Complete the following statement: data that have a large systematic error can still be (a) accurate, (b) precise, or (c) neither.

Q: Given the following volumes of gases at 54.0°c and 790 torr, calculate the number of moles and the m...

A:

Q: How many grams of sodium hydroxide are required to prepare 750 mL of a 5.0% solution? We'll assume t...

A: In percent solutions, the amount (weight or volume) of a solute is expressed as a percentage of the ...

Q: Consider the following reaction Cals) + 2HOlag) --> CaClylag) Using the limiting reactant concept, h...

A:

Q: Give structural formulas for the reagents, intermediates, and products symbolized by letters in the ...

A: Answer:

Q: The question is: "Draw the curved arrow mechanism for the reaction between pentan-2-one and (CH3)3O–...

A: The give reaction involves abstraction of proton by bulky base, which is tert-butoxide anion. Since,...

Q: A 1.25 L sample of nitric oxide gas at 85 ∘C is cooled to 35 ∘C  If the pressure remains constant, w...

A:

Q: 25.0 mL of 1.00 M HCl at 24.3°C react with 25.0 mL 1.00 M NAOH in a styrofoam calorimeter whose calo...

A: Using the energy conservation , in calorimeter  heat given in the reaction of neutralisation =heat c...

Q: Enter the noble gas in brackets in the first blank at the top. For the following rows: in the first ...

A: Electronic configuration of an atom is defined as the filling of electrons in increasing order of th...

Q: A sample of 0.3220 g of an ionic compound containing the bromide ion (Br-) is dissolved in water and...

A:

Q: Be sure to answer all parts.For n=5 and /=1, give the sublevel designation, the allowable m values, ...

A:

Q: Tartaric acid contains only carbon, hydrogen, and oxygen. A 1.7323 g sample of tartaric acid was sub...

A:

Q: If you have 500 mL of a 9% aqueous solution of hydrogen peroxide, what volumes of hydrogen peroxide ...

A: If 10% any substance present in water that means     10 ml or 10 grams substance in 90 ml or 90 gram...

Q: Liquid London Forces Dipole-dipole Hydrogen bonding A       B       C ...

A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you...

Q: Write a net ionic equation to show why the solubility of Pb(OH)2(s) increases in the presence of a s...

A: Given salt,         Lead(II) hydroxide - Pb(OH)2

Q: Answer the /Ing qu CH3CO2 (ag) + MnO4 (aq) CO3²- (aq) + MnO2 (s) a. What is the oxidation number for...

A: Balance elements in the equation other than O and H. Balance the oxygen atoms by adding the appropri...

Q: help

A:

Q: A patient had severe acid reflux symptoms and decided to take the antacid, Amphojel (aluminum hydrox...

A: 1) Given reactant: HCl and Al(OH)3. The given reactants contain acid and base hence this will result...

Q: In what way would changing the mobile phase affect the Rf?

A: Thin Layer Chromatography is a technique used to isolate non-volatile mixtures. The experiment is co...

Q: Which of the following will produce hydrogen gas when reacted with HCl acid? a. NaHCO3 b. Mg c. KOH ...

A: Metals having +ve oxidation potential react with acid to produce hydrogen gas Compounds that can pro...

Q: Chemistry Question

A: Calcium sulphide is an ionic compound which is sparingly soluble in water which dissociates into its...

Q: Draw the Lewis structure for carbonate (CO3²"). Does this molecule exhibit resonance? A) Yes B) No

A:

Q: when we make observations in the laboratory, which perspective of chemistry are we normally using?

A: There are three main perspectives on the nature of chemistry as macroscopic, microscopic and symboli...

Q: A mixture of cyclopropane gas (C3H6) and oxygen (O2) in mole ratio 1.00 : 4.00 is used as an anaesth...

A:

Q: question 69 and 70 from principles of modern chemistry

A: As given in the question, The MO wavefunction of the ground state of a heteronuclear diatomic molecu...

Q: Can you help me answer the following questions: 1. What is the mass of hydrous copper sulfate? 2...

A: (1) Given compound name,         Hydrous copper sulfate

Q: both questions go together... thank you!

A:

Q: What is the zone of stability? What are three decay processes that help an isotope get to the zone o...

A: Zone of stability or band of stability is the region in the plot of number of protons versus number ...

Q: How  to draw 2 propanol

A: The structure can be drawn by following the guideline to name and draw the structure of organic comp...

Q: C. The following reaction is utilized in automobile airbag systems: 2NaN3 (s) -> 2Na (l) + 3 N2 (...

A: Balanced equation: 2NaN3 (s) ----> 2Na (l) + 3N2 (g) From the above equation: Number of moles of ...

Q: Ethanol, C2H6O, is most often blended with gasoline - usually as a 10 percent mix - to create a fuel...

A: When one mole of a compound is burned completely in presence of oxygen, then the heat released durin...

Q: For which atomic orbital does n = 3 and { = 1? A) 2s B) 3s C) 3p D) 3d E) 4d

A: n is principal quantum Number refers to the size of orbital and an energy level an electron is place...

Q: Chemistry Question

A: Le chatelier's principle states that when any physical change is applied to an equilibrium reaction,...

Q: Blood serum is typically about 0.14 M in NaCl. Calculate the number of sodium ions in 37.4 mL of blo...

A:

Q: H2AsO4 + NH3 ---> NH4+ + HAsO4-What is the Bronsted acid in the reaction above? a. H2AsO4 b. NH 3...

A: According to the Bronsted Lowry concept : Acid is the substance that can donate protons.

Q: Question number 26

A: Given Reaction is between Chromium(III) nitrate  with sodium hydroxide

Q: QUESTION 1 Sodium bicarbonate (NaHCO3) dissolves in water by the following reaction: NaHCO3 (s) + Na...

A:

Q: Professor Evans prepares a 3.7 M basic solution that has Kh = 2.3 x 10-9. If the %3D dissociation of...

A: pOH is used to determine the concentration of hydroxide ion.

Q: Fe(OH)3 is most soluble in which solution? pure water 0.1 M Fel3 0.2 М СаClz 0.2 М НСООН О.1 М КОН

A: The given metal hydroxide is very less soluble (partially) in pure water, despite of being ionic. Th...

Q: both questions goes together.... thanks!

A: Hello. Since the question contains multiple parts, only the first part is solved. In case the soluti...

Q: Pota um cobaltinitrite, also known as Indian Yellow, is a salt with the formula K3[Co(NO2)6]. It is ...

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be onl...

Q: Please solve all questions, including the sub parts. 1.The wavelength for mercury is 118 nm. a. Calc...

A: Wavelength of the frequency = 118 nm

Q: Answer the following questions abóut this unbälänčed redox reaction. CH3CO2 (aq) + MnO4 (aq) CO3? (a...

A: Given reaction: CH3CO2-(aq)+MnO4-⇌CO3-2(aq)+MnO2(s)    

Q: The methanation reaction, 3H2 + CO → CH4 + H2O, is used commercially to prepare methane. A gas react...

A: PV = nRT Where, P = Pressure V = Volume  n = Number of moles T = Temperature in K R = Gas constant (...

Q: Ammonia is produced industrially by reacting N2 with H2 at elevated pressure and temperature in the ...

A: Given data, Volume(V)=7.82×103LTotal pressure(P)=245barTemperature(T)=677oC=677+273.15=950.15K

Q: Can I have some help with this chart Calculate Absorbance from % Transmittance for each Standard a...

A: A table of spectroscopic data   

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.