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mina [271]
2 years ago
9

Which is a property of matter that you CANNOT observe just by looking at an object?

Chemistry
2 answers:
Sedaia [141]2 years ago
7 0

Answer:b

Explanation:

Scorpion4ik [409]2 years ago
5 0

Answer: temperature

Explanation:

If you see a hot red ball then you know the color, red, and the shape, a ball, but you don’t know it’s hot.

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You have 4.72x10^25 atoms of a substance with MW of 136.94 g/mol How many moles do you have
slega [8]

Number of moles = 78.41

<h3>Further explanation  </h3>

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

4.72 x 10²⁵ atoms of a substance, then moles :

\tt n=\dfrac{N}{No}\\\\n=\dfrac{4.72\times 10^{25}}{6.02\times 10^{23}}\\\\n=78.41

4 0
2 years ago
Which shape is being shown by the model?
Karo-lina-s [1.5K]
Hm I don’t know if this has to do with color but I would think a molecule
5 0
3 years ago
Bismuth has a density of 9.80 g/cm^3. What is the mass of 3.02 cm^3 bismuth?
matrenka [14]

IdkAnswer:

Explanation: idk am sorry

7 0
3 years ago
Read 2 more answers
How many moles are in 3.27 x 1027 atoms of carbon (C)? ​
rusak2 [61]

Answer:

Try:

1. How many atoms are in 6.5 moles of zinc?

6.5 moles 6.02 x 1023 atoms = 3.9 x 1024 atoms

1 mole

2. How many moles of argon are in a sample containing 2.4 x 1024 atoms of argon?

2.4 x 1024 atoms of argon 1 mole = 4.0 mol

6.02 x 1023 atoms

3. How many moles are in 2.5g of lithium?

2.5 grams Li 1 mole = 0.36 mol

6.9 g

4. Find the mass of 4.8moles of iron.

4.8 moles 55.8 g = 267.84 g = 270g

1 mole

Explanation:

i think i did it about right..?? :-(

5 0
3 years ago
select which of the following correctly represents the BALANCED chemical reaction for the production of HCL gas from its element
bagirrra123 [75]

Answer:

Choices 2 and 4

Explanation:

HCL is formed witthe the elements Hydrogen and Chlorine. Whatever is on the left side of the equation must match up with the right side of the equation.

2. H + Cl --> HCl (we have one hydrogen and one chlorine)

4. 2HCl --> H2 + Cl2 (since the two is distributed to both the H and the Cl, H has 2 and Cl has two on the left side AND on the right side of the equation)

3 0
2 years ago
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