Question 4 The number of valance electrons of Zinc(Zn30) is 1 30 None of the above

Q: Question 3.e of 33 (Tutorial: Mole conversions] This question will walk you through the process of…

A: we have to calculate no. Of atoms present in good Ben Amount

Q: Question 4 How many hydrogen atoms are in 1.0 g of H2O (MW = 18)* O 6.7 x 1022 atoms O 3.3 x 1022…

A:

Q: amount

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Question 11 D Mass of Zn 2.44 g Mass of Cu 0.063 g The mass of Zn and the mass of Cu in a coin are…

A:

Q: QUESTION 8 What is the best explanation for why solid sodium chloride CANNOT conduct electricity and…

A: Solid ionic compounds do not conduct electricity because the ions are held firmly in place. The ions…

Q: How many electrons does an atom gain or lose if a simple ion with a 2– charge (for example,S2- )…

A: Here -2 charge is given.  The given is an anion.  An anion is an atom that has gained a valence…

Q: What is the total number of nitrogen atoms on the right-hand side of this chemical equation? 3…

A: To understand fully chemical equation reaction must be balanced. In any balanced chemical equation…

Q: QUESTION 10 An oxide of iron has the formula Fe 30 4. What mass percent of iron does it contain? O…

A: Formula of the compound is Fe3O4. Molar mass of Fe3O4 = 231.53g/mol

Q: 1. Silver nitrate and calcium chloride 2. Calcium hydroxide and phosphoric acid 3. Aluminum and…

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

Q: Please answer questions 1 & 2 and show your work. 1. A 0.77 mg sample of nitrogen reacts with…

A:

Q: QUESTION 1 What are the following? In each case, give a short answer. Two examples are given below:…

A: As per the policy, we are allowed to answer only 1st three subparts of the question. To get the…

Q: A certain hexahydrate was heated to evaporate off all the water. The remaining material was found to…

A:

Q: QUESTION 38 A 2.000 gram sample of copper chloride was analyzed and produced 1.284 grams of copper.…

A:

Q: QUESTION 8 Calculate the mass of C in 5.46 g of C2H4? O 65.6 g C O 13.1 g C O 0.455 g C 4.68 g C

A:

Q: The mass of one mole of water is 18.0 g. Group of answer choices True False

A: Statement, mass of one mole of water is 18.0 g ?

Q: {NOTE: i) Put answers in the spaces to balance the equations. Example, if question is "_K(s) +…

A: Balance Chemical equation means number of atoms or ions should be equal in both side (reactant and…

Q: Calculate the number of oxygen atoms in 3.9 grams of KMnO4.

A: First we will calculate the number of molecules of KMnO4 in 3.9 grams of it. Then calculate number…

Q: QUESTION 4 What is WRONG with the following statements? Do NOT correct the mistake. Say only what is…

A: a) The density of iron is 7.87 g/mL. Statement (a) is correct. b) The name of SnS is tin sulfide.…

Q: Ferrous metals are those that are predominantly made of iron with traces of other elements, most…

A: Metal can be broadly classified into two classes ferrous metal and non ferrous metal  Here we are…

Q: QUESTION 1 What are the following? In each case, give a short answer. Two examples are given below:…

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

Q: QUESTION 11 What is the molecular weight of uranium tetrefluoride, UF4 ? (use 3 significant figures…

A: Compound can be defined as a substance which is formed from combination of two or more different…

Q: M2COS(aq) + CaCl2(aq) → CaCOs(s) + 2 MC1(aq)

A: This question can be solved as:

Q: QUESTION 4 What is WRONG with the following statements? Do NOT correct the mistake. wrong. (a) The…

A: Answer for the given question is given in next step:

Q: QUESTION 4 What is WRONG with the following statements? Do NOT correct the mistake. Say only what is…

A: MnSO4 is Manganese sulphate.

Q: Balancing Equations: ____MgO+____Li2SO4____MgSO4+____Li2O ____H2O___H2____O2…

A:

Q: QUESTION 3 What is the mass of one mole of water? O 9.01 g/mol O 18.02 g/mol 36.4 g/mol We don't…

A: Wight of one mole of a particular compound is the molecular weight .

Q: QUESTION 4 A 1.50-g sample of NazSxO6 contains 6.68 x1021 sodium ions. Determine the value of x.…

A: One molecule of Na2SxO6 contains 2 sodium ions. Number of Na2SxO6 molecules having 6.68 x 1021…

Q: 1. Provide the formula for the following ionic compounds. a. calcium sulfate b. ammonium phosphate…

A: While writing the chemical formula of ionic compounds, positively charged ion (cation) is written…

Q: A copper problem Question 1 When copper is exposed to air for a long time, it "tarnishes" which…

A: The relationship between moles, mass and molar mass is: Moles = MassMolar mass

Q: QUESTION 28 For a 8.73 g sample of ethanol (shown in the figure), what is the percent composition by…

A: Given, Chemical formula of ethanol= C2H5OH Molar mass of ethanol= 46.08 g/mol

Q: Open with Google Docs (n) HCN(aq), HCIO«(aq), H3O*(aq) QUESTION 4 What is WRONG with the following…

A:

Q: Question 1 28.6g of a soluble metal carbonate (M2CO3) was dissolved in water to make a litre of…

A: Given data 28.6 g of a soluble metal carbonate (M2CO3) was dissolved in water to make a litre of…

Q: . manganese + iron (II) chloride Mol: Ionic: Net:

A: Applying concept of writing chemical equations.

Q: In the Chemistry of Copper experiment, starting mass of copper is 0.020g. If the percent recovery is…

A: Answer: 14 mass of reactant copper used = 0.020g % recovery of Copper = 95%

Q: QUESTION 1 How many moles are there in 88 g of CO2 sample? O A. 18 moles OB. 1 mole O C. 2 moles O…

A: Since you have asked multiple questions we will solve the first question for you. To get the…

Q: Compute the empirical formula of the following: 19.1% Sn and 80.9% I

A: Empirical formula of the compound can be calculate with the help of percentage composition of…

Q: Question 3 The recommended daily intake of Vitamin C (ascorbic acid ) in adults is 90 mg. Given the…

A:

Q: Question 2 How many molecules of ammonia are contained in 10.4 moles of ammonia, NH2? O 177…

A: Avogadro's number represents the number of units in one mole of any substance. This has the value of…

Q: Question 4 Calculate the density of CaO. Given: Ionic radii: Rea² = 0.106 nm; Ro² = 0.132 nm Molar…

A: Formula for thia is, Density = (Mass*No of atoms per unit-call)/(edge-length)3

Q: Monday's Bell Question: A sample of a compound was found to contain 54 grams of aluminum, 96 grams…

A:

Q: Balancing Equations: _____CaCl2+____NaPO4______Ca(PO4)2+_____NaCl ____Be+_____Cl2_____BeCl2…

A:

Q: QUESTION 4 What is WRONG with the following statements? Do NOT correct the mistake. Say only what is…

A: The  correct sentences are presented here :

Q: QUESTION 4 What is WRONG with the following statements? Do NOT correct the mistake. Say only what is…

A: Since you have posted multiple questions, we will solve one for you. If you want any specific…

Q: QUESTION 12 The following are requirements for primary standards, EXCEPT O high purity O relatively…

A: High purity is needed for acts as a primary standard , if purity is not high then there is some…

Q: QUESTION 2 The number of water molecules in 2.3 mg of water is O 6.02 x 1023 O 77.0 x 1023 O 7.7 x…

A:

Q: % of Element required 1. Ammonium Sulfite (H)= ? 2. Barium Nitrate (N)=? 3. Copper (II) sulfate…

A:

Q: QUESTION 11 The empirical formula for a compound that is 40.1% sulfur by mass, and contains only…

A: The given compound contains 40.1% sulfur and 59.9% oxygen. The number of moles of each of these…

Q: Question 2 Choose all of the following that result in a chemical change O when you open a can of…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.