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Brilliant_brown [7]
4 years ago
10

If you wanted to heat a substance without using a flame due to an abundance of flammable gas, you would use which of the followi

ng?
Chemistry
1 answer:
SashulF [63]4 years ago
4 0
As the temperature rises above 130°F (55°C), a chemical reaction occurs and may sustain itself. This reaction does not require oxygen, but the flammable gases produced are at a temperature above their ignition point. These gases will ignite when they come in contact with the air.
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Which of these elements is most likely to be a colorless gas based on the type of element? Al, Pd, Ar, Cs
Solnce55 [7]
Answer:

Al (Aluminum)
5 0
4 years ago
Predict the sign of the entropy change of the system for each of the following reactions. (a) N2(g)+3H2(g)→2NH3(g) (b) CaCO3(s)→
Andrew [12]

Answer:

a. Negative

b. Positive

c. Negative

d. zero

Explanation:

Entropy is measure of disorder. Positive entropy implies that a system is becoming more disordered. The opposite is true.

(a) N2(g)+3H2(g) → 2NH3(g) Negative because the system is becoming less disordered since the number of gaseous moles is decreasing

(b) CaCO3(s)→CaO(s)+CO2(g)  Positive because a solid produces a gas which is more disorder therefore there is an increase in entropy

(c) 3C2H2(g)→C6H6(g) Negative because the number of moles of a gas decrease meaninng there is less disorder

(d) Al2O3(s)+3H2(g) → 2Al(s)+3H2O(g) zero because the gaseous moles do not change

5 0
4 years ago
How many electrons are in the outermost shell of oxygen<br>​
Maurinko [17]

Answer:

6

Explanation:

electronic configuration is 2,6.

From electronic configuration we can see that oxygen have 6 electrons in its outermost shell.

6 0
2 years ago
Which statement is correct? Group of answer choices none of these H2O is linear. The bonds in LiF have a more covalent character
Sergio [31]

Answer: The statement molecule ClO_{2} cannot be accurately described by a Lewis structure consistent with the octet rule, is true.

Explanation:

As the chemical formula of water is H_{2}O and since it contains electronegative oxygen atom which also has 2 lone pair of electrons. Hence, lone pair-bond pair repulsion occurs due to which water has a bent shape structure.

The compound LiF contains metal lithium and non-metal fluorine. In order to obtain stability lithium donates its valence electron to the fluorine atom leading to the formation of an ionic bond. Hence, LiF is an ionic compound and not a covalent compound.

Generally, ionic compounds are polar in nature. For example, KOH is a polar compound and Cl_{2} is a non-polar compound.

Thus, we can conclude that the statement molecule ClO_{2} cannot be accurately described by a Lewis structure consistent with the octet rule, is true.

7 0
3 years ago
Can someone help me. I fell asleep in class. T-T
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I believe its B Reproduces sexually
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3 years ago
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