Help plz and can you plz use terms
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A closed system initially containing 1×10^-3M H2 and 2×10^-3 at 448°C is allowed to reach equilibrium. Analysis of the equilibrium mixture show s that the concentration of HI is 1.87×10^ -3. Calculate Kc at 448°C for the reaction.
The diagram shows an animal cell.Which letter marks the location where carbon dioxide isproduced during respiration?WXYZ
Which metal is more active than H2?(1) Ag (3) Cu(2) Au (4) Pb
Which of the following equations has correct formulas and also is a balanced equation?a. CaCO3 - > CaO + CO3 b. 3KCl + HNO3 - > 3HCl + KNO3 c. 2Be + O2 - > 2BeO d. Mg + O2 - > MgO2
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? mol H₂O --------- 2.0x10²² molecules
Number of moles = Number of molecules / Avogadro's number
moles = 2.0x10²² * 1 / 6.02x10²³
= 2.0x10²² / 6.02x10²³
= 0.3322 moles
hope this helps!
B. The critical temperature is the temperature above which the liquid phase of a pure substance cannot exist.
C. The critical temperature is the temperature below which the liquid phase of a pure substance cannot exist.
D. The critical temperature is the temperature at which all three phases can coexist.
E. The critical temperature is the temperature at which the pure substance reaches, but cannot go beyond, the critical pressure.
Can someone explain this one?
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After temperature reaches certain treshold the difference between density of liquid and gas state disappears, and it is impossible to liquify the substance.
Answer:what do u mean tho
Explanation:
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Answer:
It is less dense than air so it will help the airship float, and it is not flammable so the airship is less likely to catch on fire. None of the other noble gases have similar or better reasons.
Explanation:
b. compound
c. solution
d. suspension
e. colloid
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The substances that can't be separated into simpler substances or converted into other substances by chemical processes are elements. They are fundamental substances and cannot be changed into other elements through chemical processes. The correct answer to the given question is option a. elements
The answer to your question is a. elements. In chemistry, elements are substances that cannot be separated into simpler substances or converted into another substance by chemical processes.
This is what makes them fundamental substances. Chemical processes can change compounds, solutions, suspensions, and colloids into different substances, but they cannot change an element into a different element. For example, hydrogen is an element that cannot be converted into any other element through chemical processes. It is fundamentally hydrogen.
The correct answer to the given question is option a. elements
For more such questions on elements, click on:
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The elements that can form acidic compounds are; sulfur, arsenic, selenium, antimony, silicon.
Acidic compounds are formed by nonmetals. Metallic elements form basic compounds. This means that rubidium does not form acidic compounds since it is a metal.
Also, xenon does not form compounds because it is a noble gas. Noble gases do not react with other elements to form compounds.
However; sulfur, arsenic, selenium, antimony, silicon are nonmetals and they form acidic compounds.
Learn more: brainly.com/question/14072179
The correct answer is Sulfur, Arsenic, selenium, silicon, and antimony.
approximate molecular mass of this gas?
A 30 grams
B 40 grams
C 20 grams
D 48 grams
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Answer:
30 grams
Explanation:
I got 40 wrong so I picked 30
Answer:
30 grams
Explanation:
I did the ck12