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Which of the following is/are means whereby a catalyst can lower the activation energy of a reaction? 1) decreasing the number of reactive molecules 2) altering the temperature within the cell to one appropriate

Chris Underdown asked Dec 27, 2024

by Chris Underdown

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In the modern periodic table, elements are ordered (a) according to decreasing atomic mass. (b) according to Mendeleev's original design. (c) according to increasing atomic number. (d) based on when they

SuperCheezGi asked Dec 27, 2024

by SuperCheezGi

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A tiny crystal of table salt (NaCl) contains 950. billion formula units of salt. What is the mass of this crystal, in grams? Chemical Formula: Work: Calculated answer: Molar mass: # sig figs: Final answer

Stutje asked Dec 27, 2024

by Stutje

8.3k points

1 answer

2 votes

117k views

When 724.0 J of heat are added to 102 g of a solid substance, the temperature of the solid increases by 44.2 K. What is the specific heat capacity of the solid?

AvadhP asked Dec 27, 2024

by AvadhP

8.1k points

1 answer

0 votes

103k views

A chemist reacted 17.25 grams of sodium metal with an excess amount of chlorine gas to produce sodium chloride (NaCl). If the percentage yield of the reaction is 88%, what is the actual yield? a) 18.96

Priyshrm asked Dec 27, 2024

by Priyshrm

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1 answer

2 votes

38.3k views

In the formation of sodium chloride, sodium__electrons and chlorine__electrons

Ruchit asked Dec 27, 2024

by Ruchit

8.2k points

1 answer

4 votes

233k views

What is the significance of shortening the fatty acid by one carbon in α-oxidation?

Mansoor Akram asked Dec 27, 2024

by Mansoor Akram

8.2k points

1 answer

0 votes

104k views

For each of the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely react with 17.9 g of the second reactant. Na2CO3(aq)+CuCl2(aq)→CuCO3(s)+2NaCl

JuanPablo asked Dec 27, 2024

by JuanPablo

8.4k points

1 answer

1 vote

78.1k views

What gas has the highest refractive index?

Hugronaphor asked Dec 27, 2024

by Hugronaphor

6.9k points

1 answer

1 vote

31.2k views

Is a solution a homogeneous mixture or a heterogeneous mixture? Explain your answer. (1 point)

Anthony Bobenrieth asked Dec 27, 2024

by Anthony Bobenrieth

8.5k points

1 answer

3 votes

78.8k views

Boron cannot form which one of the following anions? a. BF₆³⁻ b. BH₄⁻ c. B(OH)₄⁻ d. BO₂⁻

Pal Szasz asked Dec 27, 2024

by Pal Szasz

8.0k points

1 answer

1 vote

33.1k views

HBrO2 is a stronger acid than HBrO because HBrO2 has more oxygen atoms bonded to bromine. A. True B. False

Xtds asked Dec 27, 2024

by Xtds

7.3k points

1 answer

2 votes

29.0k views

This atom can form up to _____ single covalent bond(s). A. 1 B. 0 C. 4 D. 3 E. 2

Dave Durbin asked Dec 27, 2024

by Dave Durbin

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1 answer

2 votes

140k views

Butane (C₄H₁₀(g), Hf = –125.6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO₂ , Hf = –393.5 kJ/mol ) and water (H₂O, Hf = –241.82 kJ/mol) according to the equation below. What is the enthalpy

GreenROBO asked Dec 27, 2024

by GreenROBO

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1 answer

2 votes

222k views

The molecular formula of allicin, the compound responsible for the characteristic smell of garlic, is C6H10OS2. How many sulfur atoms are present in 5.00 mg of allicin?

Amit Tiwary asked Dec 27, 2024

by Amit Tiwary

7.8k points

1 answer

5 votes

58.7k views

The atom is the ________ unit of matter that retains the identity of the substance. A) smallest B) indivisible C) fundamental D) basic

Victorx asked Dec 27, 2024

by Victorx

7.8k points

1 answer

5 votes

161k views

What is a reaction written with TWO arrows instead of one called ?

Drashti Dobariya asked Dec 27, 2024

by Drashti Dobariya

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1 answer

1 vote

179k views

A bond's modified duration cannot be larger than its Macaulay duration assuming a positive yield-to-maturity. (True/False)

Ruben Decrop asked Dec 27, 2024

by Ruben Decrop

8.3k points

1 answer

4 votes

10.3k views

Write the empirical formulas for the following compounds: a) C₂H₅ b) CH₃O c) C₃H₈O₂ d) C₄H₁₀

Clarice Bouwer asked Dec 27, 2024

by Clarice Bouwer

8.4k points

1 answer

3 votes

214k views

What is the correct name for K2HPO4? a. dipotassium hydrogen phosphate b. potassium hydrogen phosphoxide c. potassium hydrogen phosphate d. potassium dihydrogen phosphate

Pat James asked Dec 27, 2024

by Pat James

7.8k points

2 answers

4 votes

28.9k views

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