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Recent questions in Chemistry
Identify if this mixture of baking soda and vinegar was a physical or chemical change. Justify your answer.
Vitalie
asked
Oct 2, 2024
by
Vitalie
8.6k
points
Chemistry
high-school
1
answer
3
votes
74.4k
views
In a fixed kVp system, what happens to dose and contrast?
Naaman Newbold
asked
Oct 2, 2024
by
Naaman Newbold
9.2k
points
Chemistry
high-school
1
answer
4
votes
88.3k
views
Which of the following elements is a transition metal? A) Nitrogen B) Sodium C) Zinc D) Oxygen
CommanderHK
asked
Oct 2, 2024
by
CommanderHK
9.0k
points
Chemistry
high-school
1
answer
4
votes
228k
views
What athletic shoes are not large passenger vehicles
Oherrala
asked
Oct 2, 2024
by
Oherrala
8.3k
points
Chemistry
high-school
1
answer
2
votes
153k
views
Which molecule or ion has a trigonal planar shape? A) ClO₄⁻ B) SO₃ C) PCl₅ D) H₂S
Chris HG
asked
Oct 2, 2024
by
Chris HG
8.7k
points
Chemistry
high-school
1
answer
1
vote
104k
views
Increasing the temperature of a solution where the solute in a gas, results in what?
Valkea
asked
Oct 2, 2024
by
Valkea
8.7k
points
Chemistry
college
1
answer
3
votes
89.8k
views
I don't know how to use that term in this explanation, can someone help me? I'd deeply appreciate it! :) Explain how lenses in glasses or contacts need to change the light waves that enter the eye for
VDVLeon
asked
Oct 2, 2024
by
VDVLeon
8.3k
points
Chemistry
high-school
1
answer
4
votes
32.4k
views
What is the formula of Sodium Sulfide? A) Na3S₂ B) NaS₂ C) Na₂S D) Nas
Ruben Reyes
asked
Oct 2, 2024
by
Ruben Reyes
7.8k
points
Chemistry
high-school
1
answer
0
votes
32.4k
views
Metal hydrides react with water to form hydrogen gas and metal hydroxide. For example, SrH2(s) + 2H2O(l) → Sr(OH)2(s) + 2H2(g) You wish to calculate the mass of hydrogen gas that can be prepared from 4.
Josef Korbel
asked
Oct 2, 2024
by
Josef Korbel
7.8k
points
Chemistry
college
1
answer
3
votes
8.5k
views
2. Do our magnetic poles switch? How do we know this? A. B.
Chrisbateskeegan
asked
Oct 1, 2024
by
Chrisbateskeegan
8.3k
points
Chemistry
college
1
answer
5
votes
16.7k
views
What conditions of a gas sample ought to remain constant for Charles's law to be used? 1) temperature 2) amount 3) pressure 4) volume
Mandom
asked
Oct 1, 2024
by
Mandom
8.7k
points
Chemistry
high-school
1
answer
3
votes
153k
views
What is N₂H₄: a) A neutral element b) A molecule c) An ion d) None of the above What are all of the atoms in N₂H₄: a) Nitrogen and hydrogen b) Sodium and chlorine c) Carbon and oxygen d) Potassium and
Karega
asked
Oct 1, 2024
by
Karega
8.3k
points
Chemistry
high-school
1
answer
4
votes
26.8k
views
How does an (S²⁻) ion differ from an electrically neutral sulfur atom? a) Atomic number b) Number of electrons c) Mass number d) Nuclear charge
Pankaj Jaju
asked
Oct 1, 2024
by
Pankaj Jaju
7.8k
points
Chemistry
high-school
1
answer
2
votes
59.9k
views
A gas of unknown identity diffuses at a rate of 83.3 mL/s in a diffusion apparatus. If carbon dioxide diffuses at the rate of 102 mL/s, what is the ratio of the diffusion rates of the unknown gas to carbon
Jacob McKay
asked
Oct 1, 2024
by
Jacob McKay
8.4k
points
Chemistry
high-school
1
answer
3
votes
103k
views
Calculate the heat produced by the complete combustion of 50g of methanoic acid.
Zerkz
asked
Oct 1, 2024
by
Zerkz
8.0k
points
Chemistry
college
1
answer
3
votes
79.8k
views
For the following reaction, what has been reduced? [4textCr + 3textO_2 + textH^+ + textOH^- rightarrow 2textCr_2textO_3 + textH_2textO] a) Chromium (Cr) b) Oxygen (O_2) c) Hydrogen ion (H^+) d) Hydroxide
KSFT
asked
Oct 1, 2024
by
KSFT
8.4k
points
Chemistry
high-school
1
answer
1
vote
193k
views
What is the mass in grams of 0.172 moles of Cr₄ (P₂O₇)₃?
Michele Orsi
asked
Oct 1, 2024
by
Michele Orsi
7.4k
points
Chemistry
high-school
1
answer
0
votes
70.9k
views
What mass of solid FeCl3 is formed when 200 mL of 0.375 N Fe3+ is mixed with 400 mL of 0.175 N Cl2? Please anwer
Aorcsik
asked
Oct 1, 2024
by
Aorcsik
7.6k
points
Chemistry
college
1
answer
3
votes
113k
views
The ingredient for an Italian dressing recipe calls for 200 mL of olive oil, 50 mL of white vinegar, and 20 mL of water. How many mL of olive oil would you need for a 1.5 L container of Italian dressing?
Derrell
asked
Oct 1, 2024
by
Derrell
8.8k
points
Chemistry
high-school
1
answer
3
votes
9.9k
views
Identify the function of each of the following in the body: Mg, Zn, I, and Na
Xaviera
asked
Oct 1, 2024
by
Xaviera
8.7k
points
Chemistry
high-school
1
answer
3
votes
77.3k
views
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