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Anestetic [448]
3 years ago
6

Which equation is balanced?

Chemistry
1 answer:
Alenkinab [10]3 years ago
5 0

Answer:

Zn + 2HCl → ZnCl2 + H2

Explanation:

Left

Zn=1

H=2

Cl=2

Right

Zn=1

H=2

Cl=2

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Explain, in terms of particles, why liquid<br> iodine does not conduct electricity.
drek231 [11]

Answer:

Because iodine is a liquid, it has no melting point. Iodine is not an electrical conductor because each molecule consists of two iodine atoms connected by a covalent bond that cannot be stimulated sufficiently to transmit electrical energy.

Explanation:

brainlist???

5 0
3 years ago
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How are changes between phases consistent with the law of conservation of matter
Arada [10]
<span>I'm assuming its cause the total mass is the same, changes between phases are physical... solid ice and liquid water have the same mass</span>
8 0
4 years ago
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A student calculated the volume of a solid metal bar by volumetric displacement of water. The student calculated a volume of 22.
jok3333 [9.3K]

Answer:

17.6% is the percentage error

Explanation:

The percentage error is used to determine accuracy of a measurement (That is, how closely is the measure to the real or theoretical value). The equation is:

|Measure - Real| / Real * 100

In the problem, the measure was 22.7cm³ and real value is 19.3cm³. Solving for percentage error:

|22.7cm³ - 19.3cm³| / 19.3cm³ × 100

<h3>17.6% is the percentage error</h3>
8 0
3 years ago
What is the concentration (g/L) of an albumin solution made by mixing 0.20 mL of 6.0 g/L solution with 2.84 mL BCG reagent? Assu
ozzi

Answer:

0.39 g/L is the concentration of albumin

Explanation:

We assume volumes additive

0.20 mL (volume of solute) + 2.84 ml (volume of solvent) = 3.04 mL (volume of solution)

Let's determine thee mass of solute. We first convert, the mL to L.

0.20 mL. 1 L/1000mL = 0.0002 L

We use the concentration to determine the mass → 0.0002 L . 6 g/L =

0.0012 g of albumin.

This is are the mass of solute in our solution, which has a volume of 3.04 mL. Let's convert the mL to L → 3.04mL. 1 L/1000mL = 0.00304 L

Concentration (g/L) = 0.0012 g /  0.00304 L = 0.39 g/L

7 0
3 years ago
If the amount of atoms of each type on the left and right sides of a reaction differs, What must be done to balance it
Ivahew [28]

Try the third option

4 0
3 years ago
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