Which of the following correctly identifies the number of each element involved in the chemical formulas? NH4 CO3 A N: 4 H: 4 С: 3 0: 3 В N: 1 H: 1 C: 1 O: 3 C N: 0 H: 4 C: 0 0: 3 D N: 1 H: 4 C: 1 0: 3
Q: a) Identify the following as element (atomic or molecular), compound or mixture. b) Explain your…
A: An atom of a element is composed of a single nucleus with a unique number of protons surrounded by…
Q: How many total atoms are in (NH4)3PO4
A: An atom is the smallest unit of matter.
Q: 1. For each of the following elements write the element’s electron configuration. AL Ti Sr
A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Determine the mass in grams of 2.10 × 10²¹ atoms of copper. (The mass of one mole of copper is 63.55…
A: Molar mass is defined as the ratio of the mass of the substance (m) to the moles of substance (n)…
Q: Elemental analysis of a compound with molar mass 342.3 g/mol gives the following mass percent…
A: Given Percentage of C= 42.11 % Percentage of H=6.48 % Percentage of O=51.41% To Calculate:…
Q: The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling…
A: There are three most common states of matter: solid, liquids, and gases. These states of matter can…
Q: How do I name the following compounds:? a. Fe3(PO4)2 b. P2O6 c. F2O d. Mo(SO4)3…
A: A chemical compound is a chemical substance that is composed of many identical molecules which are…
Q: Cao (s) (calcium oxide) is the main ingredient of concrete. While mixing Cao with water, the mixture…
A: Given that the CaO reaction with H2O gives out heat and forms Ca(OH)2 in the product. So the…
Q: Magnesium atoms lose two electrons when they react. Write the symbol of the ion that is formed. Is…
A: Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid…
Q: The specific gravity of the following compounds are: Ether – 0.715; Bromine - 3.016; Glycerin -…
A: Specific gravity: Relative density is the ratio of the density of any substance to that of the water…
Q: How many total atoms would be in one formula unit of (NH4)3PO4? 20, 4, 18, 16
A: Ammonium phosphate fertilizes lawns that are deficient in nitrogen and phosphates. Ammonium…
Q: A. List the five tests from your lab report and answer positive or negative for the following…
A:
Q: What factors can make a compound called as a salt? Specifywhich of the following compounds are…
A: An ionic compound made up of cation from the base wheras an anion from the acid are the factors that…
Q: Which of the following compounds would you expect to have the highest boiling pointand which the…
A: The boiling point of a substance is the temperature at which liquid turns into vapour. The boiling…
Q: If penguinium (element number 119) is ever discovered, what will its electrom configuration be?* O…
A: Introduction A Pure Substance Made Up Entirely Of Atoms With The Same Number Of Protons In Their…
Q: At room temperature, substance 1 is a gas while substance 2 is a liquid. Which of the following is…
A: A state of matter is defined as one of the distinct forms that various phases of matter take on. The…
Q: How many mL of 0.254 M NaOH are needed to fully react with 37.50 mL of 0.358 M H2SO4?
A: Concentration of the NaOH = 0.254 M Conc. of H2SO4 solution = 0.358 M or conc. of [H+]=2×0.358 M…
Q: What coefficients must be placed in the following blanks sothat all atoms are accounted for in the…
A: As per the law of conservation of mass, mass can neither be created nor destroyed. This also applies…
Q: How many grams are in 0.250 moles of lithium carbonate ? a) 12.225 b) 18.47 c) 18.5 d) 16.5
A: The molecular formulae of lithium carbonate are Li2CO3.
Q: How many grams of CH3OH can be made from 10.0 g of CO if it all reacts?
A: Methanol (CH3OHCHX3OH) is made by reacting carbon monoxide (CO) and hydrogen (H2) at high pressure:…
Q: Nicotine, an alkaloid in the nightshade family of plants that is mainly responsible for the…
A: Nicotine is an alkaloid that is found especially in plants belonging to the nightshade family. It is…
Q: A. List the five tests from your lab report and answer positive or negative for the following…
A: The given structure is of aldopentose.
Q: Calculate the molar mass of each of the following compounds:(a) Calcium carbonate, CaCO3 (b) Urea,…
A: Molar mass is defined as the mass of a substance in grams of 1 mole. It is calculated by summing all…
Q: What coefficients must be placed in the following blanks so that all atoms are accounted for in the…
A: When balancing chemical reaction the number of atoms of each element in left hand and right hand…
Q: A 75.0 g piece of Ag metal is heated to 80.0 C and dropped into 50.0 g of water at 23.2 ° C. The…
A: To find: Specific heat of silver
Q: Which equation represents a chemical reaction that obeys the law of conservation of matter? O…
A: Mass cannot be produced nor be destroyed, it can be converted So the reaction in which equal number…
Q: Element Z forms an ion Z 3+, which contains 31 protons. What is the identity of Z, and how many…
A: The boron family has elements in group 13 of the modern periodic table. It includes the semi-metal…
Q: Copper(II) acetate containing 6Cu is used to study brain tumors. This isotope has a half-life of…
A: Time elapsed = 63.5 hours Half-life of 64Cu = 12.7 hours
Q: determine the density of a metal that has a mass of 2.17g and a volume of 0.35 cm^3
A: The unit of density is gm/cm3 .
Q: The following items are ions: O Na+, NO2, H+ O CO2, K+, Ca+ Na+, H+, K+ СО2, Н20, NO2
A: The human body contains many ions such as sodium, potassium, calcium, chloride ions. They are…
Q: Define the following terms: a. hydronium ion b. acid c. base d. Ka e. pKa
A: In the solution, when a compound reacts, there is a formation of the product. In the chemical…
Q: (i) MnO is basic whereas Mn207 is acidic in nature. Why? (ii) Transition metals form alloys. Why?…
A: Chemical compounds are the important basis of life. The compounds that are obtained from living…
Q: Table salt (sodium chloride) is made up of sodium and chlorine. We are able toeat the compound,…
A: Table salt is sodium chloride. It is made up of sodium and chlorine. Sodium is a metal and chlorine…
Q: Which of the following is the cyclic form of an L saccharide? 1) II) CH2OH OH H CH2OH H H H OH H ÓH…
A: The preferred form of monosaccharides is a cyclic hemiacetal. 5 or 6 membered rings because of their…
Q: Ethyl mercaptan is an odorous substance added to natural gas to make leaks easily detectable. A…
A: Given: Ethyl mercaptan is an odorous substance added to natural gas to make leaks easily detectable.…
Q: water 4.18 ethyl alcohol 2.44 benzene 1.80 sulfuric acid 1.40 ased on the information in the table,…
A: INTRODUCTION One of water's most significant properties is that it takes a lot of energy to heat it.…
Q: Determine the number of moles in 1.95 x 1023 formula units of MgCl2.
A: Given: Formula units of MgCl2=1.95×10233 No. of moles of MgCl2=?
Q: the molecular formula
A:
Q: The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 10.56 grams of aluminum…
A: molality = weight of solute*1000/gram molecular weight of solute* weight of solvent in g =…
Q: FREE RESIDUAL CHLORINE IS 1. Chloramide compounds 2. hypochlorous or chloric acid 3. haloform…
A: Introduction :- The quantity of chlorine that remains in the water after a given period or contact…
Q: A sample of 0.6760 g of an unknown compound containing barium ions (Ba2+) is dissolved in water and…
A: The chemical reaction between barium ions and sodium sulfate is: Ba2++Na2SO4→2Na++BaSO4
Q: :OH KMNO4
A: Potassium permanganate (KMnO4) is a very strong oxidant which is able to react with many functional…
Q: The triple point of an element is at 75 torr and 125°C. This means that liquid is more dense than…
A: Various biochemical and physiological processes occurs in the cells resulting in various activities…
Q: How many H2O particles were produced by creating the following structure? R H R R -N-Ç, H-N-C,- H H…
A: Extention of a polypeptide chain is a typical dehydration reaction where OH from carboxyl group and…
Q: Give the name of and symbol for an element with this number of valence electrons. a) 2 b) 6 c) 8
A: Valence electrons are the electrons which are present at the outermost shell. These electrons take…
Q: For the following reactions, identify the atom(s) being oxidized and reduced:
A: A redox reaction is one in which both oxidation and reduction take place simultaneously. When a…
Q: In 5H2O how many hydrogen (H) atoms are present
A: Hydrogen atom is chemical atom which has atomic mass and number as 1. It has a single proton In it's…
Q: find the viscosity of the following using perry's table 2-312, 2-318 8th edition Air at 30°C 89%…
A: Viscosity is caused by friction within a fluid. It is the result of intermolecular forces between…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- The pH of a 1.25 x10-3 M NaOH solution is: a 7 2,90 3.10 d 11.10 O e 10.90Which of the following has the compounds shown in the correct order of decreasing acidity (i.e., more acidic > less acidic)? OH 2>1>3 3 > 21 1>3>2 1 2 3 ΝΗΣ 2 3An aqueous solution contains 0.34 M potassium cyanide. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) 0.34 mol HCI04 0.16 mol NaOH 0.33 mol KCIO4 0.16 mol HCIO4 0.33 mol HCN
- A patient’s treatment plan requires two IV solutions to be administered:20% magnesium sulfate, MgSO4, and 10% calcium chloride, CaCl2. Thenurse is concerned, MgSO4 and CaCl2 are listed as incompatible IVsolutions with the risk of solid precipitate formation (image shown toright). Write the chemical equation that predicts the products thatform when combining MgSO4 and CaCl2. Please use the providedsolubility chart to help you determine chemical phases.Estimate the pH of a 7.18 x 106 M HF solution. You can calculate the lowest possible pH, knowing that the actual value will be higher. Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH will be above Select the solution with the highest pH. Multiple Choice 0.0225 MLIOH 0.0225 MH2CO3 0.0225 MCH3NH2You are told to prepare 200 mL of fixative solution containing 30% formaldehyde (vol/vol), 1X glycerol and 2.5 mM sodium chloride (NaCl). You find a stock of 100% pure formaldehyde (liquid), a 10X glycerol stock (liquid), plenty of water and a stock solution of 5M NaCl. There are also all kinds of pipettes, cylinders and beakers to measure volumes. How can the fixative solution be made (describe the process, include calculation concepts)?
- eriences the electrostatic field of another nighly electronegative atom nearb 18. Put the following in the correct order to describe the pattern of disease: period of convalescence, prodromal period, period of decline, incubation period, and period of illness. In which of these stages is the sick person capable of infecting other people DFocus 582 words English (Canada) 112 prt sc ho VAA ts - 17 144 & 2$4 4. 6. 7. 1/2 314 1/4 2 01 60 C0 %24Trans-oleic acid (18:1,D9) has a melting temperature of (44.5C) and cis-oleic acid (18:1,D9) has a melting point of (13.4C). Briefly explain the difference in melting points between the two.At blood pH 7.4 the molar ratio of bicarbonate and dissolved CO2 is: Group of answer choices 20 to 1 4 to 1 1 to 4 1 to 20When using an Indirect Ion Selective electrode: The measurement will not suffer interferences from lipids The measurement will not suffer interferences from proteins The sample will be analyzed without a dilution The sample will be analyzed after a dilution
- The substance oxygen has the following properties: normal melting point: 54.8 K normal boiling point: 90.2 K triple point: 1.50×10-3 atm, 54.4 K critical point: 49.8 atm, 154.6 K A sample of oxygen is initially at a pressure of 58.9 atm and a temperature of 96.9 K. The pressure on the sample is reduced to 1.50×10-3 atm at a constant temperature of 96.9 K. Which of the following are true?Choose all that apply The sample is initially a liquid. The gas initially present will solidify. The final state of the substance is a gas. One or more phase changes will occur. The final state of the substance is a solid.You are supplied with the following: / Jy word voorsien van die volgende: NaCl (Mr= 58,443 g /mol) 2.5M Tris-Cl, pH 8 solution /oplossing (1 Litre) EDTA (Mr= 380,2g/mol) 10% sodium dodecyl sulphate solution / natriumdodecyl sulfaat oplossing Proteïnase K solution / oplossing (50 mg dissolved / opgelos in 1 ml ddH2O) You need a digestion buffer consisting of the following: / Jy moet 'n verteringsbuffer op maak wat uit die volgende bestaan: 15m M NaCl 75 mM Tris-Cl,pH 8 16 mM EDTA,pH 8 0.8% sodium sulphate / natrium dodecyl sulfaat 0,75 mg/ml proteïnase K How will you prepare 500 ml of the digestion buffer? Show all your steps and calculations. Remember to explain exactly how you will make it up. / Hoe sal jy 500 ml van die verteringsbuffer voorberei? Wys al jou stappe en berekeninge. Onthou om te verduidelik presies hoe jy dit sal op maak.What is the empirical formula for C3H6O3? C3H6O3 C6H12O6 CH2O None of these