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mr_godi [17]
3 years ago
15

How do you balance a chemical equation

Chemistry
1 answer:
Dominik [7]3 years ago
6 0
There should be mass balance and the charge balance between the reactants and the products

Mass balance : total no of individual atoms of each type should be balanced before and after the reaction

Charge balance : Overall charge of the reactants should be balanced with the overall charge of the products

You can balance,

1)by just looking at it

2)by Algebraic method given above or

3)by the redox method

You need to know how to get the oxidation numbers in order to use the oxidation method

You might be interested in
Hypothermic body temperature can range from 28.7 °C to 35.5 °C. What is this range in degrees Fahrenheit?
Amanda [17]
Solution:

To convert Celsius to Fahrenheit, the formula to be used is (C * 9/5) + 32

So in our given, 28.7 degrees Celsius:

Farenheit = (28.7 * 9/5) + 32
= 51.66 + 32
= 83.66 degrees Fahrenheit

Next, 35.5 degrees Celsius:
Farenheit = (35.5 * 9/5) + 32
= 63.9 + 32
= 95.9 degrees Fahrenheit

So in Fahrenheit, the range would be 83.66 – 95.9 degrees Fahrenheit.
5 0
3 years ago
Please help me with these! Mark brainliest
bearhunter [10]

Answer:

1. Alkalinity

2. True

3. Red

Explanation:

1. 8-14, which are the bases, are alkaline

2. Salt lowers the melting/freezing point of water

3. Blue --> Red is Acid

6 0
3 years ago
How does changing the energy in a substance to change its state of matter
STALIN [3.7K]

Answer:

The transfer of energy to a substance or from a substance can change the state of matter of the substance. For example, when water in the liquid state is heated the molecules of water start to move vigorously and hence the liquid state of water gets converted into the gaseous state in the form of steam. When liquid water is cooled down the molecules compress and form ice changing the liquid state of water into the solid-state.

6 0
3 years ago
A block of gold is illuminated with UV light at a wavelength of 1.6x10-11 meters. What is the frequency of this light ?
irga5000 [103]

Answer:

f = 1.87 × 10¹⁹ s⁻¹

Explanation:

Given data:

Wavelength of light = 1.6 ×10⁻¹¹ m

Frequency of light = ?

Solution:

Formula:

speed of light = wavelength × frequency

Frequency = speed of light / wavelength

speed of light = 3× 10⁸ m/s

Now we will put the values in formula:

Frequency = speed of light / wavelength

f =  3× 10⁸ m/s / 1.6 ×10⁻¹¹ m

f = 1.87 × 10¹⁹ s⁻¹

4 0
3 years ago
A metal sample weighing 43.5 g and at a temperature of 100.0 °c was placed in 39.9 g of water in a calorimeter at 25.1 °c. at eq
shtirl [24]
The initial state of the system is comprised of
(a) A metal sample
    m₁ = 43.5 g, mass
    T₁ = 100°C, temperature
    c₁ (unknown) specific heat, J/(g-C)

(b)  Water
   m₂ = 39.9 g, mass
   T₂ = 25.1°C, temperature
   c₂ = 4.184 J/(g-C), specific heat

The final state of the system is
 M = m₁ + m₂, total mass
 T = 33.5°C, equilibrium temperature

Work in SI units. Note that changes in °C are equal to changes in °K.
Equate change in total thermal energy to zero because the energy is conserved.
m₁c₁(T-T₁) + m₂c₂(T-T₂) = 0
(43.5)*(c₁)(33.5 - 100) + (39.9)*(4.184)*(33.5 - 25.1) = 0
-2892.8c₁ + 1402.3 = 0
c₁ = 1402.3/2892.8 
    = 0.4848 J/(g-C)

Answer: The specific heat capacity of the metal is 0.485 J/(g-°C)

7 0
3 years ago
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