Answer:
Solution given:
e) The heating of sodium carbonate to produces sodium oxide and carbon dioxide
Solution given:
<u>Balanced</u><u> </u><u>chemical</u><u> </u><u>equation</u><u>:</u>
<u>when sodium carbonate is heated it decomposed and form sodium oxide and carbon dioxide</u>
<u>f</u>) chromium (III) hydroxide plus sulfuric acid
<u>Balanced chemical equation:</u>
<u>When chromium (III) hydroxide react with sulfuric acid double displacement takes place and forms produce chromium(III) sulfate and water.</u>
g) aluminum metal plus chlorine gas
<u>When aluminum metal is added to chlorine gas</u><u> </u><u>Combination reaction takes place and forms aluminum chloride.</u>
Answer:
Br
|
Br-P-Br
|
Br
Explanation:
To calculate the valance electrons, look at the periodic table to find the valance electrons for each atom and add them together. P is in column 5A, so it has 5, Br is in column 7A, so it has 7 (multiply by 4 since there are 4 Br atoms to give 28) and there is a 1- charge, so add one more electron. 5+28+1=34, so there are 34 electrons to place. P would be the central atom, so place it in the middle. Place each Br around the P (as shown above) with a a single line connecting it. Each line represents 2 electrons, so 8 total have been place, leaving 26 remaining. Place 6 electrons around each Br (2 on each of the unbonded sides), which leaves 2 electrons remaining. The remaining pair of unbound electrons will be attached to the P between any two Br atoms. Phosphorus doesn't have to follow the octet rule, so it actually ends up with 10 valance electrons.
The amount of space that matter occupies is called its volume. Solids, liquids, and gases all have volume.
<span>Involuntary Muscles
</span>⇒ Involuntary Muscles <span>are muscles that contract without any conscious control.
The most important </span><span>Involuntary Muscle in the body is the heart. </span>
11.7 g = 0.0117 kg
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:)
