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Recent questions in Chemistry
What grape is used in Maury, Roussellion for making vin doux naturels?
Alupotha
asked
Dec 19, 2024
by
Alupotha
8.4k
points
Chemistry
high-school
1
answer
0
votes
187k
views
What is the largest single group of food additives?
Joshua Wolff
asked
Dec 19, 2024
by
Joshua Wolff
8.7k
points
Chemistry
high-school
1
answer
4
votes
19.1k
views
Structure of the atom was developed since ___ BC. Option 1: 500 BC Option 2: 2000 BC Option 3: 1800 BC Option 4: 100 BC
Cordula
asked
Dec 19, 2024
by
Cordula
7.5k
points
Chemistry
high-school
1
answer
0
votes
159k
views
Calculate the wavelength when an electron in a hydrogen atom undergoes a transition from n=3 to n=2?
Jose Bagatelli
asked
Dec 19, 2024
by
Jose Bagatelli
8.1k
points
Chemistry
high-school
1
answer
5
votes
212k
views
If you know that a reaction is non-reversible, and know its change in entropy value, how can you determine its change in enthalpy?
Thomas Owens
asked
Dec 19, 2024
by
Thomas Owens
8.6k
points
Chemistry
high-school
1
answer
4
votes
28.4k
views
Find the age of the mammal hide to the nearest year. A farmer in China discovers a mammal hide that contains 71% of its original amount of C-14. Enter the correct answer. A. N=0.25N0 B. N=0.29N0 C. Both
Knight Forked
asked
Dec 19, 2024
by
Knight Forked
7.5k
points
Chemistry
high-school
1
answer
0
votes
229k
views
How many grams of sucrose would the hiker have to metabolize (quickly) to replace the heat of evaporating 1.00 L of water so that her temperature would not change? You can use the enthalpy of reaction
Donnalee
asked
Dec 19, 2024
by
Donnalee
8.1k
points
Chemistry
high-school
1
answer
3
votes
127k
views
What is the correct chemical equation for cellular respiration? a) CO2 + sunlight + H2O --> O2 + CH7206 b) CO2 + O2 + H20 --> ATP + CH,206 c) O+ CH2O --> CO2 + ATP + H2O d) O2 + ATP + H2O --> CO2 + CH1206
Tauren
asked
Dec 19, 2024
by
Tauren
8.6k
points
Chemistry
high-school
1
answer
2
votes
132k
views
Modern periodic law states that properties of elements repeat in a regular pattern when the elements are arranged in order of increasing _____. A) density B) atomic number C) atomic mass D) periodicity
Neil Griffin
asked
Dec 19, 2024
by
Neil Griffin
8.2k
points
Chemistry
high-school
1
answer
1
vote
71.9k
views
What are the names and formulas of all of the compounds that contain the nitrate ion (NO₃–)?
Rizwan Siddiquee
asked
Dec 19, 2024
by
Rizwan Siddiquee
8.4k
points
Chemistry
high-school
1
answer
2
votes
225k
views
To raise PH what may be added to swimming pool water? A) Bromine B) Sodium chloride C) Soda Ash D) Muriatic Acid
Bojan Bozovic
asked
Dec 19, 2024
by
Bojan Bozovic
7.8k
points
Chemistry
high-school
1
answer
4
votes
46.0k
views
How do we determine the actual weight of the water dispensed?
Rajanikant Shukla
asked
Dec 19, 2024
by
Rajanikant Shukla
7.0k
points
Chemistry
high-school
1
answer
0
votes
110k
views
Discuss the roles of specific named chemicals from the following classes and how they act as deterrents and stimulants for insect feeding: An alkaloid, a terpenoid phenylpropanoid compound.
Karl Giesing
asked
Dec 19, 2024
by
Karl Giesing
7.9k
points
Chemistry
high-school
1
answer
3
votes
156k
views
Calculate the enthalpy change (kJ) for a neutralization reaction between 25.0 mL of 1.0 M HCl and 25.0 mL of 1.2 M NaOH. The literature value of the reaction is -55.8 kJ/mol. whatos the limiting reactant?
Theosp
asked
Dec 19, 2024
by
Theosp
8.8k
points
Chemistry
college
1
answer
1
vote
233k
views
Consider the balanced chemical reaction below. How many grams of CaSO₄ can be produced from 1.00 kg of Ca₃(PO₄)₂ and 1.00 kg of H₂SO₄? Ca₃(PO₄)₂(s) + 3 H₂SO₄(aq) → 3 CaSO₄(s) + 2 H₃PO₄(aq)
Jindra Lacko
asked
Dec 19, 2024
by
Jindra Lacko
7.2k
points
Chemistry
high-school
1
answer
0
votes
12.5k
views
Which of the following would produce the least amount of smoke when burning? A) Dry wood B) Paper C) Plastics D) Rubber
Uros
asked
Dec 19, 2024
by
Uros
7.9k
points
Chemistry
high-school
1
answer
3
votes
46.4k
views
if the reaction of 1.00 g of CaCl₂ with 1.00 g of K₂CO₃ yielded 0.510 g of CaCO₃, what was the percent yield (%) of the reaction?
Martin Baulig
asked
Dec 19, 2024
by
Martin Baulig
8.1k
points
Chemistry
high-school
1
answer
4
votes
209k
views
The specific heat of copper is 0.0920 cal/g °C, and the specific heat of silver is 0.0562 cal/g °C. If 100 cal of heat is added to one g of each metal at 25°C, what is the expected result? a)The two samples
HasanToufiqAhamed
asked
Dec 19, 2024
by
HasanToufiqAhamed
7.8k
points
Chemistry
high-school
1
answer
5
votes
80.6k
views
Which statement provides the best description of an ionic bond? A. A high electron density between two positively charged atomic nuclei serves to attract the nuclei to each other. B. The negative charge
Egoldx
asked
Dec 19, 2024
by
Egoldx
8.1k
points
Chemistry
high-school
1
answer
0
votes
37.0k
views
How many grams are present in 1.75 moles of carbon dioxide, CO2?
Abul Hasnat
asked
Dec 19, 2024
by
Abul Hasnat
8.4k
points
Chemistry
college
1
answer
4
votes
175k
views
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