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mr_godi [17]
3 years ago
7

if the products of a reaction are nacl and h2o what does the law of conservation of mass reveal about the reactants in the react

ion?
Chemistry
2 answers:
yawa3891 [41]3 years ago
5 0

B. The reactants will have one Na, one Cl, one O, and two H atoms.


Alika [10]3 years ago
3 0
The law of conservation of mass in chemical reactions states that the same number of atoms of each element present in the reactants are present in the products.

So, the law of conservation of mass reveals that the reactants for a reaction where the products are NaCl and H2O contain the same elements and the same number of each: Na, Cl, H and O.

For example, the reaction may have been: NaOH + HCl ---> NaCl + H2O.

In a chemical reaction, the atoms are not created nor destroyed; the same atoms of each alement are present in reactants and products.
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Physical properties of metal include shiny, ductile, opaque, malleable and good conduction of heat and electricity
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An atom of gold has a mass of 3.271 X 10-22 g. How many atoms of gold are in 5.00 g of gold? (Give your answer in scientific not
Kobotan [32]

Answer:

1.53 × 10²² atoms Ag

Explanation:

Step 1: Define conversions

3.271 × 10⁻²² g = 1 atom

Step 2: Use Dimensional Analysis

5.00 \hspace{3} g \hspace{3} Ag(\frac{1 \hspace{3} atom \hspace{3} Ag}{3.271(10)^{-22} \hspace{3} g \hspace{3} Ag} ) = 1.52858 × 10²² atoms Ag

Step 3: Simplify

We have 3 sig figs.

1.52858 × 10²² atoms Ag ≈ 1.53 × 10²² atoms Ag

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2 years ago
Read the word equation: “Propane gas plus oxygen gas produces __________.”
Dmitriy789 [7]

Answer:

Propane gas plus oxygen gas produces water and carbon dioxide.

Explanation:

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This is the balanced chemical equation: C3H8 + 5 O2 = 3 CO2 + 4 H2O

5 0
3 years ago
An ideal gas in a cylindrical container of radius r and height h is kept at constant pressure p. The bottom of the container is
Juli2301 [7.4K]

Answer:

m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}  

Explanation:

The gas ideal law is  

PV= nRT (equation 1)

Where:

P = pressure  

R = gas constant  

T = temperature  

n= moles of substance  

V = volume  

Working with equation 1 we can get  

n =\frac{PV}{RT}

The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.

\frac{m}{mw} =\frac{PV}{RT}  or  

m =\frac{P*V*mw}{R*T}   (equation 2)

The cylindrical container has a constant pressure p  

The volume is the volume of a cylinder this is

V =(pi)*r^{2}*h

Where:

r = radius  

h = height  

(pi) = number pi (3.1415)

This cylinder has a radius, r and height, h so the volume is  V =(pi)*r^{2}*h

Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:  

T =\frac{T_{1} + T_{O}}{2}  

Replacing these values in the equation 2 we get:

m =\frac{P*V*mw}{R*T}   (equation 2)

m =\frac{p*(pi)*r^{2}*h*mw}{R*\frac{T_{1} + T_{O}}{2}}    

8 0
3 years ago
What is/are the product(s) of a neutralization reaction of a carboxylic acid?
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RCOOH + OH⁻ → RCOO⁻ + H₂O
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