处 The name of this symbol is toxic sign. True False

Q: Which of the following is NOT one of the elements important for life? (MARK ALL THAT APPLY) oxygen…

A: The six element necessary to all loving organism is Carbon , Hydrogen , Nitrogen, Oxygen,…

Q: 76 34 Q. Identify the chemical symbol of element Q in Se As Mo Os Al -) (5)

A: A multiple choice question about chemical symbol, which is to be accomplished.

Q: Which one of the following is both a compound and a molecule?

A: Molecules made up of 2 atoms of same element or many atoms of different elements whereas Compound…

Q: If sucrose costs $1.20 per pound, and a bottle contains 2.00 kg, how much would you pay for a case…

A: we know that, kg and pound are related ro each other as;2.205 pounds=1 kilogram1 pound=12.205*1…

Q: Jean Baptiste Dumas is credited with establishing values for the molecular weights of thirty…

A: Jean-Baptiste Dumas was a French chemist, who was known for his organic analysis and Synthesis.

Q: The mass of a test tube and hydrate was 35.2755 grams. The mass of the empty test tube was 23.7726…

A: The difference of the mass of test tube and hydrate salt and empty test tube gives the mass of…

Q: pKa's: 2

A: Given as, pKa 1=2.19,pKa 2=6.94,pKa 3=11.51. As per rule, allowed to answer one question and post…

Q: NARGIZ GLIYE 20290 TARG drinking water should 0290 SARG Which of the following statements is NOT…

A: We have to study each line about Arsenic and then have to decide which is false.

Q: [1] LIAIH C. N. [2] H20 [11 LIAIH(OC(CHa)ala [2] H20 d. CI

A:

Q: A molecular biologist measures the mass of cofactor A in an average yeast cell. The mass is 21.18…

A: 1 microgram (ug)  =  1000000 picograms(pg)

Q: Identify which balance was used to make each mass reading. 0.90g  1.230g 4.0000g 5.43g 6.539g…

A: The number of significant digits after the decimal is taken same as the number of significant digits…

Q: Explain three different types of mass spectrometers. Differentiate them, construction,working and…

A: Interpretation - To explain three different types of mass spectrometers and we have to differentiate…

Q: The element mercury (Hg) is a heavy metal that is highly toxic in very small quantities. An ailing…

A: 1.60 ppm means There are 1.6 mg in 1 kg of moos.or we can say that 1mg of Hg is present in (1÷1.6)…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Given: Each glass of drink contains = 8.8 mg Allura Red Person's body weight = 165 lbs To Calculate:…

Q: а. 2Sr + 02 2SrO b. 2Li + S Li2s c. Cl2 + 2NaBr 2NaCl + Br2

A: you have posted multipart of question as per the guidelines i have solved first three subparts…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Given : the volume of beverage consumed = 12 fl oz since 1 fl oz = 29.5735 mL  hence volume of…

Q: Round 571901 to three (3) significant figures.

A: In order to round to 3 significant figures,we need to look at the fourth significant figure. if it…

Q: Which of the following materials would make a better shield from radiation? i)  Iron (density =…

A: To find: The material which make a better shield from radiation

Q: Which of the following is a chemical property? O Changing shape Melting point O Oxidizing…

A: Physical change: In a physical change the physical state of matter changes. In this change different…

Q: 62 26 Fe

A:

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Mass of the person given is 225 lbs Since 2.205 lbs = 1 Kg  Hence mass of person in Kg = mass in lbs…

Q: The SURROUNDING is the part of the universe being studied. Check the CAPITALIZED WORD(S) if it makes…

A:

Q: SIC1₂ vapor. proofed by coating it with a silicone layer. This is done by exposing the cloth to…

A: Given as, n(CH3)SiCl 2 +2nOH→2nCl- +nH2O+[(CH 3)2SiO] n ​

Q: Annotate the IR 100 4000 3000 g000 1500 1000 50 HAVENUHB ERI -l TFINSMITTRKEI

A: To annotate the given IR data.  "Since you have asked multiple questions, we will solve the first…

Q: Broken glasses are the biggest (10 physical hazard causes laboratory .accidents True False…

A: Laboratory hazards include chemical, physical and biological hazards. They include compressed gases,…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: The number of mg of Allura Red present in 9 fluid ounce glass of beverage can be calculated as

Q: B.O to Ar = 1.5. True False

A:

Q: Classify these properties of the metal lithium as physical or chemical. Physical Chemical

A: In the given question we have to classify the physical and chemical properties of lithium metal.…

Q: pka Ка Kb pKb (1) (2) 1.191 х 106 6.359 7.641 (3) (5) (8) 8.395 х 10° 1.778 х 105 (6) 1.838 х 104…

A:

Q: 02 + 1. Ca 2. CdCO, Ni Cl2 + 3. Zn

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A:

Q: Give the name of the following lab equipment:

A: PH paper is used to find out whether the solution is acidic, basic or neutral. This is find out by…

Q: Which of the following substances meets the definition of a pure "compound" according to the…

A:

Q: nolecules. True False

A: In the van der waals equations , there were 2 correction terms.  One for the non zero volume of gas…

Q: 1. Name the chemical and physical characteristics of polymers.

A: 1. Chemical characteristics of polymers; a. Reactivity and bonding: Polymers have covalent bonding…

Q: Mass Cr plated (g)

A:

Q: Which of the following are physical properties of elements within Group 2 of the periodic table?…

A: The elements Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: The volume of the fluid is calculated as,

Q: Graphene is a __________? a. metallic nanomaterial b. carbon nanomaterial c. quantum dots d.…

A: Graphene exist as single layer of atoms arranged in two dimensional lattice.

Q: Water softening is necessary to prevent clog in plumbing and prevent formation of scum in bathrooms…

A: Chemistry can be defined as the branch of science that deals with the study of properties of matter.

Q: Discuss 5 advantages and disadvantages of palm oil source of oleochemicals in Malaysia.

A: Advantages of palm oil source of oleochemicals in Malaysia. 1) Malaysia contributes about 20% to the…

Q: S20g2- + TI* → 2So42- + T13+

A: Answer : reaction is-  S2O82- + π+= 2SO42-. + π3+ First half reaction-  S2O82-. = 2SO42- On…

Q: Select ALL of the metals listed below. hydrogen (H) O calcium (Ca) O gold (Au) O silicon (Si) iodine…

A: Given that,

Q: A Сopper Zinc Brass Glycine Helium D E F Mercury Saline Ammonia H Hydrogen peroxide Propane Platinum

A: Here we see brass is in face centered cubic unit cell (FCC). And most important it is in solid…

Q: 104.3 MHz in energy

A: We know that , energy of a photon is related to Plank's constant as,…

Q: For the data below, if a diluted (DF=100) water sample has an absorbance of 0.057, calculate the…

A:

Group 14 Elements

The following elements come under group 14 of the periodic table.