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marshall27 [118]
3 years ago
5

An 18.5 g sample of tin (molar mass = 118.7) combines with

Chemistry
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:

Option (B) SnS2

Explanation:

Data obtained from the question include:

Mass of Sn = 18.5 g

Mass of S = 10 g

The empirical formula of the compound can be obtained by doing the following:

Step 1:

Divide each element by their molar mass

Sn = 18.5/ 118.7 = 0.156

S = 10/ 32.07 = 0.312

Step 2:

Divide each by the smallest number

Sn = 0.156/0.156 = 1

S = 0.312/0.156 = 2

The empirical formula is SnS2

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Explanation:

5 trial, had an average destiny of 7.40. g/cm

4 0
3 years ago
To see a RED object, all the light is absorbed except the Red and that is what we see as the color True False
Dafna11 [192]

Answer: True

Explanation:

Let's begin by explaining that the vision phenomenon depends on three elements: the observer, the object and the light source.

In addition, objects have pigments, which generally absorb more light than they reflect (they absorb certain wavelengths and reflect others). Therefore, the color that a given object seems to have depends on which parts of the visible electromagnetic spectrum are reflected and which parts are absorbed.  

In this sense, the colours we see are in fact the wavelengths that are reflected or transmitted from the object.  For example, a red object has that color because when it is illuminated whith white light, the pigments on this object abrsorb all the the wavelengths of the visible electromagnetic spectrum, except red. That is why red light is the only light that is reflected from the mentioned object.

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3 years ago
In a chemical reaction how does the mass of the reactants compare with the mass of the products?
Juli2301 [7.4K]

Answer:

The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts.

Explanation:

In this question, they ask about chemical reactions and the comparison of the mass of reactants and products. Firstly, it is necessary to introduce the mass conservation principle.

Mass conservation principle mentions that in a chemical reaction, the total mass of reactants is equal to the total mass of products (if the reaction is fully developed). It means mass is not created or destroyed, only transforms from reactants to products.

For example, the mass of sodium plus the mass of chlorine that reactswith the sodium equals the mass of the product sodium chloride.Because atoms are only rearranged in a chemical reaction, there mustbe the same number of sodium atoms and chlorine atoms in both thereactants and products.

Finally, we can conclude that The mass of the reactants compared with the mass of the products should be the same if the reactants are in stoichiometric amounts. 

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