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PSYCHO15rus [73]
3 years ago
10

Which element has chemical properties most similar to carbon (C)?

Chemistry
2 answers:
tankabanditka [31]3 years ago
6 0
The answer is B the silicon
melamori03 [73]3 years ago
4 0

Answer:

b

Explanation:

Silicon has the chemical properties that are most similar to those of carbon

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Heat is energy, and that energy would eventually cause the object to undergo a phase change.
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List 2 things that about Velocity and Speed that are Different and two that are the same.
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Speed and velocity both:
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8 0
3 years ago
Calculate the number of moles of caco3 (calcium carbonate, or limestone) in a 20.0g sample of this substance
Brrunno [24]
First calculate for the molar mass of the given formula unit, CaCO₃. This can be done by adding up the product when the number of atom is multiplied to its individual molar mass as shown below.

     molar mass of CaCO₃ = (1 mol Ca)(40 g Ca/mol Ca) + (1 mol C)(12 g of C/1 mol of C) + (3 mols of O)(16 g O/1 mol O) = 100 g/mol of CaCO₃

Then, divide the given amount of substance by the calculated molar mass.
            number of moles = (20 g)(1 mol of CaCO₃/100 g)
             number of moles = 0.2 moles of CaCO₃

<em>Answer: 0.2 moles</em>
6 0
3 years ago
Plz help! I will give five star thanks and I will give brainliest
Harman [31]

Answer:

Conduction

Explanation:

Conduction is the transfer of heat energy from one substance to another or within a substance.

5 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
3 years ago
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