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Arada [10]
3 years ago
15

The diagram shows the structure of an animal cell.

Chemistry
2 answers:
Vera_Pavlovna [14]3 years ago
8 0

Answer:

1

Explanation:

The cell membrane is the protective, semi-permeable membrane surrounding a cell and its contents.

kifflom [539]3 years ago
6 0

Answer:

I think 19 I think I don't know

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Describe the function of the PNS and the CNS
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3 0
2 years ago
Winter is coming and it's time to make sure you have the right amount of antifreeze
ololo11 [35]

The molality of the solution = 17.93 m

<h3>Further explanation</h3>

Given

6.00 L water with 6.00 L of  ethylene glycol(ρ=1.1132 g/cm³= 1.1132 kg/L)

Required

The molality

Solution

molality = mol of solute/ 1 kg solvent

mol of solute = mol of ethylene glycol

  • mass of ethylene glycol :

= volume x density

= 6 L x 1.1132 kg/L

= 6.6792 kg

= 6679.2 g

  • mol of ethylene glycol (MW=62.07 g/mol)

=mass : MW

=6679.2 : 62.07

=107.608

  • mass of water

6 L water = 6 kg water(ρ= 1 kg/L)

  • molality

\tt =\dfrac{107.608}{6}=17.93~m

5 0
2 years ago
Pls help me !!!! Is for chemistry
Sphinxa [80]

Answer:

Explanation:

1) Molarity of the solution is (0.50/0.75)x1 = 0.66666 Mol/L

2) Molar mass of NaCl is 23+35 = 58g

Molarity = (0.5/58)/0.075 = 0.115 Mol/L

3) Molar mass of Li_{2}SO_{4} = 7x2 + 32 + 16x2 = 78g

Molarity = (734/78)/0.875 = 10.754 Mol/L

5) Molar mass of   Pb(C_{2}H_{3}O_{2})_{4}

= 207.2 + ((12x2) + (1x3) + (16x2))x4

= 207.2 + (24+3+32)x4 = 443.2g

Molarity = (0.0672/443.2)/0.1335 = 0.001135 Mol/L

6) Both are the same.

Solution 1 Molarity = 1.0/1.0 = 1 Mol/L

Solution 2 Molarity = 1.0/1.0 = 1 Mol/L

Molarities of the solutions are the same.

7 0
3 years ago
Which alkene will most likely have the highest boiling point
Inessa [10]

Answer:

B. hexane

Explanation:

Im not sure I just goggled it

6 0
2 years ago
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Is magnesium a metal or a nonmetal? How many valence electrons does a magnesium atom have?
MatroZZZ [7]
Magnesium is classified as a metal. Magnesium has two valence electrons
6 0
3 years ago
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