Sketch the shape of the periodic table and mark off those areas where we find (a) metals, (b) nonmetals and (c) metalloids.

Q: The pH of a buffer solution containing 0.5 mole/litre of CH3COOH and 0.5 mole/litre CH3COONa has bee...

A:

Q: Acid/base titration of vinegar

A: Acid-base titration of vinegar is done in laboratories to find out the concentration of acetic acid....

Q: 15. A marble chip weighing one gram and once gram of powdered chalk (both CaCO,) were placed in two ...

A: Solution:           The rate of reaction can be increased by increasing the temperature of an acid u...

Q: Choose the BEST answer and provide an explanation/reasoning.

A:

Q: Chemistry Question

A: According to the Solubility rule, Solubility of salt depends upon the Ksp value of salt in water, me...

Q: how is the electronegativity of an element related to its bonding capacity. Elaborate idea with an e...

A: Electronegativity of the element is define as the tendency to attract the shared paired of the elect...

Q: Use your table of Heats of Formation to calculate the heat of reaction for the following reaction: Z...

A: Heat of formation :- The amount heat changes taking place when one mole of a substance is formed fro...

Q: An ocean outfall diffuser that discharges treated wastewater into the Pacific ocean is 5,000 m from ...

A: step: 1 of 4 Calculate the concentration of coliform in sea water after mixing using the equation. ...

Q: Hydrochloric acid solution with 0.015 M, if you take 50 ml from it and diluted by water to 150 ml (t...

A: Ans

Q: Calculate the kinetic energy of a 35.g bullet moving at a speed of 213.ms. Round your answer to 2 si...

A: Given :-  Mass of bullet = 35 g  Speed of bullet = 213 m/s  To calculate :- kinetic energy of bullet

Q: Use the Springall Roberts rules to predict the products of NADP, C12H10N2O2.

A: Carbon atoms are converted to carbon monooxide. Carbon monoxide is oxidized to carbon dioxide. All t...

Q: A 20.0%(m/m) solution of sodium hydroxide has a density of 1.2192g/cm3at 20.0 °C. Calculatethe molar...

A:

Q: Did I write the chemical formula correctly ? And can you help me balance the equation thank you

A: A  balanced chemical equation of a reaction is helpful to determine the stoichiometric quantities of...

Q: Calculate the energy required to heat 629.0mg of ethanol from −2.4°C to 19.9°C Assume the specific h...

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Q: A mixture of O.750 mol SO2 gas, 0.500 mol SO3 gas and 1.00 mol CO2 gas exerts a total pressure of 2....

A: option (b) is correct.

Q: Use your table of Heats of Formation to calculate the heat of reaction for the following reaction: 2...

A: Heat of formation for pure elements at room temperature value is Zero. Here Na, H2 and O2 these thre...

Q: What is occuring in this aldol reaction?

A: The given reaction is,

Q: 2.10 g of an unknown compound was dissolved in 15.00 mL of ethanol. The sample was placed in a 10.0 ...

A: Given : Mass of compound = 2.10 g Volume of ethanol = 15.00 mL = volume of solution                 ...

Q: , which reactant functions as a base?

A: According to the Bronsted-Lowry concept an acid is a proton donor and a base is a proton acceptor.

Q: Write the balanced chemical equation then write the complete ionic and then the net ionic equation f...

A: The reactants given are  1) Calcium hydroxide i.e Ca(OH)2 (aq)  2) Phosphoric acid i.e H3PO4 (aq)  

Q: A bond between an atom of S and an atom of Br can be classified as: purely covalent/nonpolar covalen...

A: 1)A non-polar covalent bond is a type of chemical bond that is formed when electrons are shared equa...

Q: 12. The most important effect of increasing tem- perature of a reaction is to A) change the reaction...

A: Given that  There is increase in temperature during the reaction

Q: Use the following table to predict the best acid / base pair for the desired pH/pOH value:pH = 7.15W...

A: Given : To predict the best acid/ base pair for the desired pH value of 7.15.  

Q: Plz use the given below periodic table to write the formula for the compound 1- bellium tigerite 2-...

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for...

Q: I need help calculating the missing theortical yield.    Name 3,4-dimethoxybenzaldehyde 1-indan...

A: Aldol condensation is a type of organic reaction in which an enol or enolate reacts with a carbonyl ...

Q: need help with doing the calculations for numbers 2,5, and 6. please check if I did calculations cor...

A: The concentration of the solution can be measured in various units the commonly used is molarity. Th...

Q: A gas occupies 340.6 mL under a pressure of 0.515 atm.  The volume is decreased to 276.6 mL.  The te...

A: Given :-  Initial pressure = 0.515 atm  Initial volume = 340.6 mL  Final volume = 276.6 mL  To calcu...

Q: which of the following compounds is most acidic?

A: A option is correct. Phenol is more acidic in comparison to other. Nature of aniline is basic as wel...

Q: 2Al+Fe2O3-->Al2O3+2Fe a. How many moles of Al are needed to react with 2.5 moles of Fe2O3? b. H...

A: The balanced reaction taking place is given as, => 2 Al + Fe2O3 --------> Al2O3 + 2 Fe   

Q: 1. Fill in the following table: Known conditions Equation needed Calculated unknown condit P = 1.5 a...

A:

Q: 5. Circle the species in the following pairs that exhibits stronger intermolecular forces: a. C2H6 o...

A: 5 a. C2H6 or C4H10 Both C2H6 or C4H10 are non polar and only have London dispersion forces. The larg...

Q: assign E or Z configuration.

A: Assign priority to the groups attached to each doubly bonded carbon atom according to the CIP (Cahn-...

Q: Which of the following sets of quantum numbers can describe an electron with spin down in a 5f orbit...

A: Qunatum numbers are a set of values ,which describes the position and energy of an electron in an at...

Q: Calculate pH of 0.050 M NaClO, given that the Ka for HClO is 3.0 ×10–8 pH= 5.46 pH= 8.53 ...

A: Option c is correct answer. pH= 10.11 

Q: What is the temperature in Celsius of a reaction in which 8.3 moles of N2 is produced at 1.23 atm an...

A: Moles of N2 (n) = 8.3 moles Pressure (P ) = 1.23 atm Volume (V) = 16.5 L Gas constant (R) = 0.0821 L...

Q: Rank surface tension from aighest (1) to lowest (3) 5. Circle the species in the following pairs tha...

A: 5. a. C4H10 b. HF c. CH3Cl d. NH3   

Q: A radioactive isotope has a half-life of 10,000 years. How old is the rock if the ratio of radioacti...

A: Ans

Q: Draw the organic products formed in attached reaction.

A: The organic products can be shown below,  

Q: which of the following is a boat conformation of cyclohexane?

A: Option B is correct , conformer B is called boat form of cycohexane.

Q: Use your table of Heats of Formation to calculate the heat of reaction for the following reaction: C...

A: Heat of reaction is given by ∆H=∆Hproduct-∆Hreactant where ∆H= Heat of reaction ∆Hproduct=Heat of fo...

Q: Problem attached

A: In classical thermodynamics, the spontaneity of the reaction is explained by Gibbs's free energy. If...

Q: What are the three rules for writing the electron configuration of elements?

A: The electron configuration of an element describes how electrons are distributed in its atomic orbit...

Q: I need help please

A:

Q: How many equivalents of strong acid are required to produce a good buffer (maximum buffering capacit...

A:

Q: rk for determining the total number of valence electrons and ker

A: In this structure first we find total no. Of valence electrons, then arrange these electrons to comp...

Q: Which of the following are exact numbers?a. There are 100 cm in 1 m.b. One meter equals 1.094 yards.

A: a is the exact numbers  b is not exact it is approximate value

Q: During the day, solar radiation is absorbed by NO3(g)NO3(g), resulting in its decomposition. Which o...

A: Given that, solar radiation absorbed by NO3 leads to it's decomposition. Hence, Concentration of NO3...

Q: A student followed the procedure in this experiment , using 29.5 mL of 2.41 molar HCl and 31.5 mL of...

A: Mass of mixture = 62.201 g Initial temperature = 21.9°C Final temperature = 31.0°C Change in tempera...

Q: Identify the BrA,nsted-Lowry acid In the following reaction. CH3CH,CH2OH, H,O %3D IV OII O IV O none...

A:

Q: The chemical reaction where an aldehyde or ketone reacts with an alcohol in the presence of an inorg...

A: Given :  

Group 14 Elements

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