A sample of 15.00 g of a hydrated sodium sulfate salt contains 7.05 g of water. The value of the "x" in the hydrated salt is:  NaSO4 . xH2O    Answers:  a)7  b)10  c)1  d)3  e)5

Q: Write the correct answer with 1 place after the decimal point.   What is the molecular mass of…

A: What is the molecular mass of C10(N1O1]3?

Q: he balanced equation for a s'more shown below for the following questions. 2 GS + 1 MM+3CS → 1 SM GS…

A: Limiting reactant is the reactant that limits the formation of products. It gets consumed in the…

Q: A mixture has 24 grams of salt and 36 grams of sugar. What is the percenta salt in this mixture?*…

A:

Q: PbCO3(s)→PbO(s)+CO2(g)PbCO3(s)→PbO(s)+CO2(g) Express your answers as integers separated by commas

A: Note: Assuming that the question is to balance the given reaction.

Q: 3.34×1022 HeHe atoms Express your answer using three significant figures.

A:

Q: 9. How many moles are there in 45.0 grams of sulfuric acid, H2SO4? moles Your answer should be…

A: 1 mole of H2SO4 contains 98.079 g. In other words, molar mass of H2SO4 is 98.079 g/mol.

Q: 4. Which is not a physical change? a. Melting of candle      c. breaking a glass b. Digestion of…

A: We will answer the first question since the exact one wasn't specified. Please submit a new question…

Q: Ammonium phosphate ((NH) PO4 is an important ingredient in many fertilizers. It can be made by…

A: The balanced chemical equation between ammonia and phosphoric acid is given by

Q: The representation of atoms below best represents a mixture of ____ different pure element(s) and…

A: Applying definition of pure substance and compounds we can determine the components in the…

Q: Which represents the greatest number of atoms? Group of answer choices 15 g of Cu 15 g of Zr 15 g of…

A: no. of atoms in Cu = 15 X 6.023X1023/ 63.5 = 1.42 X 1023 no. of atoms in Zr = 15 X 6.023X1023/ 91.22…

Q: MCQ 27: Alcohol (C,HOH) with lowest molecular mass at room temperature is A. solid B. liquid C. gas…

A: An alcohol can be defined as an aliphatic system in which one or more hydroxyl group(s) are directly…

Q: A classic SUV features a 207 L gas tank. Assuming a molecular formula of C8H18 for gasoline and…

A: Given : volume of gas tank = 207 L  Molecular formula for gasoline = C8H18 Density = 762 g /L  To…

Q: How much does it weigh in grams

A:

Q: (MC) A student who likes the taste of salt adds 1.50 moles of sodium chloride (table salt) to her…

A: Given : Moles of sodium chloride i.e NaCl = 1.50 mol.

Q: ress your answer using four significant figures. ΑΣΦ ? -H = 28.19 kJ mol-1 ubmit Previous Answers…

A: Massof the hydrocarbon naphthalene (C10H8 ) = 1.094 g of naphthalene  Temperature change =  25.918…

Q: Part A The American Dental Association recommends that an adult female should consume 3.0 mg of…

A:

Q: iple Choice: In kilogram(s), what is the mass of 3 moles of platinum?  a. 0,69 b. 0,59 c. 0,79

A: Mole is defined as the unit which relates the amount of the substance with a number of atoms present…

Q: hic be sure your answer nas the correct sign! CH4 + 202 --> CO + 2H20 AH = -803 kJ/mol OR C H4+2 02…

A:

Q: When the following equations are balanced using the smallest possible integers, what is the number…

A:

Q: d. Given that 6.02 x 1023 ethanol molecules have a mass of 46.04 g, calculate the number of ethanol…

A: Number of molecules of ethanol in the film can be calculated from the mass of ethanol in the film.

Q: 4) ½N2(g) + 02(g)= NO2(g) Kc = 1.04 x 10-9 N2(g) + 202(g)= N204(g) Kc = 7.42 x 10-18 Calculate Kc…

A:

Q: A chemist is trying to identify an unknown metal, and finds that 25.0 cm³ of the substance has a…

A: Given: Volume of the metal, V=25 cm3 Mass of the metal, m=224.43 g Temperature, T=20°C

Q: Part A 4.0x1025 03 molecules Express your answer to two significant figures and include the…

A: 1 mole = 6.023 × 1023 molecules

Q: 4

A: This question is related to mole concept.

Q: Ammonium perchlorate (NH4CIO4) is the solid rocket fuel used by the U.S. Space Shuttle. It reacts…

A: Recall the dissociation reaction of ammonium perchlorate 2NH4ClO4 -----> N2 + Cl2 + 2O2 + 4H2O…

Q: What is WRONG with the following statements? Do NOT correct the mistake. Say only wrong. (a) The…

A: 1) density of iron is 7.84gm/ml 2)SnS is tin sulphide 3) NH3 have N3-  and H+ ions

Q: Suppose there are two known compounds containing the generic elements X and Y. You have a 1.00 g…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: Phosphorus has the molecular formula P4 and sulfur has the molecular formula S8.   How many grams of…

A: Given: Mass of S8 = 641 g Molar mass of S8 = 256.48 g/mol Molar mass of P4 = 123.88 g/mol

Q: Iron(III) oxide can be converted to iron metal and water by heating it with hydrogen gas. If 100. g…

A: Mass of Fe2O3 = 100 g Mass of H2 = 2 g

Q: 4.6 mol nitrogen. Express your answer using two significant figures. να ΑΣφ VN, Submit Previous…

A:

Q: Calculate the number of carbon atoms in 2.73 g of table sugar, C12H22O11. Express your answer using…

A: One moles of table sugar contains 12 number of CarbonsMolar mass of Carbon is 12.0107Molar mass of…

Q: TUBE 1 2 4 6 7 8 9. 500ul-a 500ul-b 500ul-c 50ul-a 50ul-b 50ul-c 5ul-a 5ul-b 5ul-c LABEL Initial…

A: We are given 3 experimental values for each measurement, and we have to find standard deviation for…

Q: n lab, you determine that the mass of a Florence flask and a piece of aluminum foil weigh 39.964 g.…

A: First calculate the mass of unknown vapor by subtracting mass of flask and foil from mass of flask,…

Q: A 12.5g sample of a hydrate of calcium chloride is found to contain 3.06 g of water. what is the…

A: We have to predict the formula for Calcium hydrate.

Q: 1. Solve and choose the correct answer from the given choices: a. How many atoms of tin are found in…

A: 1. We have to calculate the number of atoms present in 3.5 moles of tin, Sn. We know that 1 mole of…

Q: Empirical formula lab: Compound magnesium MG metal and chlorine Cl the chemical reaction involves…

A: Here we are using hydrochloric acid and magnesium. When the reaction occurs we will get a compound…

Q: -5 A chemist adds 0.15 L of a 9.99 × 10 mol/L silver(II) oxide (AgO) solution to a reaction flask.…

A:

Q: Which answer lists all the substances below that are compounds and not any elements or mixtures? I.…

A:

Q: An instrument used to detect metals in drinking water can detect as little as 1 ug of mercury in 1 L…

A: The number of mercury atoms that is consumed by drinking 1 L of water that contained 1 µg of mercury…

Q: mass of matter (in grams)

A:

Q: 5.66×1020 H2O2H2O2 molecules Express your answer using three significant figures.         mm =…

A:

Q: In lab you measure out 32.02 grams of C3H6O3C3H6O3 for an experiment. How many mol is this? Give…

A: Mass given = 32.02 g We need to find number of moles.

Q: Which of the following substances is both heteroatomic and triatomic? Group of answer choices a. HCN…

A: A heteroatomic molecule contains different types of elements. They are further classified as -…

Q: pH = = 2.84 Express your answer using two significant figures. Enter your answers numerically…

A:

Q: Aspartame is an artificial sweetener that is 160 times sweeter than sucrose (table sugar) when…

A: Molecular formula of( aspartme)   C14H18N2O5=  No of molecules in aspartme = 1.1 x 1020 molecules…

Q: -273 K O 'F -273 °F -273 °C OK O'C

A: We know that absolute zero  is 0 k So by using relationship  0 K = 273 + 0C 0C=0- 273 0C= - 273…

Q: Remdesivir is a broad-spectrum antiviral medication that is currently being used to treat Covid- 19.…

A:

Q: Calculate the mass of nickel that could be obtained from 3.45x1025 f. units of Nickel (III) oxide.…

A: 6.022 ×1023 units are present in 1 mole of Ni2O31 unit will be present in = 16.022 ×1023 moles of…

Q: 0.145 mol C2 H6 Express your answer using three significant figures. VC = mol Submit Request Answer…

A:

Q: substance contains 35.0g nitrogen, 5.05g hydrogen and 60.0g of oxygen. How many grams of hydrogen…

A: given   N =35.0 g H=5.05g O=60.0g Sample mass  = 185 g

Precipitation Titration

Precipitation analysis is used to analyze drugs, and to measure the salt content in food and beverages. It is an important concept from the examination point of view many practical questions are asked on the topic. This topic is significant in the professional exams for both undergraduate and graduate courses, especially for