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Readme [11.4K]
3 years ago
10

Which statement concerning elements is true

Chemistry
1 answer:
Bezzdna [24]3 years ago
4 0
Elements are held on a periodic table
Elememts are made up of protons and nuetrons in the nueclues.
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A diver has 3,400 J of gravitational potential energy after climbing
Zanzabum

Answer:

57.8kg

Explanation:

Potential energy is given by:

U =mgh

Where U is potential energy, m is mass, g is acceleration due to gravity, and h is height. Using this equation:

3400=m(9.8)(6)\\3400=58.8m\\m=57.8kg

3 0
3 years ago
A molecule has the empirical formula C4H6O. If its molecular weight is determined to be about 212 g/mol, what is the most likely
krok68 [10]

Answer:

The molecular formula is C12H18O3

Explanation:

Step 1: Data given

The empirical formula is C4H6O

Molecular weight is 212 g/mol

atomic mass of C = 12 g/mol

atomic mass of H = 1 g/mol

atomic mass of O = 16 g/mol

Step 2: Calculate the molar mass of the empirical formula

Molar mass = 4* 12 + 6*1 +16

Molar mass = 70 g/mol

Step 3: Calculate the molecular formula

We have to multiply the empirical formula by n

n = the molecular weight of the empirical formula / the molecular weight of the molecular formula

n = 70 /212 ≈ 3

We have to multiply the empirical formula by 3

3*(C4H6O- = C12H18O3

The molecular formula is C12H18O3

3 0
3 years ago
Read 2 more answers
What volume of nitrogen gas is equal too 3.42x10^22 molecules of this substance
Bas_tet [7]

if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)

8 0
2 years ago
For her school Science Fair, Alyssa designs an experiment to learn more about erosion. Her experimental set up is shown below. W
shutvik [7]

Answer:                                                                                                                                

if I am going to answer I need the set up

Explanation:

please show the set up and I will answer the question

8 0
2 years ago
I need all the answers 16-25
vladimir1956 [14]
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8 0
3 years ago
Read 2 more answers
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