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horsena [70]
4 years ago
15

I need an answer ASAP!!

Chemistry
1 answer:
dimaraw [331]4 years ago
8 0

Answer:

C:

Explanation:

Current flows from negative to positive.So the electrons will be moving left.

when a current is applied, positive charged copper ions (called cations) leave the anode (positive electrode) and move to the cathode (negative electrode).

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Important parts of biological membranes
Dvinal [7]

Answer:

A biological membrane can be described as a membrane which encloses a cell. It separates a cell from the outer environment.

The main components of a biological membrane include proteins, lipids and carbohydrates. The carbohydrates either attach to lipids forming glycolipids or they attach to proteins forming glycoproteins.

The structure of a biological membrane constitutes of phosphate heads and tails which are made of fatty acids. The membrane contains a phospholipid bilayer.

3 0
4 years ago
In the periodic table of elements, which of the following electron configurations would be the element following oxygen?
anygoal [31]

The answer would be C, because it is the follower up of oxygen.

7 0
4 years ago
Which of the following is true for all chemical reactions
motikmotik
Conservation of mass. The mass that reacts must equal the mass of the products.
6 0
4 years ago
Determine the number of moles in 254 molecules of bromine.
Natali5045456 [20]

Answer:

4.22 × 10 ⁻²² mol

Explanation:

Given data:

Number of molecules of bromine = 254 molecules

Number of moles = ?

Solution:

1 mole = 6.02 × 10 ²³ molecules

254 molecules × 1  mol / 6.02 × 10 ²³ molecules

42.2 × 10 ⁻²³ mol

4.22 × 10 ⁻²² mol

3 0
3 years ago
What is the expected freezing point of a 0.50 m solution of li2so4 in water? Kf for water is 1.86 ∘c/m.
In-s [12.5K]

Answer: -2.79°C

Explanation:

Supposing complete ionization:

Li2SO4 → 2 Li{+} + SO4{2-}  [three ions]

(0.50 m Li2SO4) x 3 = 1.50 m ions  

(1.50 m) x (1.86 °C/m) = 2.79°C change

0°C - 2.79°C = -2.79°C

4 0
4 years ago
Read 2 more answers
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