A sample contains one or more of the ions: aluminum, calcium, copper(II), iron(III); upon addition of NH3, after centrifuging, it looks like the picture shown below. For each metal put in the correct letter: P = definitely present,  A = definitely absent, U = uncertain, can't tell if present or absent.  aluminum = , calcium = , copper = , iron = .

Q: A 1.00 g sample of a magnesium-aluminum alloy yields 0.107 g H2 when treated with an excess of…

A: Given, Mass of Mg-Al alloy = 1.00 g Mass of H2 produced = 0.107 g   Moles of H2 produced can be…

Q: The steps to balancing a neutralization reaction when given a verbal description can be summarized…

A:

Q: How would the following errors affect the empirical formula for the compound? That is, will these…

A: The empirical formula is the simplest ratio of different elements present in a compound. The ratio…

Q: . Suppose an unknown metal sulfate is found to be 72.07% SO 4 2- Assuming the charge on the metal…

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

Q: Find the percentage of nitric acid if you know that 9.777 G has been diluted with water to a liter…

A: Givennormality of NaOH solution=.104 Nvolume of NaOH=25 mLvolume of HNO3 used in neutralizatio…

Q: Some brands of salami contain 0.090% sodium benzoate (NaC2H3O2) by mass as a preservative. If you…

A:

Q: Consider these compounds: A. CUCO3 В. Mns C. Ba3(PO4)2 D. Ca3(PO4)2 Complete the following…

A: Compounds' solubility can be compared using their Ksp (solubility product constant) values. The…

Q: For the analysis of unknown soda and vinegar samples, 25.0 mL soda and 1.0 mL vinegar samples were…

A:

Q: What mass in grams (g) of Li3PO4  (MM=115.97 g/mol) is needed to prepare 125. mL of a solution…

A: Molarity (M) indicates the number of moles of solute per liter of solution (moles/Liter) and is one…

Q: B+ 0 -> What is the relationship between the total charge of the reactants (left) and the products…

A: The given nuclear reaction is: N716→β-10+O816

Q: Complete the following net ionic equations by choosing the correct chemical formula for the product…

A: Ag^+(aq). + Br^-(aq). -->

Q: v. The models of solid NaCl describe it as consisting of Nat cations and Cl- anions. If this is the…

A: Electrolytes are substances that produce ions when mixed with water. Since they all produce ions in…

Q: laterials engineers often create new alloys in an effort to improve the properties of an existing…

A: Materials engineers often create new alloys in an effort to improve the properties of an existing…

Q: A solution of F is prepared by dissolving 0.0827 ± 0.0006 g NaF (molar mass = 41.989 + 0.001 g/mol)…

A:

Q: The reaction of hypothetical elements: A, B, C, D, and E, follows the molecular equation:…

A: Spectator ions are the ions that do not participate in the chemical reaction. They remain in same…

Q: 3. The recommended daily allowance (RDA) of iron for females ages 18-50 is 18 mg per day. In theory,…

A: We have to find the percentage of iron in an iron sulphate tablet.

Q: Mass of sodium is 22.99, oxygen 16.75g hydrogen 1.21g how many grams of NaOH are in 305 ml of a .6M…

A: Given : Concentration of NaOH solution = 0.6 M And volume of NaOH solution = 305 mL = 0.305 L…

Q: (2) An ore is analyzed for the manganese content by converting the manganese to Mn,0, and weighing…

A: Mass of total sample = 1.52g mass of Mn2O3 = 0.126g mass % of Mn2O3 =( mass of Mn2O3/total mass of…

Q: For the next 3 items: A 0.498 g sample contains 26.0% aluminum triiodide, Alls, (MW = 407.695) by…

A: when two soluble salt react it would result in the formation of insoluble salt which does not…

Q: On a balance mass an amount of potassium hydrogen phthalate (KHP) needed to neutralize approximately…

A: KHP is Potassium Hydrogen Phthalate. Molarity of NaOH = 0.1M  Volume of NaOH solution. = 12 mL =…

Q: For the analysis of unknown soda and vinegar samples, 25.0 mL soda and 1.0 mL vinegar samples were…

A: During the process of titration, titrant is added to the solution of analyte until the number of…

Q: Which one of the following statements is correct about the reaction below? Mg(s) + 2 HCI(aq) →…

A:

Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,…

A: Given: Hardness=175 mg CaCO3/L

Q: Which of the following compounds is a electrolyte? O A. water O B. dihydrogen monoxide C. copper…

A: The electrolyte is a substance that produces ions in its aqueous solution and conducts electricity.…

Q: Solvent Hydrogen Oceans Ponds Cooking Cleaning Boiling Freezing Properties Colorless Tasteless Oil…

A: The blanks are filled below:

Q: NH, CH, h. HCI(g) i. NaCI SiC Cu

A: Attractive intermolecular forces are categorized into the following types:  1) Ionic bonding  2)…

Q: Balance the following equation and charges, Na + H2O--> Na^+ + H2 + OH^-

A: Given: Reaction of sodium with water  To find: Balance it and balance the charges as well Solution:…

Q: A commercial method of manufacturing hydrogen involves the reaction of iron and steam, as shown.…

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and…

Q: 50.0 mL 2.00M HCI and 50.0 mL 2.00 M NaOH mixed: HCI(aq) + NaOH(aq) → H,0() + NaCI(aq) - Csoln =…

A: In just above step of  circled part, we have calculated the total heat released during the reaction…

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: The steps to write the empirical formula are shown in the next step

Q: 1. Write an equation showing how the mass of the substance sought can be converted to the mass of…

A: NOTE

Q: Write the correct formulas of the products and their phases (s/l/g/aq), and balance the reaction. If…

A: A reaction is said to be balanced when there are equal number of atoms of elements on reactants and…

Q: A student is given an unknown metal “M” which reacts with iron and copper, but not with magnesium.…

A: To find metal M which reacts with Fe and Cu but doesn't with Mg:

Q: Ca OH Ca* Ca Ca* OH OH OH OH Ca* OH OH Ca* OH OH Ca* OH Ca+ Ca(OH), OH Саон A C Which beaker best…

A: Calcium hydroxide is a strong base with a molecular formula Ca(OH)2. It does not dissolve much in…

Q: A hydrate of iron (II) sulphate, FESO, xH,0 is 20.0% iron by mass. A) What is the chemical formula…

A: The compound given is FeSO4·xH2O. And mass percent of iron i.e. Fe in compound = 20.0 %. Assuming…

Q: The reaction of hypothetical elements: A, B, C, D, and E, follows the molecular equation: AB2(aq) +…

A: Spectator ions :-  The ions which do not take part in chemical reaction taking place in solution and…

Q: 2+ In the laboratory you are given the task of separating Ba* and Fe* ions in aqueous solution. For…

A: To seperate the ion in the given aqueous solution, we have to know the solubility of the formed…

Q: Which image represents a mixture of compounds? II II IV

A: Any substance made up of similar molecules made up of atoms from two or more chemical elements is…

Q: The elements of Group 1-B (Cu, Ag, and Au) are sometimes referred to as the “coinage  metals.” Why?…

A: Elements Copper ( Cu),  Silver ( Ag) and Gold (Au) are called as 'coinage metals' because as they…

Q: 1. Write the gravimetric factors (using chemical formulas) for each of the following: Sought a) Al…

A: The formula for the gavimetric fator is  gavimetric factor ( GF) = mass of soughtmolecular mass of…

Q: A 12.0 wt% solution of CaCl2 (110.98 g/mol) has a density of 1.107 g/mL. What is the mass, in…

A: Since you have posted mulitiple question in a session, we are entitiled to answer only first…

Q: 4. Complete the following reactions and write net ionic equations for each if any. a) Pb(NO,), and…

A: spectators are not included in the net ionic reaction.

Q: Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water…

A: The concentration term 1 ppm means that there is 1 mg present in 1 L solution. 1 gallon =3.78541 L…

Q: 8. Citric acid (abbreviated H,Cit) is a triprotic acid, so 3 moles of hydroxide ions are required…

A:

Q: Describe any visual differences between the hydrated sample and the dried, anhydrous form. How would…

A: Mass of alum taken = 2.0 g Mass of water released = 1.48 g( the value calculated is correct) Mass of…

Q: Write net ionic e substances mixec a. Sodium c b. Ammoni C. Potassiur d. Sodium H

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

Q: The alkali metals react with water to give hydrogen gas and a metal hydroxide, MOH, where "M" is the…

A: Alkali metals are group 1A elements.

Q: A solution of F− is prepared by dissolving 0.0944±0.0006 g NaF (molar mass = 41.989±0.001 g/mol) in…

A: Concentration of a given solution can be represented in the form of molarity, molality or normality.…

Q: The reaction of hypothetical elements: A, B, C, D, and E, follows the molecular equation: AB2(aq) +…

A:

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".