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Anna71 [15]
3 years ago
10

Which statement about hydrogen bonding is true? Select one:

Chemistry
1 answer:
Alexandra [31]3 years ago
8 0

Answer:

E.

Explanation:

All answers other than E have the incorrect bonding capabilities or other incorrect information.

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Which of the following are changing when a change of state is occurring?
Greeley [361]

Answer:

What are the options?

Explanation:

7 0
3 years ago
What amount of acid is esterified if a mixture consist initially of 1.0mole of ethanoic acid,1.0mole of ethanol and 1.0mole of w
ale4655 [162]

Answer:

0.54 mole

Explanation:

                                     CH3COOH    CH3CH2OH   CH3COOCH2CH3    H2O​

Initial concentration   1.0 mole         1.0 mole                0 mole                  1.0mol

Change                          - x                   - x                      + x                          + x  

Equilibrium                   (1.0 - x)          (1.0 - x)                   x                       (1.0 + x)

K = [CH3COOCH2CH3]*[H2O​]/[CH3COOH]*[CH3CH2OH]

x*(1.0+x)/(1.0-x)(1.0-x) = 4.0

x+x²=4*(1-x)²

x+x² = 4(1² - 2x + x²)

x + x² = 4 - 8x + 4x²

4 - 8x + 4x²- x² - x= 0

3x² - 9x + 4 = 0

x=2.5 , x=0.54

2.5 mole of acid cannot be esterified, because there is only 1.0 mole of acid,

so answer is 0.54 mole.

3 0
4 years ago
Provide your answer in the following format: [element name], [chemical family]
erastova [34]

Answer: Bismuth (Bi) , Nitrogen family

Explanation:

As the element has 5 valence electrons in the sixth energy level, which mens it belongs to 6th period as the valence electron has entered the 6th energy level.

Now as the electrons are  filled according to afbau's rule , the electronic configuration of the element will be :

[Xe]4f^{14}5d^{10}6s^26p^3

Now as the atomic number of element is equal to the number of electrons in a neutral atom , the atomic number is 83 and the element is Bismuth (Bi). As the last electron enters p -subshell , it is  a p block element. It lies in group 15 which is nitrogen family.

8 0
3 years ago
PLZ HELP ME!!!!!!!!! WILL GIVE BRAINEST!!!!!!
Savatey [412]

Answer:

Condense and explode.

Explanation:

matter from the space can condense to form a nebula or matter from a star can explode to form a nebula.

8 0
3 years ago
What is mean by the term event dating.
Shkiper50 [21]

Answer:

Ima LOOK FOR ONE FOR YOU

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