Inorganic Chemistry Questions

The number of moles in 39.80 g of C₂H6(molar mass = 46.1 g/mol) is 1.658 x 10⁰ 9.552 × 10² 8.633 x 10-1 1.835 x 10³ none of these

Which of the following is not a conjugate acid-base pair? H₂SO4, SO HNO3, NO3 HC₂H302, C₂H₂O₂ H₂PO, HPO HBr, Br

Calculate the Normality of a solution that is prepared by dissolving 37 g of Ca(OH)2 in 375 ml solution.

Calculate the pH and pOH of 0.01M HCI solution. (HCI is a strong acid) a) pH b) POH

When a sample of solid at 35°C (specific heat capacity = 0.89 J/g °C) is heated using 75.5J of energy, its temperature was raised to 48°C. What is the mass of this solid? Give your answer using the correct significant figure If the mass of a single bean is 0.03 g, how many beans are in a 2.5 lb sack of beans (1kg=1000g, 1kg= 2.2 lb) Give your answer using the correct significant figure

We have a container enclosing a mixture of N₂(g) and O₂(g). The total pressure is 3.77 atm. The temperature is 25.00 °C and the volume of the container is 17.0 L. If the mass of N₂ in the container is 34.2 g, what is the partial pressure of O₂ (in atm) within the container?

For the following reaction, 27.3 grams of bromine are allowed to react with 15.9 grams of chlorine gas. bromine (g) + chlorine (g) bromine monochloride (g) What is the maximum amount of bromine monochloride that can be formed? 39.4 What is the FORMULA for the limiting reagent? Br What amount of the excess reagent remains after the reaction is complete? 3.80

In a 5.00 L steel container at 575 K, the partial pressures of H₂(g) and O₂(g) are respectively 17.86 and 13.21 atm. The H₂(g) and the O₂(g) react together to produce H₂O(g). The final temperature remains at 575 K and the volume remains at 5.00 L. What is the final total pressure (in atm)?

The density of a sample of NH3(g) at a pressure of 1.00 atm is 0.870 g/L. What is the root- mean-square speed (in m/s) of the molecules in this sample?

Heat of Formation Worksheet Use a standard enthalpies of formation table to determine the change in enthalpy for each of these reactions. a) NaOH(s) + HCl(g) ----> NaCl(s) + H₂O(g) b) 2 CO(g) + O2(g) ---> 2 CO₂(g) c) CH4(g) + 2 O2(g)---> CO₂(g) + 2 H₂O(l) d) 2 H₂S(g) + 3 O2(g) ---> 2 H₂O(1) +2 SO2(g) e) 2 NO(g) + O2(g) ---> 2 NO₂(g)

A chemist is trying to create as much glucose as possible, using the equation below. What changes could the scientist make to create more glucose? C6H12O6 + 6026CO2 +6H₂O A H=-2803kJ/mol Pressure: Concentration: Temperature:

Two catalysts may be used in a batch chemical process. Twelve batches were prepared using catalyst 1, resulting in an average yield of 86 and a sample standard deviation of 3. Sixteen batches were prepared using catalyst 2, and they resulted in an average yield of 89 with a standard deviation of 2. Assume that yield measurements are approximately normally distributed with the same standard deviation. Is there evidence to support a claim that catalyst 2 produces a higher mean yield than catalyst 1? Use a = 0.01. What is the type of test to be used? A F-test, two-tailed B z-test, left tailed C F-test, right-tailed D z-test, two tailed E F-test left tailed

What is the temperature change if 1.386 x 103 J is absorbed by 60.0 g of copper which has a specific heat capacity of 0.385 J/g °C? (ans. 60.0 °C)

The present American standard of living is less vibrant poor the richest

Take a look at the follow graph. Describe the general effect on the solubility of ionic compounds with increasing of temperature. Soubility of select ionic compounds in g of salt in 100g of H2O versus temperature in C from 0 to 100C.

Given is the mass of 4 sugar packages with the following masses: 2.541g 2.650g 2.100g 2.579g What is the average mass of the sugar packages? 2.480 g 2.4675 g 3.29 g 9.870 g 2.47 g 2.468 g

The specific heat capacity of zinc is 0.386 J/g °C. How many joules would be released when 454 grams of zinc at 96.0 °C were cooled to 28.0 °C? (ans. 1.19 x 104 J)

If 1.13 x 104 J of heat is added to a water sample and the temperature rises from 88.0 °C to its boiling point, what mass of water is in the sample? (ans. 225 g)

An instructor asks you to measure out 10.0 mL of a liquid. Which of the following glassware would work best? 5 types of classware: A) Erlenmeyer, B Graduated Cylinder, C) Pipet, D) beaker, E) Buret 25 types of classware: A) Erlenmeyer, B Graduated Cylinder, C) Pipet, D) beaker, E) Buret Buret and Pipet Buret and Beaker Graduated Cylinder and Pipet Graduated cylinder and buret Erlenmeyer and Beaker

Cognitive development: Around 7 years old to 11 years of age, the child understands that some things that have been changed can be returned to their original state. For example, water can be frozen and then thawed to become liquid again. This shift in cognitive development is referred to as: Seriation. Conservation Reversibility Classification

Calculate the number of joules released when 75.0 grams of water are cooled from 100.0°C to 27.5°C.

Of the following, which is a monosaccharide? glycogen sucrose arabinose lactose

Compare and contrast what happens to a Gram-positive bacterial cell in a hypotonic environment with what happens to a human cell placed in a hypotonic environment. If there are any major differences, please explain why.

Which of the following is a disaccharide? maltose chitin glucose cellulose

Hunter and Tyler are brothers in their thirties. They had a falling out last year because Tyler felt that Hunter was rude to his wife. They no longer speak to one another as a result of the conflict. What type of adult sibling relationship do Hunter and Tyler have? hostile competitive supportive longing apathetic

The humoral immune response is primarily involved in producing: A. Antibiotics B. Antibodies C. Fever D. Inflammation E. Tc cells

When a monosaccharide forms a cyclic hemiacetal, the carbon atom that contained the carbonyl group is identified as the ___________ carbon atom because Acetal; it forms bonds to an -OR and an -OR' Enantiomeric; depending on its position, the resulting ring can have a mirror image. OL: the carbonyl group is drawn to the left. D; the carbonyl group is drawn to the right. Anomeric; its substitutents can assume an alpha or beta

Of the following, a human blood disease that has been definitely shown to be due to a hereditary factor or factors is polycythemia pernicious anemia. leukemia Sickle cell anemia.

Which type of relational message involves communicating your interest to someone? control affinity immediacy affect respect

In the sentence below, one word is in italics. Following each sentence are four words or phrases. Select the word or phrase that best corresponds in meaning to the italicized word. Production of complex molecules, like proteins, is accomplished by replication. reproduction duplication fixation synthesis

In the small intestine, a digestive enzyme can break a bond between two amino acids in a protein by Inserting a carbon atom between them. Inserting a water molecule between them. Removing a carbon atom from one of them. Removing a water molecule from them.

A covalent bond between 2 amino acid molecules can be created by Removing a water molecule from them. inserting a water molecule between them. Inserting a carbon atom between them. Removing a carbon atom from one of them.

Which of the following is a typical sign of meningococcal meningitis? A. Inability to drink water B. Light colored stools C. Nausea D. Persistent headache E. Rash on the lower extremities

Passive immunization means: A. A person develops immunity after an infection B. A person dies before he can develop immunity C. A person is given a shot containing antibodies D. A person is vaccinated against tetanus or influenza E. A person is vaccinated using a live virus vaccine

An example of an organic compound is: ammonia salt glucose water

What is a scarce resource for an individual? Capital Land and labor Energy and skill

A grocery shop has two similar products of two different companies. Product X offers 20% more quantity for the same price offered before. Product Y offers 20% discount off the price of the same quantity. Which is more beneficial to the consumer and how much? 20% of discount, and 125 grams O20% of discount, and 120 grams 20% more of quantity, and 120 grams

Balance the redox reaction in an acidic solution using your preferred method. Show all steps and clearly indicate what species are being oxidized and reduced. P4+ HNO3 H3PO4 + NO

Balance the following redox reaction under basic conditions Cr³+ (aq) + CO₂(g) → Cr₂O72 (aq) + C₂04² (aq)

The reaction of a monosaccharide to form a disaccharide is an example of which of the following reactions? hydrolysis condensation oxidation reduction addition

This disease is typically spread by zoonotic transmission: A. Carbapenem-resistant Enterobacteriaceae B. Hepatitis B C. Influenza D. Meningococcal meningitis E. Rabies

This disease is primarily transmitted by vector transmission: A. Bacterial conjunctivitis B. Bacterial vaginosis C. Bubonic plague D. Hepatitis B E. HIV/AIDS

During the incubation period of disease, A. The pathogen is reproducing without any symptoms present B. The person feels some nonspecific symptoms C. The person is almost completely recovered from the disease D. The person is experiencing clear signs and symptoms of the disease E. The person is starting to feel better after the illness, but is still clearly sick

A newborn baby appears to be sick. A quick blood test reveals the presence of both IgG and IgM. Based on this, which of the following is true? A. The baby does not have an infection, since IgG and IgM are normal in a newborn B. The baby has an infection due to the presence of both IgM and IgG C. The baby has an infection due to the presence of lgG D. The baby has an infection due to the presence of IgM E. None of the above-it is not possible to predict based on this information

Oxidation of R₂CH-OH will produce a(an) no reaction carboxylic acid ketone aldehyde alkene

In general, which of the following microbes is the largest? A. Archaea B. Bacteria C. Helminths D. Protozoa E. Viruses

The primary immune response takes about days response days to reach a peak antibody: A. 24 hours B. 3 days C. 2 weeks D. 60 days E. 6 months

Fomites are involved in which kind of transmission? A. Direct contact B. Indirect contact C. Sexual D. Vector E. Vehicle

The name of the protein on the surface of B cells that specifically recognizes antigens is called: A. APC B. BCR C. CD4 D. MHC E. TCR

If a person has a fever of 102°C, and they complain of feeling cold, which of the following is most likely true? A. Their temperature is going higher B. Their temperature is going lower C. Their temperature is staying the same