Hot questions

0 votes

1 answer 40 views

A sample of an unknown compound was analyzed using elemental analysis, and the results showed that the compound contains 12.8% hydrogen, 49.2% carbon, and 38.0% oxygen by mass. What is the empirical formula of the compound?

asked Jan 22 in Analytical Chemistry by HermineOverb (2.1k points)

0 votes

1 answer 120 views

According to the evolutionary psychology theory, what is the purpose of emotions?

asked Jan 20 in Psychology by TommyBarfiel (2.2k points)

0 votes

1 answer 40 views

A metal rod of 3 cm diameter and 20 cm length is placed in a solution of hydrochloric acid with a pH of 2 at 25°C. The metal has a critical pitting temperature of 40°C and a standard electrode potential of -0.44V. Assuming that the rod is polarized to a potential of -0.50V, what is the corrosion current density (in mA/cm²) of the metal in the given environment?

asked Jan 22 in ElectroChemistry by DemetriusCha (1.7k points)

0 votes

1 answer 49 views

A chemical engineering firm has been tasked with designing a chemical reactor for the synthesis of ammonia gas from nitrogen and hydrogen gases. The plant requires a production of at least 1000 kg/h of ammonia gas, and the reactor should operate at a pressure of 200 atm and a temperature of 400°C. The student should determine the optimal size and design of the reactor by considering the reaction kinetics, thermodynamics, and fluid dynamics principles. The student should also select appropriate catalysts and determine the flow rate of the reactants required to achieve the desired production rate.

asked Jan 22 in Chemical engineering by LeroyBothwel (1.9k points)

0 votes

1 answer 122 views

What is the aim of narrative therapy?

asked Jan 20 in Psychology by MargheritaAn (2.0k points)

0 votes

1 answer 41 views

A chemistry student wants to investigate the activation energy for a reaction between hydrogen and chlorine gases. The student measures the initial and final temperatures of the reaction mixture, and the rate of gas evolution. Based on this information, the student wants to calculate the activation energy of the reaction using the Arrhenius equation. What steps should the student follow to determine the activation energy of the reaction?

asked Jan 22 in Chemical reactions by SharonMendis (2.0k points)

0 votes

1 answer 114 views

According to Eysenck's trait theory, what are the three major dimensions of personality?

asked Jan 20 in Psychology by 540252730007 (1.9k points)

0 votes

1 answer 119 views

When was the first edition of the Diagnostic and Statistical Manual of Mental Disorders DSM published?

asked Jan 20 in Psychology by DebraKeys12 (1.7k points)

0 votes

1 answer 77 views

Balance the chemical equation for the reaction between iron (III) oxide and aluminum to produce iron and aluminum oxide.

asked Jan 21 in Inorganic Chemistry by MarilouBinga (2.4k points)

0 votes

1 answer 120 views

When was the concept of anchoring introduced?

asked Jan 20 in Psychology by VictorR1855 (2.2k points)

0 votes

1 answer 80 views

Identify the number of chiral centers present in (2R,3S)-butane-1,4-diol and draw all possible stereoisomers for the compound.

asked Jan 21 in Organic Chemistry by RobertoMundy (1.7k points)

0 votes

1 answer 41 views

A chemistry student wants to buffer a solution with a pH of 4.5. The student adds 0.1 mol of a weak acid buffer to 0.1 mol of a conjugate base. Taking the pKa value of the buffer into consideration, determine how much stronger an acid in the same buffer system would need to be added to the solution to shift the pH from 4.5 to 4.0, assuming temperature and pressure are constant.

asked Jan 22 in Chemical equilibrium by CaitlynHoran (1.8k points)

0 votes

1 answer 114 views

When was the study on the effects of self-compassion on positive body image published?

asked Jan 20 in Psychology by LavadaKissne (2.4k points)

0 votes

1 answer 76 views

What is the oxidation state of nitrogen in NH4NO2?

asked Jan 21 in Inorganic Chemistry by KeithAnthon1 (1.9k points)

0 votes

1 answer 134 views

Why is conceptual clarity an important criterion for evaluating neuroscience theories?

asked Jan 20 in Psychology by CarolynIan00 (1.9k points)

0 votes

1 answer 111 views

When is social impact strongest?

asked Jan 20 in Psychology by BradConger9 (1.8k points)

0 votes

1 answer 76 views

A chemistry student needs to balance the chemical equation for the reaction between iron(III) oxide and carbon monoxide, which produces iron and carbon dioxide. Write and balance the equation using the smallest possible whole numbers.

asked Jan 21 in Inorganic Chemistry by ElviaU45322 (2.2k points)

0 votes

1 answer 116 views

What is the difference between borderline personality disorder and narcissistic personality disorder?

asked Jan 20 in Psychology by FranY1408156 (2.2k points)

0 votes

1 answer 76 views

Here is a precise problem for the student to solve:Balance the chemical equation for the reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl) to form sodium chloride (NaCl) and water (H2O).

asked Jan 21 in Inorganic Chemistry by PriscillaLaf (1.6k points)

0 votes

1 answer 113 views

What is the information processing theory in cognitive psychology?

asked Jan 20 in Psychology by ReinaldoBull (2.2k points)

Categories