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Anton [14]
3 years ago
11

What describes the current model of an atom​

Chemistry
1 answer:
vladimir2022 [97]3 years ago
8 0

Answer:

A tiny sense positively charge core called a nucleus in which nearly all the mass is concentratedm

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Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook
makvit [3.9K]

Answer:

Explanation:

The correct measurement is .710 s which is equal to .71 s so second measurement that is 0.71 s is most accurate measurement .

B.  0.71s is the most accurate .

Precision depends upon measuring instrument . Measurement by highly precise instrument has greater precision .

The measurement of 0.75 ± 0.002s must have been taken from high precise instrument because it is capable of making measurement upto 3 decimal points .

Hence

C 0.75 ± 0.002s is most precise measurement .

7 0
3 years ago
Could you please show work if you could
vovangra [49]

Answer:

can u writ qn

Explanation:

6 0
2 years ago
Carbon dioxide and water is produced when a hydrocarbon combines with ____________________.
Kaylis [27]
They combine with oxygen atoms, I think.
3 0
3 years ago
Please help me with this
Elina [12.6K]

Answer:

Speed and acceleration

Explanation:

i would say this bc the formula is related to acceleration if you looking at all the possible exceptions im not a expert in this range but im just giving you what i would pick so if you get it wrong im sorry lol.

4 0
3 years ago
Please help me I will do anything can you please show your work
oee [108]

Answer:

(1) 720 seconds (2) 10800 seconds (3) 17 dozens (4) 1.45 x 10^{25} (5) 13.29 moles

Explanation:

(1) 720 seconds

1 minute = 60 seconds

12 minutes = 720 seconds   (12 x 60)

(2) 10800 seconds

1 hour = 60 minutes  1 minute = 60 seconds

3 x 60 = 180 minutes in 3 hours

180 x 60 = 10800 seconds in 180 minutes that are in 3 hours

(3) 17 dozens

1 dozen = 12

204 ÷ 12 = 17 dozens  

(4) 1.45 x 10^{25}

8.00 moles CO2 x \frac{3 moles atoms}{1 moles CO2} = 24.0 moles atoms

24.0 moles x \frac{6.022 × 10^{23}  }{1 mole} } = 1.45 x 10^{25}

(5) 13.29 moles

sorry but I'm not fully sure if this one is correct

8 x 10^{24} x \frac{1 mole}{6.02 × 10^{23} } = 13.29 moles

7 0
2 years ago
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