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lozanna [386]
2 years ago
11

Please please help :(

Chemistry
1 answer:
Bad White [126]2 years ago
7 0

Answer: ¹²₅C

Explanation:

¹²₅C is incorrect. The superscript is the atomic mass. This varies between each element. The subscript is the atomic number. This doesn't change. You will see every element has the correct atomic atomic number except for Carbon. Carbon should have atomic number 6.

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5mL of Ethanol has a mass of 3.9g and 5mL of benzene has a mass 4.4g. Which liquid has a higher density?
Salsk061 [2.6K]
For Ethanol:

D = m / V

D = 3.9 g / 5 mL

D = 0.78 g/mL

For benzene:

D = 4.4 g / 5 mL

D = 0.88 g/mL

benzene has a <span>higher density.
</span>
hope this helps!
6 0
3 years ago
Does lithium or potassium have a strong nuclear pull
saveliy_v [14]

Answer:

i believe it is lithium cause its is used for batteries and potassium is in like foods right? lmk if im wrong

and potassium helps to protect from radiation

Explanation:

7 0
3 years ago
Several narrow linear bloodstain patterns are found on a wall adjacent to one where a body was found the droplets were elongated
ryzh [129]
The correct answer is letter D. A knife would most likely cause this blood spatter pattern because of the direction of the force that was inhibited on the weapon and the victim. The direction of the spatter will also depend on the body part that was hit by the weapon.
6 0
3 years ago
A slice of cheese has a mass of 21 g and a volume of 15 cm3. What is the density of the cheese in units of g/cm3 and g/mL?
photoshop1234 [79]

Explanation:

First, you have to know the definition of density. Density is mass per unit volume, or D = m/V. In this problem, you are given the mass = 37 g and you are given the volume of 21 cm3. So, the density is simply m/V = 37g/21cm3 = 1.76g/cm3. It's that simple.

5 0
3 years ago
How many molecules are there in 0.565 moles of C6H14?
Sauron [17]

Answer:

3.4 × 10^23 molecules

Explanation:

To find the number of molecules present in C6H14, we multiply the number of moles in the compound by Avagadro's number (6.02 × 10^23 atoms).

number of molecules = number of moles (mol) × 6.02 × 10^23?

Number of molecules = 0.565 × 6.02 × 10^23

3.4 × 10^23 molecules

6 0
2 years ago
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