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Alenkinab [10]
3 years ago
11

Show a numerical formula for the dilute in the solution

Chemistry
1 answer:
Ksivusya [100]3 years ago
7 0
M1V1=M2V2 M is the molarity and V is the volume.
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What is TRUE of a mixture?
jolli1 [7]

Answer:

It retains the properties of the substances that make it up

Explanation:

Mixture show the properties of substances like a mixture of iron filling and sulphur show properties of both

8 0
3 years ago
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Calculate the value of AE for a system that loses 50 J of heat and has 150 J of work Performed on it by the surroundings.
gavmur [86]

Answer:

100 j

Explanation:

bascially u j subtract 50 from 150 because the system lost 50 j but theres 150 in its surroundings

4 0
3 years ago
Why does water (H2O) have a significantly higher boiling point than methane (CH4)? Hydrogen forms a stronger covalent bond with
alexira [117]

The attraction of inter-molecular forces between molecules is defined by a general term "Van der Waals forces". It is the weak interactions caused by momentary changes in electron density in a molecule.

Inter-molecular forces that are present between hydrogen atom which is bonded to highly electronegative atom (F, O, and N) and the lone pair electrons present in the other molecule on these electronegative atoms is known as hydrogen bonding.

The type of interactions between methane, CH_4 is Van der Waals interactions whereas in water, H_2O is hydrogen bonding.

Since, the hydrogen bond is stronger than the Van der Waals forces so, it results in higher strength between the molecule possessing hydrogen bonding. Thus, molecules possessing hydrogen bonds will have higher boiling point than the molecules which possess Van der Waals forces.

Hence, water (H_2O) have a significantly higher boiling point than methane ( CH_4 ) because water molecules are attracted to one another by hydrogen bonds.

3 0
3 years ago
if some of the Mg ribbon had not reacted because it stuck to the side of the tube and did not contact the acid, how would this h
larisa [96]

Answer:

For chemical reactions involving gases, gas volume measurements provide a convenient means of  determining stoichiometric relationships.

Explanation:

Hope this helps! ∩ω∩

6 0
3 years ago
gThe atomic radii of a divalent cation and a monovalent anion are 0.085 nm and 0.125 nm, respectively. (a) Calculate the force o
frozen [14]

Answer:

1.05 × 10⁻⁸ N

Explanation:

Using Coulomb's law

F force of attraction between them = k \frac{q^{2} }{r^{2} } = k \frac{z1z2q^{2} }{r^{2} }

K coulomb constant = 8.99 × 10⁹ N m²C⁻²

Z₁ = + 2 ( valency electron)

Z₂ = -1 ( valency electron)

r is the distance between then since they just touch one another = 0.085 nm + 0.125 nm = 0.21 nm = 0.21 × 10⁻⁹ m

q charge = 1.602 × 10⁻¹⁹ C of an electron

F = ( 2 × 1 × 8.99 × 10⁹ N m²C⁻² × (1.602 × 10⁻¹⁹ C)² / ( 0.21 × 10⁻⁹ m )² = 1046.34 × 10 ⁻¹¹ = 1.05 × 10⁻⁸ N

6 0
3 years ago
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