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spayn [35]
2 years ago
8

. Which piece of safety equipment is least likely to be at Jerome's lab station? A. Goggles B. A fire extinguisherC. Heat-proof

gloves D. A lab coat
Chemistry
1 answer:
charle [14.2K]2 years ago
5 0
D a lab coat
hsjjdjjfdh

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How much do 3.01 x 1023 atoms of Helium weigh?
liraira [26]

Answer:

4.0 grams

Explanation:

I hope that helped!!

4 0
2 years ago
Calculate the volume of a sample of iron that has a density of 6.8 g/mL and a mass of 6780 mg.
Veronika [31]

Answer:

m= 6780mg = 6.78g = 6.8g

d= 6.8g/ml

V= m/d

V= 1ml

8 0
3 years ago
What volume does 14 mol of gas occupy at STP? Round to the nearest hundredth.
Anna007 [38]

Answer:

The volume is 310 L

Explanation:

We use the ideal gas formula, with the constant R = 0.082 l atm / K mol. The STP conditions are 1 atm pressure and 273 K temperature. Solve for the formula, V (volume):

PV= nRT ---> V= (nRT)/P

V=( 14 mol x 0,082 l atm /K mol x 273 K)/ 1 atm

<em>V= 313,404 L</em>

4 0
2 years ago
Match the atoms to their correct electron configuration. <br> (Answer choices in photo)
zysi [14]

Answer:

The answer to your questions are given below

Explanation:

The answer to the questions given above can simply be obtained by writing the electronic configuration of each atom.

The electronic configuration of each atoms can be written as follow:

Fluorine, F (9) => 1s² 2s²2p⁵

Sodium, Na (11) => [Ne] 3s¹

Helium, He (2) => 1s²

Calcium, Ca (20) => [Ar] s²

Nitrogen, N (7) => 1s² 2s²2p³

Sulphur, S (16) => [Ne] 3s²3p⁴

6 0
3 years ago
14. What is the oxidation number of oxygen in HSO4 -
Margarita [4]

Answer:

2

Explanation:

i did this

6 0
2 years ago
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