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Lana71 [14]
3 years ago
8

How was the structure of the atom discovered

Chemistry
1 answer:
Gennadij [26K]3 years ago
4 0

Answer:

read down below

Explanation:

Building on the Curies' work, the British physicist Ernest Rutherford (1871–1937) performed decisive experiments that led to the modern view of the structure of the atom. ... Because it was the first kind of radiation to be discovered, Rutherford called these substances α particles.

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On may 10th it's gonna be my birthday and my mum don't know what to get me what do u think i would like my bio: creative,artisti
pickupchik [31]

Answer:

It’s past your b day... sorry

Explanation:

8 0
3 years ago
How many micrograms of iron were in the 8.0 mL sample of Greg's blood?
Alenkinab [10]
Answer is: there is 3,36 micrograms of iron in <span>sample of Greg's blood.
</span>m(Fe) = 42 mcg(micrograms).
V(Fe) = 1 dL = 1 dL · 100 mL/1dL.
V(Fe) = 100 mL.
Make proportion: m(Fe) : 8 mL = 42 mcg : 100 mL.
100 mL · m(Fe) = 8 mL · 42 mcg.
m(Fe) = 336 mL·mcg ÷ 100 mL.
m(Fe) = 3,36 mcg.
4 0
3 years ago
The following boiling points correspond to the substances listed. Match the boiling points to the substances by considering the
Julli [10]

Answer:

CH₄                                - 162 ⁸C

CH₃CH₃                          -88.5 ⁸C

(CH₃)₂ CHCH₂CH₃         28 ⁸C

CH₃3(CH2)₃CH₃             36 ⁸C

CH₃OH                           64.5 ⁸C

CH₃CH₂OH                     78.3 ⁸C

CH₃CHOHCH₃                82.5 ⁸C

C₅H₉OH                         140 ⁸C

C₆H₅CH₂OH                   205 ⁸C

HOCH₂CHOHCH₂OH    290 ⁸C

Explanation:

To answer this question we need first to understand that for organic compounds:

a. Non polar compounds have lower boiling points than polar ones of similar structure and molecular weight.

b. Boiling points increase with molecular weight.  In alkane compounds if we compare  isomers, the  straight chain isomer will have a higher boiling point than the branched one (s) because of London dispersion intermolecular forces.

a. The introduction of hydroxyl groups increase the intermolecular forces and hence the boiling points because the electronegative oxygen, and, more importantly the presence  of hydrogen bonds.

Considering the observations above, we can match the boiling points as follows:

CH₄                                - 162 ⁸C

CH₃CH₃                          -88.5 ⁸C

(CH₃)₂ CHCH₂CH₃         28 ⁸C

CH₃3(CH2)₃CH₃             36 ⁸C

CH₃OH                           64.5 ⁸C

CH₃CH₂OH                     78.3 ⁸C

CH₃CHOHCH₃                82.5 ⁸C

C₅H₉OH                         140 ⁸C

C₆H₅CH₂OH                   205 ⁸C

HOCH₂CHOHCH₂OH    290 ⁸C

Note: There was a mistake in the symbols used for the  162 and 88.5 values which are negative and correspond to the common gases methane and ethane

7 0
3 years ago
The cheetah has been clocked at 112 km/Hr. What speed would this be in ft/sec?
zhannawk [14.2K]
All you have to do in convert two units. You need to know that there are 3600 seconds in an hour, and one kilometer is ~3,280.8399 feet. 3,280.8399 * 112 is equal to 367454.0688 feet per hour. Now divide it by 3600 to get it into seconds. That is equal to 102.07057466666667 feet per second. That's your answer.
6 0
4 years ago
Which of the following best describes the movement of particles in a solid?
Volgvan

Answer:

A

Explanation:

particles are frozen and hence will vibrate in their fixed positions

5 0
3 years ago
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