and cooling the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases allow visible light to pass through and cool the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases prevent visible light from passing through and warming the Earth's surface, and prevent heat energy from radiating back out into space. Greenhouse gases allow visible light to pass through and warm the Earth's surface, and prevent heat energy from radiating back out into space.

Which of the following statements explains the correct reasoning for the use of molality (rather than molarity) in this equation? a) As the temperature of a solution changes, its volume will also change, which will affect its molarity but not its molality. b) In solutions, moles are not directly related to grams and the boiling point of a solution is dependent solely on the number of grams of solute. c) The equation was originally published with m as a typo, rather than M, but the values are close enough that the equation is still valid. d) Molality does not appear in many equations, so it is used here to distinguish this equation from other similar ones.

After the final reaction in the copper cycle, the copper solid was rinsed with water and then ethanol. What was being removed from the copper in this process? The equation for the final reaction is given below. Would compounds from previous reactions (not this final reaction) also be removed? 3CuSO4 (aq) + 2Al(s) → 3Cu(s) + Al₂(SO4)3(aq)

Gold is a/an element compound homogeneous mixture heterogeneous mixture

What is the GHS classification of the substance or mixture for aluminum? Select all that apply. Flammable solids Aquatic toxicity or aquatic toxicity Specific target organ toxicity - repeated exposure Respiratory sensitisation Eye irritation Not a hazardous substance or mixture Reproductive toxicity Skin sensitisation Oral toxicity Carcinogenicity

The density of osmium (the densest metal) is 22.57 g/cm³. What volume would be occupied by 1.67 kg of osmium?

What kind of intermolecular forces act between a methanol (CH3OH) molecule and a hydrogen fluoride molecule?

If the temperature of a bowl of ice cream increases from -10°C to 25°C, what is the increase in temperature in units of degrees Celsius and Kelvin? 15°C, 288 K 35°C, 308 K 35°C, 273 K 35°C, 35 K 15°C, 273 K

The ability to see light scattering when passed through a colloidal suspension is known as ... an emulsifying agent effect. a particle size scattering effect. the dispersing effect. the Tyndall effect.

An atom of element number 33 (As) is in its ground electronic state. Which one of the following sets quantum numbers could not apply to any of its electrons?

Alisha went to the doctor and got her blood calcium levels measured. If her blood calcium is 9.1 mg/dL. How many total grams of calcium are present in her bloodstream? (Alisha has a total blood volume of 3.7 L.)

Draw the Lewis structure for CSe2 in the window below and then answer the questions that follow.

For the following reaction, 27.5 grams of diphosphorus pentoxide are allowed to react with 14.7 grams of water. diphosphorus pentoxide (s) + water (l) -> phosphoric acid (aq) What is the maximum amount of phosphoric acid that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete?

Balance the following redox reaction in basic solution. Br (aq) + N₂(g) → Br₂()+N₂H₂(aq)

Draw the Lewis dot structure for the compounds below. Determine the electronic structure and molecular geometry of those compounds by referring to their Lewis dot structures, the basics sheet provided and your text: a. oxygen difluoride (OF2): b. dinitrogen monoxide (N₂O): c. phosphorus trifluoride (PF3): d. formaldehyde (CH₂O): e. carbon tetrafluoride (CF4):

Gaseous methane (CH4) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). What is the theoretical yield of carbon dioxide formed from the reaction of 3.8 g of methane and 9.2 g of oxygen gas?

For the molecular compound sulfur dichloride, what would you multiply "molecules of SC12" by to get the units "moles of SC1₂" ?

Nitrogen monoxide reacts with oxygen to form nitrogen dioxide 2NO+O₂ -> NO2 ΔH = -114.1 kJ/mole a) What is the enthalpy change when 1.25 g of NO are converted completely to NO₂? b) Is this reaction endothermic or exothermic? How do you know?

The citric acid in a lemon juice sample was neutralized by titration with a NaOH solution. H3C6H5O7 + 3 NaOH Na3C6H507 + 3 H₂O If 5.00 mL of lemon juice required 47.8 mL of 0.121 M NaOH for neutralization, what was the molarity of the citric acid in the lemon juice?

Your task is to write the chemical formula from each name on your work page. You should show some work to justify the answers but do not need to write a lengthy explanation. You will first match the name to the compound type and then write down the formula on your work page. > bartic acid maggoburnsic acid dinedogen pentaburnside homerium(III) nedtite milhouseum bartine 1. Acid 2. lonic compound 3. Molecular compound

Total number of CORRECT orders is :- (i) PbO₂ > PbO (oxidising strength) (ii) SiO₂ < NaCl (Melting point) (iii) Agl > AgCl (Colour intensity) (iv) ZnCl₂ < HgCl2 (Degree of ionisation in aqueous solution) (v) Na₂CO3 < MgCO3 (Temperature required for thermal decomposition)