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Recent questions in Chemistry
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
8.4k
points
Chemistry
high-school
1
answer
0
votes
31.9k
views
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
8.5k
points
Chemistry
college
1
answer
0
votes
76.5k
views
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
Chemistry
high-school
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
Chemistry
college
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
8.0k
points
Chemistry
high-school
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
Chemistry
high-school
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
Chemistry
high-school
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
Chemistry
college
1
answer
1
vote
78.1k
views
What gas has the highest refractive index?
Hugronaphor
asked
Dec 27, 2024
by
Hugronaphor
6.9k
points
Chemistry
high-school
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
Chemistry
college
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
Chemistry
high-school
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
Chemistry
high-school
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
8.5k
points
Chemistry
high-school
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
8.5k
points
Chemistry
high-school
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
Chemistry
high-school
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
Chemistry
high-school
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
7.8k
points
Chemistry
college
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
Chemistry
high-school
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
Chemistry
high-school
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
Chemistry
high-school
2
answers
4
votes
28.9k
views
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