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4 years ago

Why is the law of reciprocal proportion called law of equivalent proportion

1 answer:

5 0

“This states that when we have two different compounds that share an element, they will combine in the same ratio (or a simple multiple of that ratio) to each other when the two different elements are combined.”

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Chemical reactions can be described in terms of what quantities

aivan3 [116]

When a chemical equation is balanced, as in, molecules, moles, atoms, volume and mass, it occurred in different quantities. Atoms and mass are conserved in every chemical reaction. An insufficient amount of any of the reactants will limit the amount of product that forms.

4 0

4 years ago

Which shows the correct relationship between the molecular formula and the empirical formula for C2H10N2

vesna_86 [32]

The correct answer is molecular formula = 2 x empirical formula

The given compound C2H10N2 is the molecular formula because the ratios of the elements are not reduced into lowest terms (empirical formula). To get the empirical formula, the ratios must be reduced to the smallest possible integral ratio which gives CH5N. As a result, the ratio between both formulas is 2.

3 0

4 years ago

A certain block is floating in water with 77% of itself submerged. It has a length of 4.3 cm, a width of 5.9 cm, and a height of

dmitriy555 [2]

Answer:

f. 0.0537 kg

Explanation:

To solve this, we use the formula for force of buoyancy (Fb) = Vs × D × g

Where; Fb= Force of buoyancy

Vs= Volume of submerged

block

D= Density of water that block

submerges in

g= acceleration due to gravity

In this question, volume of block can be calculated using L×B×H

= 4.3cm × 5.9cm × 2.75cm = 69.7675cm^3

If 77% of the block is submerged in water, then 77/100 × 69.7675cm^3

= 53.72cm^3 is the Volume of submerged block

Density of water is known as 1000kg/m^3 while the gravitational force is 10m/s^2

We need to convert the Vs (volume of submerged block) to m^3 by dividing by 1,000,000

Hence, Vs = 53.72/1000000

Vs= 0.00005372m^3

Using the formula; (Fb) = Vs × D × g

Fb = 0.00005372m^3 × 1000kg/m^3 × 10m/s^2

Fb = 0.5372kg/m/s^2

Therefore, the force of buoyancy of the object on water is 0.5372kg/m/s^2

Recall that; Mass (m) = Volume (V) × Density (D)

Force of buoyancy (Fb) = Vs×D = mass (m) × acceleration due to gravity (g)

i.e. mass = Fb/g

= Mass of the block = 0.5372/10

Mass = 0.05372kg

Therefore, the mass of the block in kg is 0.05372kg

7 0

3 years ago

Cold packs are used to treat minor injuries. Some cold packs contain NH4NO3(s) and a small packet of water at room temperature b

Anastasy [175]

These types of reactions are called endothermic reactions. This is when the system absorbs the heat from the surrounding. In this case, the system is the chemical reaction and the environment is the direct vicinity of the chemical reaction. You notice that the pack becomes cold because heat from the surrounding is being absorb.

The bonds involved in this substance includes ionic bonding and polar covalent.

6 0

4 years ago

Water has a density of 1.0g/ml * Physical Property Physical Change Chemical Property Chemical Change

Daniel [21]

The density of water is a physical property.

You can measure it without changing the water to a different substance.

It is not a physical change because the water does not change to ice or steam.

You can observe a chemical property or a chemical change only if the water changes to a different substance.

5 0

3 years ago

Why is the law of reciprocal proportion called law of equivalent proportion​

Why is the law of reciprocal proportion called law of equivalent proportion