answer pls

Q: How many valance electrons are in this family?*

A:

Q: a student makes 6 replicate readings and wants to calculate 95% confidence interval. which t value…

A: Find the mean (average) of the 6 readings.Calculate the standard deviation of the 6 readings.

Q: reagent to complete each reaction. Ignore inorganic byproducts. ++ ye ⠀⠀ U 31. Select to Draw 80 HCI…

A: Alkynes undergo addition reactions when treated with Cl2 or HCl or Br2.

Q: If 35.45 mL of 0.8121 M sodium carbonate solution reacts with excess lead (III) nitrate solution to…

A: First we are going to calculate the sodium carbonate moles of sodium carbonate. it is given that…

Q: A student performs the experiment and acquires a mass of 9.25g for a 10mL addition of 12

A: Part 2: Mass of water = 9.25 g Volume of water = 10 mL To determine: Percent error for this trial

Q: Use the following two titration curves to answer each of the following statements. Select the choice…

A: A solution with pH greater than 7 is a basic. A solution with pH leass than 7 is a acidic. A…

Q: Question 5 (6.54 x 104)3 =?

A: Given : (6.54 X 10-4 )3

Q: When you have the bond H-CI, what is the polarity?

A: Polarity is a separation of electric charge leading to a molecule or its chemical groups having an…

Q: 1. 2 Li, Et,0 2. 0.5 equiv. Cul. 3. CH3(CH2)½Br -CI

A:

Q: Draw the Lewis dot diagram for the compound CH4

A:

Q: how woud you dothis with out a scintific calculator    how do   you calcult  1x10^-14/1.2x10^11 by…

A: We have to do the given calculation.

Q: एकचर्चर नेकट ा ४ mssme missmg greagend ठेवतत A)1. Li Al Hy 2 द00 anके Bar (2 09) 2. H301 १. ५३० CH3I…

A: Organic reactions are those in which organic reactant react to form organic products. In this…

Q: I dont know how they want me to enter the subscrips/superscripts..

A: Given,NH2-

Q: These technique are time consuming, costly and frequently needcomplementary information about sizing…

A: We will determine which techniques are time consuming costly and frequently need complementary…

Q: how long from the original starting time would it have taken to achieve a tempreture of 55 C with…

A: Given: Mass of resistor = 5 g Mass Calorimeter = 22.1 g Mass of calorimeter + water = 116.5  Mass of…

Q: As a material expands its weight per unit of volume

A: Density = mass/volume  Expansion means increase in the volume

Q: Student JB filled the10 mL -volumetric flask with distilled water. Afterwards he transferred the…

A: The solution is given below -

Q: If you live to be approximately 83 years old, how many hours long was your life? Assume a year is…

A: The age is approximately 83 years, and it contains only two significant figures, thus the final…

Q: Give two examples of the Scale Factor Error (one of the types of systematic error).

A: We need to give two examples of scale factor error.

Q: hi i do not understand the words in blue ink written at the bottom can you please re write

A: Ideal gas equation : PV = nRT  where P = pressure of the gas            V = volume of the container…

Q: 203.77miles/sec is converted to cm/nsec?

A: 1 mile = 1.609 kilometres 1 kilometres= 1000 meters 1 meters= 100 centimetres 1 sec = 10^9 nsec

Q: Clubd Question 1: Reaction: CHa(g)+2H;0 (g) = CO:(g)+4H: (g) Calculate AHs98, AS 295, AG 295 of this…

A: The given reaction is, CH4 (g) + 2H2O (g)  →CO2 + 4H2 (g) To find: ∆Ho298? ∆Go298? ∆So298?

Q: S 702 t N02 C2H4 20 vl mil A, 02 Free 40 NO2 CH2N2 NO2

A: alkenes act as both electrophiles and nucleophiles. In case of cyclo-addition reaction, periferial…

Q: Mass of Calcium Carbonate (Precipitate, day 2) Percent Yield

A: Mass of dry filter paper = 0.75g Mass of dry filter paper + precipitate = 1.33g So, for, trial 1 and…

Q: Use the References to access important values if needed for this question. A sample of GeBr4 with a…

A: Given Mass of GeBr4 = 29.6 g Moles = given mass/ molar mass Standard values  Molar mass of GeBr4…

Q: In the UV assay of paracetamol you are required to weigh tablet powder “…containing 0.150 g of…

A: Weight of containing 0.150 g of Paracetamol required for analysis = 0.150 gWeight of paracetamol per…

Q: Average and standard deviation based on "Using the Balance" Data pt. Deviation, (di) (Xi — m) Xi 2 1…

A: We are given all data points, and we have to find the mean and standard for each set of data.  Mean…

Q: 7. Propose how you might synthesize the following molecules from an alkyl halide and a nucleophile.…

A: The given structure is 2,6-Dimethyl-4-heptanone.To synthesize 2,6-Dimethyl-4-heptanone from an alkyl…

Q: What is a standard deviation in analytical chemistry?

A:

Q: has an equal probability of being random systematic tends towards being either cannot can Random…

A: Random error causes one measurement to differ slightly from the next. It comes from unpredictable…

Q: Quèstion 16 State two characteristics of a primary standard.

A: In redox titration primary standard such as pure  iron, sodium oxalate is used .

Q: 30 30 20 20 10 10 cm cm cm cm 1) (3) 2)

A: A ruler scale is a tool which is used to measure length and in both metric and customary units.  In…

Q: 3) For the results, discuss the significance of the following in terms of accuracy or precision: a)…

A:

Q: Liquid hexane (CH. (CH₂(CH₂) CH₂) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon…

A:

Q: How would you simplify the following expression?

A: The uncertainty is L213-12π2-L22. We have to simplify the above expression.

Q: The halogens are the elements of group 17 on the periodic table. Halogens combine easily with…

A: we are to discuss which type of compound is formed when halogen reacts with group 1 metals.

Q: CI + HO + HCI

A: Ethanoyl chloride reacts with cold ethanol instantly. It is a very exothermic reaction in which…

Q: In a study of the gas phase decomposition of dinitrogen pentoxide at 335 K N2O5(g)2 NO2(g) + ½ O2(g)…

A: According to our policy, experts allowed to answer one question at a time. Answer to the first…

Q: What is gravimetric analysis? Group of answer choices Density measurement Mass measurement…

A: Gravimetric analysis is a quantitative method of chemical analysis that involves the determination…

Q: What is the simplest CGS unit for "stroke"?

A: CGS stand for centimeter gram second.

Q: d and e pls

A: Molar mass of a compound is equal to the sum of atomic masses of all the atoms in that compound.

Q: HN NaBH 3 CN -~

A: The given reaction 8s a example of nucleophilic addition reaction.In the first step nucleophilic…

Q: Please check my work. Also, did I round to the appropriate number of significant figures

A: According to Charle's law, volume of a gas is directly proportional to the temperature of the gas at…

Q: Data & Results: Complete the table. TRIAL 1 TRIAL 2 TRIAL 3 Wt. of vinegar sample Vol. of vinegar…

A: % CH3COOH = Normality of NaOH * Volume of NaOH * Eq wt of CH3COOH * 100 / Weight of sample

Q: Tieg= lo0 %3D 4. Perform each conversion. a) 3.55 kg to grams

A: 4.  a) Given 3.55 kg

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.