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Oduvanchick [21]
3 years ago
12

I need help can you help

Chemistry
1 answer:
telo118 [61]3 years ago
8 0
I can sure try to help!
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A system does 591 kJ of work and loses 256 kJ of heat to the surroundings.
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Answer:

-847kj

Explanation:

Delta E= -256+-591

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The hydrogen atom is not actually electronegative enough to form bonds to xenon. were the xenon-hydrogen bond to exist, what wou
Marat540 [252]

Answer : The structure of XeH_4 will be square-planar.

Explanation :

In the given molecule XeH_4, 'Xe' is the central atom and 'H' is the terminal atom.

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The number of electrons used in Xe-H bonding = 8 electrons

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The structure of XeH_4 is shown below.

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A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.
Eva8 [605]
C:H:O = 40/12 : 6,7/1 : 53,3/16 = 3,33 : 6,7 : 3,33 ≈ 1 : 2 : 1

CH₂O
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Einstein's formula tells us the amount of energy to which a given mass would be equivalent, if it were all suddenly turned into
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Einstein's famous equation, E = mc^2 relates the mass (m) of an object to energy (E). The speed of light (c), is the constant of proportionality. Einstein formulated the equation within his theory of special relativity. Indeed, a physical interpretation of this equation is that any given mass is equivalent to the energy given by the equation, if it were suddenly converted to energy. Therefore the answer to the question is true. 
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How is beryllium similar to calcium?<br>​
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Answer:

The second column on the periodic table of the chemical elements is collectively called the alkaline earth metal group: beryllium, magnesium, calcium, strontium, barium, and radium. Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties.

Explanation:

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