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2 years ago

12

Which scientist is credited with developing the first scientific atomic theory?

2 answers:

gulaghasi [49]2 years ago

7 0

Answer:

A. John Dalton

Explanation:

I took it :DD

Greeley [361]2 years ago

5 0

Answer:John Dalton

Explanation:

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How many kg are in 50 lb luggage bag

Darya [45]

There are 0.454 kg in 1 lb

Cross multiply

0.454 kg = 1 lb
X kg. = 50 lb

50* 0.454 = 22.7 kg

Answer : 22.7 kg in 50 lbs

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3 years ago

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Which statement is true for nuclear reactions but not for chemical reactions?

IrinaVladis [17]

Answer:maybe C

Explanation:

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I'd really appreciate help- this is due in around 8 hours :"D

Fed [463]

Answer:

atomic #= 1

protons equals one
Number of neutrons equals to 0
number of electrons equal to 1
mass number equals to 1

2.

atomic number equals to 1
Protons equals to 1
number of neutrons equals to 0
number of electrons equals to 0 because the plus sign means that it loses an electron
mass number equals to 1

3.

atomic number 17
number of protons 17
number of neutrons 18
number for electrons 18 Because negative sign means It's an anion which means it gains an electron
mass number 35

4.

12
12
12
10 loses 2 its a cation
24

5.

47
47
108-47 = 61
46 loses 1
108

6.

16
16
32-16 =16
18 it gains 2 electrons
32

there u go

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2 years ago

The capability of a substance to be stretched into thin wires without breaking is known as —

PSYCHO15rus [73]

The answer is ductility

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Use the image above to answer the question: Roger collected four rock samples and wrote a description of how each was formed. Wh

IrinaVladis [17]

Answer:

B

Explanation:

Cause metamorphic rock is formed by heat pressure overtime

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