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Dima020 [189]
3 years ago
10

The first part of a balanced chemical equation for a chemical reaction is shown below:

Chemistry
1 answer:
Bond [772]3 years ago
8 0

Answer:

The answer to your question is 6

Explanation:

Data

              Cu  +  2AgNO₃   ⇒  

To find the answer, count the number of each element in the reactants

Element                Quantity

Copper                        1

Silver                           2

Nitrogen                      1

Oxygen                        6

Then, in the products, there must be 6 oxygens so in the products there must be 6 oxygens so the reaction is balanced.              

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Determine two complex numbers, (a+bi) and (c+di), where a and d are irrational numbers and b and c are rational number
Dafna11 [192]

Answer:

The two complex numbers are \sqrt2 + 5i \text{ and } 6 + \sqrt5i

Explanation:

We have to form two complex numbers of the form

a + ib\\c + id

such that and d are irrational numbers and b and c are rational numbers.

We know that \sqrt2, \sqrt3 are irrational numbers.

5 and 6 are rational numbers.

We put

a = \sqrt2\\b = 5\\c = 6\\d = \sqrt5\\a+ib = \sqrt2 + 5i\\c + id = 6 + \sqrt5i

Thus, the two complex numbers are: \sqrt2 + 5i \text{ and } 6 + \sqrt5i

7 0
3 years ago
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Is roasting a marshmallow a Chemical or Physical reaction?
svetoff [14.1K]
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Zinc phosphate is used as a dental cement. A 50.00-mg sample is broken down into its constituent elements and gives 16.58 mg oxy
cricket20 [7]

Answer:

Zn3P2O8

Explanation:

In this particular question, it is necessary to convert the respective masses to percentages. We convert to percentages by placing each mass over the total mass and multiplying by 100%. Since the total is 50mg, conversion to percentage can be done by multiplying the masses by 2 as 100/50 is 2

For Oxygen = 16.58 * 2 = 33.16%

For phosphorus = 8.02 * 2 = 16.04%

For zinc = 25.40 * 2 = 50.80%

We then proceed to divide these percentages by their respective atomic masses. The atomic mass of oxygen, phosphorus and zinc are 16, 31 and 65 respectively.

O = 33.16/16 = 2.0725

P = 16.04/31 = 0.5174

Zn = 50.80/65 = 0.7815

Now, we divide by the smallest value which is that of the phosphorus

O = 2.0725/0.5174 = 4

P = 0.5174/0.5174 = 1

Zn= 0.7815/0.5174 = 1.5

Now, we need to multiply through by 2. This yields: O = 8, P = 2 and Zn = 3

The empirical formula is thus: Zn3P2O8

7 0
3 years ago
The boiling point of water is 1000C.
sergejj [24]

Answer:

a) The heat which we supply to water during boiling is used to overcome these forces of attraction between the particles so that they become totally free and change into a gas. This latent heat does not increase the kinetic energy of water particles and hence no rise in temperature takes place during the boiling of water.

b) Steam produces more severe burns than boiling water even though both are at 100oC because steam contains more heat, in the form of latent heat, than boiling water.

Explanation:

i hope this will help u

7 0
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How do I convert Kilometers to miles? And Kg to pounds?
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