Write the balanced chemical equation for the addition of 2 Br2 to CH3C≡CH.

Answers

Answer 1
Answer: CH₃C≡CH + 2Br₂ → CH₃CBr₂CHBr₂

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Which of the following statements about subatomic particles best characterizes electrons? A positive charge, light, circling the nucleusB no charge, heavy, found in nucleusC negative charge, light, circling the nucleus D negative charge, heavy, circling the nucleus
NEED HELP AS SOON AS POSSIBLE!7. How many atoms are present in a 6.00 g sample of silver? a. 1.07 x 10^-1 atoms b. 6.47 x 10^2 atoms c. 3.35 x 10^22 atoms d. 3.61 x 10^24 atoms 8. How many atoms are present in 2.0 x 10^6 mol of carbon? a. 3.3 x 10^-18 atoms b. 4.0 x 10^-17 atoms c. 1.0 x 10^29 atoms d. 1.2 x 10^30 atoms 9. what mass is present in sample of AgNO3 containing 3.14 x 10^19 formula units? a. 5.21 x 10^-5 g b. 8.86 x 10^-3 g c. 1.13 x 10^2 g d. 1.92 x 10^4 g 10. How many molecules are present in 36.6 L of SO2 gas at STP? a. 1.36 x 10^-21 molecules b. 1.63 x 10^0 molecules c. 1.54 x 10^22 molecules d. 9.84 x 10^23 molecules
Find the molarity of the following solutions: 0.5 moles of sodium chloride is dissolved to make 0.05 liters of solution.

The distance between two points on a map is 0.704 kilometers. What is the distance in meters?

Answers

The distance of 0.704 kilometers is equivalent to 704 meters when converted, using the conversion factor that 1 kilometer equals to 1000 meters.

To convert the distance from kilometers to meters, we utilize the known fact that 1 kilometer is equivalent to 1000 meters. Thus, to get the equivalent of 0.704 kilometers to meters, simply multiply the given distance by 1000.

So, 0.704 kilometers * 1000 = 704 meters.

This means that this particular distance or length is the same as 704 meters when converted to meters from kilometers.

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704 meters is the answer

Why do cats purr when they are happy?

Answers

cats use the ability to purr for more than just that they use it when they are frightened, when they want other cats to know that they are friendly,and when its mealtime. but if your asking how they purr its just something in there brain telling them to purr.

The density of a sample of gasoline is .70g/cm.what is the mass of 1 liter of this gasoline

Answers

1 L = 1000 cm³

d = m / V

0.70 = m / 1000

m = 0.70 x 1000

m = 700 g 

The atoms in a sample are close together but can slide past one another. As the atoms lose energy, they move slower. The atoms become locked in place because of attractive forces between them.Which change of state is taking place?

gas to solid
gas to liquid
liquid to solid
solid to liquid

Answers

Answer:

liquid to solid

Explanation:

Answer:

liquid to solid

Explanation:

I got it right in edge

Which element has three unpaired electrons in its p orbital? carbon (atomic number 6) oxygen (atomic number 8) nitrogen (atomic number 7) beryllium (atomic number 4)

Answers

Answer: N (atomic number 7)


Explanation:


1) Due the electron distribution of each, taking into account Hund's rule to deal with pairing of electrons.


2) Hund's rule: each subshell orbital is occupied with single electrons of parallel spin before double occupation occurs.


That is, before any one orbital is doubly occupied, every orbital in a subshell is singly occupied with one electron, and all the electrons in singly occupied orbitals have the same spin, which means that they are unpaired.


3) Distributions:


a) C (atomic number 6) ⇒ 6 electrons:


⇒ 1s² 2s² 2p² ⇒ 1s² 2s² 2p ↑ ↑ : as per Hund's rule the two electrons on 2p are unpaired.


b) O (atomic number 8) ⇒ 8 electrons


⇒ 1s² 2s² 2p⁴ ⇒ 1s² 2s² 2p⇅ ↑ ↑: as per Hund's rule the two 2p electrons are unpaired


c) N (atomic number 7) ⇒ 7 electrons


1s² 2s² 2p³ ⇒ 1s² 2s² 2p↑ ↑ ↑: as per Hund's rule, the three 2p electrons are unpaired, so this is the answer to the question.


c) Be (atomic number 4) ⇒ 4 electrons


⇒ 1s² 2s² ⇒ none p electron.

Final answer:

Nitrogen has three unpaired electrons in its p orbital.

Explanation:

Among the given elements, nitrogen (atomic number 7) has three unpaired electrons in its p orbital.

In the electron configuration of nitrogen, it has a total of five electrons: 2 in the 1st energy level and 3 in the 2nd energy level. The p sublevel of the 2nd energy level contains three orbitals, each capable of holding 2 electrons. Therefore, the three unpaired electrons in nitrogen's p orbital are in three separate p orbitals in the 2nd energy level.

Carbon has two unpaired electrons in its p orbital, while oxygen has two unpaired electrons in its p orbital and two in its s orbital. Beryllium does not have any unpaired electrons in its p orbital.

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how many grams of ca(po4)2 would be produced when 1.5 grams of (nh4)3po4 is reacted with an excess of ca(oh)2

Answers

Molar mass :

(NH₄)₃PO₄ = 149.0 g/mol

Ca₃(PO₄)₂ = 310.17 g/mol

2 (NH₄)₃PO4 + 3 Ca(OH)₂= Ca₃(PO₄)₂ + 6 NHOH

2 * 149 g --------- 310.17 g
1.5 g -------------- ?

mass = 1.5 * 310.17 / 2 * 149

mass = 465.255 / 298

= 1.561 g of Ca₃(PO₄)₂

hope this helps!