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Recent questions in Chemistry
What pH will the urine be if uric acid crystals are present?
Dmitrii Nechepurenko
asked
Oct 15, 2024
by
Dmitrii Nechepurenko
8.2k
points
Chemistry
high-school
1
answer
1
vote
106k
views
If 56.0g of N2 gas occupies 44.8L under standard conditions, then what is the mass of 134.4L of H2 gas under the same conditions? What mass of NH3 will be formed by the reaction between the two gases above?
Yogesh Tatwal
asked
Oct 15, 2024
by
Yogesh Tatwal
7.7k
points
Chemistry
high-school
1
answer
5
votes
215k
views
How many moles are in 95 grams of MgCO3
EvanK
asked
Oct 15, 2024
by
EvanK
8.7k
points
Chemistry
high-school
2
answers
0
votes
46.8k
views
The specific heat of marble is 0.858 J / g How much heat (in J) is required to raise the temperature of 20.0 g of marble from 22 °C to 45 °C?
Angrej Kumar
asked
Oct 15, 2024
by
Angrej Kumar
7.5k
points
Chemistry
high-school
2
answers
3
votes
149k
views
Which of the following is NOT included in the right-to-know training about a chemical A. Emergency procedures in case of spill or exposure B. Location of SDS C. Recommended PPE D. Cost of the Chemical
Patrick McDermott
asked
Oct 15, 2024
by
Patrick McDermott
8.2k
points
Chemistry
high-school
1
answer
4
votes
155k
views
The scientific method involves each of the following elements except
Lampyridae
asked
Oct 15, 2024
by
Lampyridae
7.7k
points
Chemistry
high-school
1
answer
5
votes
178k
views
What type of starch does the enzyme amylase react on?
Mike Critchley
asked
Oct 15, 2024
by
Mike Critchley
8.1k
points
Chemistry
high-school
1
answer
3
votes
195k
views
The chemical symbol representing acidulated phosphate fluoride is: 1) APF 2) CPF 3) APF₂ 4) CPF₂
TonySalimi
asked
Oct 15, 2024
by
TonySalimi
8.2k
points
Chemistry
high-school
1
answer
4
votes
135k
views
Why is energy efficiency important to CO₂ emissions?
Andrej Mohar
asked
Oct 15, 2024
by
Andrej Mohar
7.6k
points
Chemistry
high-school
1
answer
1
vote
227k
views
What color does red litmus paper turn when placed in an alkali?
Junia
asked
Oct 15, 2024
by
Junia
8.1k
points
Chemistry
high-school
1
answer
4
votes
201k
views
Why do certain compounds exhibit higher or lower melting and boiling points?
Outkkast
asked
Oct 15, 2024
by
Outkkast
7.6k
points
Chemistry
high-school
2
answers
1
vote
232k
views
The first sign that the drum of ammonia refrigerant is almost empty is A) The appearance of frost on the lower end of the drum B) The appearance of fog in the vicinity of the drum C) A hissing or whistling
Katrena
asked
Oct 15, 2024
by
Katrena
8.7k
points
Chemistry
high-school
1
answer
1
vote
160k
views
Find the number of ibuprofen molecules in a tablet containing 250.0 mg of ibuprofen (C13H18O2). Express your answer using four significant figures.
Richard Moore
asked
Oct 15, 2024
by
Richard Moore
8.0k
points
Chemistry
high-school
1
answer
0
votes
27.1k
views
Solutions A and B are separated by membrane potentials K but not to Cl-. Solution A is 100 mm KCl, and Solution B is 1 mm KCl. Which of the following statements about Solutions A and B is true? Options:
Bachcha Singh
asked
Oct 15, 2024
by
Bachcha Singh
8.5k
points
Chemistry
high-school
1
answer
0
votes
84.0k
views
When up to 0.8% carbon is added to iron, the resulting steel under equilibrium conditions will have the structure of:
Homa
asked
Oct 15, 2024
by
Homa
8.2k
points
Chemistry
high-school
1
answer
0
votes
151k
views
sugar-free and reduced sugar peanut butters are a popular trend, many of these products contain an artificial sweetener called xylitol. what species should never be given products or compounds that contain
Madina
asked
Oct 15, 2024
by
Madina
8.1k
points
Chemistry
high-school
1
answer
3
votes
54.7k
views
1. How many grams of C2H2 will be produced, if 7.00g of Ca(OH)2 are also produced in the following reaction?. CaC2 + 2H2O -> C2H2 + Ca(OH)2
Lesli
asked
Oct 15, 2024
by
Lesli
8.5k
points
Chemistry
high-school
1
answer
3
votes
14.5k
views
Which of the following represents the representative particle for sodium sulfide? A) NaSO4 B) Na2S C) Na2SO3 D) NaS
SpongeBobFan
asked
Oct 15, 2024
by
SpongeBobFan
8.2k
points
Chemistry
high-school
1
answer
5
votes
132k
views
A compound has a molar mass of ______ and the following composition: element mass ______.
John Korsnes
asked
Oct 15, 2024
by
John Korsnes
8.4k
points
Chemistry
high-school
1
answer
0
votes
33.0k
views
What is the autoionization of water at 25 C h2o?
ALZ
asked
Oct 15, 2024
by
ALZ
7.9k
points
Chemistry
high-school
1
answer
4
votes
77.8k
views
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