example of a homogeneous mixture is:     2.65 g Citric acid (H3C6H5O4)     0.023 M KSCN (aq)     15.0 g SiO2 (sand)     0.064g Na (s) Which one?

Q: What are the different ways of separating mixtures? Explain the difference between chemical…

A: If a mixture is made by mixing water and sugar then the mixture maintains the properties of both…

Q: In a certain cement production, 100 kg of limestone containing 90% carbonates (Calcium and Magnesium…

A: We have given 90 % mass of carbonates , so first we would calculate total mass of carbonates in 100…

Q: Classify each substance by composition, first as a mixture (MX) or a pure substance (PS): zinc…

A: Zinc - pure substance  Toothpaste - mixture Corn oil - pure substance  Smog - mixture

Q: a) Given the data table: AH°† (kJ / mol) S°m (J / K mol) 5.7 C(s, graphite) CS2(g) S(g) 115.3 237.8…

A:

Q: 6. Which causes the high density of solids? a) b) c) d) The particles are more massive than those in…

A: The density of solids are high compare to liquids and gases because intermolecular force of…

Q: In one box of nails, there are 75 iron nails weighing 0.250 lb. The density of iron is 7.86 g/cm3.…

A: Given that mass of 75 nails of iron = 0.250lb = 113.4g Density of iron = 7.86g/cm3 (a) volume of…

Q: 1. In a change, one kind of matter is turned into another. 2. A chemical reaction is accompanied by…

A: "Since there are multiple sub-parts in this question so I am solving only the first three sub-parts.…

Q: After heating up in a teapot, a cup of hot water is poured at a temperature of 209°F. The cup sits…

A: Given: Ta = the temperature surrounding the object = room temp.= 68oF To = initial temperature of…

Q: Ethanol fuel mixtures have "E" numbers that indicate the percentage of ethanol in the mixture by…

A: Since, E10 is a mixture of 10% ethanol and 90% gasoline.

Q: Determine the mass of CaSO4 in the sample based on the following data to two decimal places mass of…

A: When the sample is heated the water present in the sample is evaporated and anhydrous CaSO4 is…

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A: a) sample size (n)  = 106 b) sample size when 80% of adult have heard about the brand (n)  = 68

Q: Group the characteristics of the give substance according to their physical (extensive or intensive)…

A: Answer: Extensive properties of a substance are the one, those depend upon the quantity of the…

Q: You will need grams of sodium chloride and mL of water.

A: Given :- mass of solution = 184 g                % w/w = 3.17 %  To be calculated :- mass of NaCl (…

Q: Determine the mass of the water in the sample based on the following data to two decimal places…

A: Determine the mass of water sample in the sample --

Q: cal 1.987 Leatm to atoms K mol-K Useful conversion factors 1 in = 2.54 cm 1 m 1 x109 nm %3D 1 mol =…

A: Unit conversion:-     It is a multi - step process that involves multiplication or division by a…

Q: Substances maintain their identity in a heterogeneous mixture but not in a homogeneous mixture.

A: Homogenous mixture are those mixtures in which the proportion is same throughout the mixture. We…

Q: 4. Which of the following statements best describes what happens when chocolate melts? a) This is a…

A: Physical Change - These are the changes that change the shape, size, color, state, etc. A physical…

Q: À mixture of sand, salt, and iodine was separated by first heating the mixture to drive off the…

A: The mixture contains sand, salt and iodine. Mass of dried sand and evaporating dish = 103.987 g…

Q: Note: your answer should be in the form of one or more fractions multiplied together. kJ J -9.0 x…

A: The missing parts in the question can be filled by doing the following conversion,

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: One method of manufacturing chlorine gas in a laboratory is to react manganese (IV) oxide with…

A:

Q: TABLE 2. Note that inside the coffee cup is 25 mL of distilled water (cp = 4.184 J/goC; density is…

A: The heat given off or absorbed by the system is given as q=mc∆T   In the calorimeter experiment, we…

Q: If 132 g of ice at 0.0°C is added to 1.64 L of water at 98°C, what is the final temperature of the…

A: a) Given: Mass of ice = 132 g. Initial temperature of ice = 0.0 oC Volume of water = 1.64 L = 1640…

Q: You are taking a road trip in a car without A/C. The temperture in the car is 85 degrees F. You buy…

A:

Q: 10.0 mL of a salt solution has a mass of 12.8 g. The solution is evaporated to dryness and the…

A:

Q: 1. (CH3);CCI, AICI, 2. CH;CI, AICI; 3. KMNO4, NaOH, heat 4. H, O+

A: Solution: Friedel Craft alkylation reaction: When alkyl halide treated with aromatic compounds (…

Q: What mass of natural gas (CH4)(CH4) must you burn to emit 261 kJkJ of heat?…

A: Heat of Combustion: The heat of combustion (ΔHc0) is the energy released as heat when a compound…

Q: 1 Sr(NO3)2 (aq) with 9.8 X 10" aq)? of the following is entirely 3.5 x 107, ppt forms 2.5 x 10-11,…

A: SrF2 ----> Sr2+(aq.) + 2F-(aq.) Reaction Quotient  Qsp = (6.6×10-2)(9.8×10-6)2 = 6.34 ×10-12

Q: 1. 2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g) Δ?1=−699.0 kJΔH1=−699.0 kJ 2.…

A:

Q: A chemical reaction takes place to allow hand warmers to give off heat. This is an example of a(n)…

A:

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: 1. Iron metal rusts in an atmosphere of moist air.  a. Physical Property b. Chemical Property 2.…

A: It's a multiple question type.   There are two different types of property of metals: Physical…

Q: A solution is made using 95.0 g of potassium nitrate in 300. mL of water at 70.0 ℃.  If the solution…

A: In general, as per the solubility curve of KNO3, at 70.0°C, KNO3 is completely soluble in water. But…

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A:

Q: substance reacts violently with water. The substance melts at 73.59 oC. The substance was named…

A: 1. Physical properties are used to observe and describe matter. Physical properties include:…

Q: Which of the following statements is true? Both mixtures and pure substances have variable…

A: Mixtures are basically described in 2 types such as heterogeneous as well as homogeneous.…

Q: 4 PPM Moleculan yoomula ;- G# g0

A: C5H11OCl ( DBE = 5- (11+1/2)+1 = 6-6 = 0.

Q: -H,0 10 g C,H1,06

A: Dear student I have given answer to your question in the image format.

Q: magnesium ribbon liquid A 25°C bright light water 60°C liquid B 25°C 7a What event is occuring? 8a.…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Suppose a student places a beaker on his balance and does not tare it. Then, he adds three…

A: The data given is,   Before After distilled water 57.160 g 70.990  g sodium acetate 70.990…

Q: Li metal has a high capacity (3.82 Ah/g) and energy density (11,972 Wh/Kg).

A:

Q: Sodium chloride (salt) can be synthesized from sodium metal and chlorine gas. Na (s) + Cl2 (g) →…

A: 116.88 gram of NaCl will be formed.

Q: C. Identify whether the substances listed below is an element (E), a compound (C), a Heterogeneous…

A: A substance that is made up of only one type of atom is called an element. A substance that is…

Q: A Solution is formed when two or more substances combine to yield a mixture that is homogeneous at…

A: Solution : It is the homogeneous mixture of two or more species together, it generally consists of…

Q: In a calorimetry experiment in a Chemistry for Engineers Laboratory class, a 12.9 - g sample of…

A: The addition of a certain amount of heat to a substance will alter its temperature. The change in…

Q: aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The maximum mass of sodium chloride is to be calculated

Q: A 5.00g sample of sand and salt is 75.0%w/w salt. How many grams of salt and sand are in the…

A: Mass percentage can be defined as the parts of a substance (A) per hundred parts of the total by…

Q: 1. Chocolate syrup is added to milk and stirred 2. Copper (Cu) metal (used to make wires) 3. Sand is…

A:

Q: What are the products of the following reactions?

A: Reactant have acyl chloride functional group and reagent have lewis acid aluminum chloride so this…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".