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Sonbull [250]
3 years ago
10

How many minutes are in 230 seconds?

Chemistry
2 answers:
DIA [1.3K]3 years ago
8 0

Answer:

230 Seconds = 3.83333333 Minutes

Explanation:

AlexFokin [52]3 years ago
7 0

Answer:

3 minutes and 50 seconds

Explanation:

If there are 60 seconds in 1 minute..

60, 120, 180 (1 minute, 2 minutes, 3 minutes)

230 - 180 = 50

So it's 230 seconds consists of 3 minutes and 50 seconds.

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as you move down a group in the periodic table, atomic size generally a. increases. b. decreases. c. remains the same. d. varies
Helen [10]
The atomic size / radius generally increases, as when we move down the group, it means that there is an additional shell compared to the last element. For example, K has one more electron shell than Na does, so the atomic size generally increases as we move down a group in the periodic table.
4 0
3 years ago
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I need to know the measurements of this to the appropriate amount of significant figures
igor_vitrenko [27]

Answer:

it can be 63 or 63.5

Explanation:

7 0
3 years ago
A compound is 85.7% C and 14.3% H and has a molar mass of 98g/mol, what is the compounds molecular formula?
vaieri [72.5K]

Answer:

Molecular Formula => (CH₂)₇ => C₇H₁₄      

Explanation:

Empirical ratio is calculated from the sequence...

%/100wt => grams/100wt => moles => mole ratio => reduce mole ratio => Empirical Ratio

C: 85.7% => 85.7g => (85.7/12)mol = 7.14 mole

H: 14.3%  => 14.3g =>     (14.3/1)mol = 14.3 mole

C:H mole ratio => 7.14:14.3

Reduced mole ratio (divide by the smaller mole value) => (7.14/7.14):(14.3/7.14) => Empirical Ratio => 1:2 => Empirical Formula => CH₂

Molecular Wt = Whole No. Multiple of Empirical Formula Wt.

M.Wt = N(Emp Wt) => 98g = N(14g) => N = 7

∴Molecular Formula => (CH₂)₇ => C₇H₁₄

8 0
4 years ago
Read 2 more answers
When a warm soda can is placed in an ice chest full of ice, the soda can _______ heat and the ice _______ heat until they are bo
Svetach [21]
D because as the soda can starts to cool off the ice in turn begins to melt because the heat from the soda is being distributed on the ice and vice versa.
5 0
3 years ago
Avogadros number is used to determine the number of subatomic particles in an atom. True or false
Yuliya22 [10]

Answer:

False

Explanation:

The Avogadro's number is not used to determine the number of subatomic particles in an atom.

Subatomic particles of an atom are the protons, neutrons and electrons.

The protons are the positively charged particles in an atom

Neutrons do not carry any charges

Electrons carry negative charges.

 The number of protons, neutrons and electrons in an atom are experimentally determine using spectrometric techniques.

7 0
3 years ago
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