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4 years ago

What is the element with the symbol Ba?

Chemistry

2 answers:

liubo4ka [24]4 years ago

8 0

Answer:

Barium is a chemical element with the symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal.

Explanation:

Vika [28.1K]4 years ago

3 0

Answer:

Barium

Explanation:

-Atomic #56

-5th element inn group 2

- soft

- silvery alkaline earth metal

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Bond length is the distance between the centers of two bonded atoms. On the potential energy curve, the bond length is the inter

vredina [299]

Answer:

The answer is "152 pm".

Explanation:

The bond length from the values inside the atomic radii is calculated according to the query. This would be the upper limit of a molecule's binding length.

The atomic radius of $H= 37.0 \ pm$

The atomic radius of $Br = 115.0 \ pm$

$\text{Bond length = Atomic radius of H + Atomic radius of Br}$

$= 37.0\ pm + 115.0 \ pm\\\\= 152\ pm$

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3 years ago

How many moles of nitrogen are present at STP if the volume is 846L

Artyom0805 [142]

A mole of any gas occupied 22.4 L at STP. So, the number of moles of nitrogen gas at STP in 846 L would be 846/22.4 = 37.8 moles of nitrogen gas.

Alternatively, you can go the long route and use the ideal gas law to solve for the number of moles of nitrogen given STP conditions (273 K and 1.00 atm). From PV = nRT, we can get n = PV/RT. Plugging in our values, and using 0.08206 L•atm/K•mol as our gas constant, R, we get n = (1.00)(846)/(0.08206)(273) = 37.8 moles, which confirms our answer.

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3 years ago

Can someone who expert in chemistry be my personal tutor? I'm so desperate

lions [1.4K]

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3 years ago

What compound is formed when methyloxirane (1,2-epoxypropane) is reacted with ethylmagnesium bromide followed by treatment with

Pavlova-9 [17]

Answer:

Pentan-2-ol

Explanation:

On this reaction, we have a Grignard reagent (ethylmagnesium bromide), therefore we will have the production of a carbanion (step 1). Then this carbanion can attack the least substituted carbon in the epoxide in this case carbon 1 (step 2). In this step, the epoxide is open and a negative charge is generated in the oxygen. The next step, is the treatment with aqueous acid, when we add acid the hydronium ion ( $H^+$ ) would be produced, so in the reaction mechanism, we can put the hydronium ion. This ion would be attacked by the negative charge produced in the second step to produce the final molecule: "Pentan-2-ol".

See figure 1

I hope it helps!

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3 years ago

Unless otherwise instructed, you may refer to the periodic table in the Chemistry: Problems and Solutions book for this question

Tom [10]

Answer: oxygen

There is the s,p,d and f blocks, from groups 1-2 that is the s block, 13-18 that’s the p block, 3-12 is the d block and the f would be lanthanide(#57-71) and actinide (#89-103).

8 0

3 years ago

What is the element with the symbol Ba?​

What is the element with the symbol Ba?