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Consider the following processes: 1. 2A + (1/2)C, (H_1= 19 , kJ/mol) 2. (3/2B + 4C →2A + C + 3D), (H_2 = -3 , kJ/mol) 3. (E + 4A + C), (H_3= 10 , kJ/mol) Calculate (H) for: (C + E + 3D). A) 23 kJ/mol B)

Yogee asked Dec 24, 2024

by Yogee

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2 votes

231k views

Are nobel gasses radioactive, monatomatic?

SuperFrog asked Dec 24, 2024

by SuperFrog

8.2k points

1 answer

0 votes

61.8k views

What are the complementary strands of DNA?

Brian Stinar asked Dec 24, 2024

by Brian Stinar

8.0k points

1 answer

3 votes

52.1k views

A 23.6g sample of an unknown gas occupies a volume of 12.0L at standard temperature and pressure. What is the molecular mass of this gas.

Joe Pitz asked Dec 24, 2024

by Joe Pitz

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2 answers

1 vote

193k views

How many atoms are present in each of these formula units: a) Ca(HCO₃)₂ b) C₁₂H₂₂O₁₁ c) Fe(ClO₃)₂ d) Fe(ClO₃)₂

Nicholas Hart asked Dec 24, 2024

by Nicholas Hart

8.1k points

1 answer

1 vote

215k views

The reaction a(g)+2b(g)→c(g)+d(g) is an elementary process. In an experiment, the initial pressure of a and b are Pa atm and Pb atm. When t, the rate of the reaction relative to the initial Options:

John Stamos asked Dec 24, 2024

by John Stamos

9.0k points

1 answer

4 votes

155k views

Thermite is a mixture of iron(iii) oxide and aluminum powders that undergoes a reaction to form solid aluminum oxide and molten iron. Fe₂O₃(s) + 2Al(s) → Al₂O₃(s) + 2Fe(l) using the balanced reaction above,

Peoro asked Dec 24, 2024

by Peoro

8.0k points

1 answer

1 vote

43.3k views

What structural characteristic is shared by the aldehydes and the ketones?

Sagi Medina asked Dec 24, 2024

by Sagi Medina

7.0k points

1 answer

2 votes

110k views

Parts of a pesticide labeling include the following: a. Ingredient statement b. Signal words and symbols c. Precautionary statements d. Storage and disposal directions e. All of the above

Andrew Kuklewicz asked Dec 24, 2024

by Andrew Kuklewicz

7.3k points

1 answer

2 votes

117k views

penicillin is hydrolyzed and thereby rendered inactive by penicillinase an enzyme present in some resistant bacteria. the mass of this enzyme in staphylococcus aureus is 29.6 kDa. if the Vmax for 1x 10⁻⁹

Elan Utta asked Dec 24, 2024

by Elan Utta

8.3k points

1 answer

3 votes

174k views

How much heat in kilocalories is required to melt 2.6 mol of isopropyl alcohol (rubbing alcohol; molar mass = 60.0 g/mol)? The heat of fusion and heat of vaporization of isopropyl alcohol are 21.4 cal/g

Bandham Manikanta asked Dec 24, 2024

by Bandham Manikanta

8.4k points

1 answer

1 vote

3.7k views

For the reaction H₂(g) + Cl₂(g) → 2HCl(g), ΔG° = -190.2 kJ and ΔS° = 20.0 J/K at 278 K and 1 atm. The maximum amount of work that could be done by this reaction when 2.07 moles of H₂(g) react at standard

Alexandru R asked Dec 24, 2024

by Alexandru R

7.6k points

1 answer

4 votes

80.6k views

What is the formula for phosphorous trichloride? 1) PC3 2) PCL 3) PCl₃ 4) P3CL

Toblerpwn asked Dec 24, 2024

by Toblerpwn

7.9k points

1 answer

5 votes

26.8k views

The first element in the modern periodic table is: (1) Hydrogen (2) Lithium (3) Helium (4) Oxygen

Cocoapriest asked Dec 24, 2024

by Cocoapriest

8.3k points

1 answer

5 votes

177k views

Why does the symbol for the element sulfur and the formula for a molecule of sulfur differ? a) Chemical convention b) Historical reasons c) To distinguish between atoms and molecules d) Both b and c

Aisbaa asked Dec 24, 2024

by Aisbaa

7.6k points

1 answer

2 votes

180k views

What is a homogeneous mixture of particles so small they can't be seen and won't settle to the bottom of the container? a. Solution b. Suspension c. Emulsion d. Compound

Hylianpuffball asked Dec 24, 2024

by Hylianpuffball

9.0k points

1 answer

1 vote

135k views

How many moles of lithium fluoride (LiF) are present in a 39 gram sample?

Ivan Shakhov asked Dec 24, 2024

by Ivan Shakhov

8.3k points

1 answer

1 vote

132k views

Compound A, B only contain X, Y elements. Compound A (4.0g) contains 1.5g X; Compound B (16.5g) contains 9.0g X. If Compound A can be written as XY2, what would Compound B be written as?

Prabhu Murthi asked Dec 24, 2024

by Prabhu Murthi

8.6k points

1 answer

1 vote

169k views

a 50 ml solution of 0.173 m koh is titrated with 0.346 m hcl. calculate the ph of the solution after the addition of each given amount of hcl

FelixFortis asked Dec 24, 2024

by FelixFortis

8.7k points

1 answer

4 votes

100k views

Find out the solubility of the nios voltage in 1 molar NaOH. Given that any product of the elements is 15, determine: High solubility

Bruha asked Dec 24, 2024

by Bruha

7.6k points

1 answer

1 vote

219k views

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