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bearhunter [10]
3 years ago
15

10) Give two example of where you would find elements in our daily lives.

Chemistry
1 answer:
Phoenix [80]3 years ago
6 0
Carbon is found in oil and gas.
Aluminum a light metal used in making pots and pans.
Bromine is used in photography.
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Which of the following is a correct formula unit of an ionic compound?
pogonyaev

Answer:

<h3>Ca(OH)2</h3><h3>Ca(OH)2</h3>

Explanation:

4 0
3 years ago
Which of the following statements best describes the Aufbau principle?
dsp73
The answer is the choice A
7 0
4 years ago
A 13 Ohm resistor, R, is connected to a battery with unknown voltage, V, as shown below. The total current, I, flowing through t
wlad13 [49]

Answer:

16.12 V

Explanation:

Ohms law explains or portrays the relationship between the voltage (V), current (I) and resistance (R). This is represented using the equation as follows:

V = IR

Where;

V = voltage (Volts)

I = current (amperes)

R = resistance (ohms)

According to the information provided in the question, resistance (R) = 13 Ohm, current (I) = 1.24 Amperes, V = ?

V = 13 × 1.24

V = 16.12 V

3 0
3 years ago
When water is mixed with copper sulfate the water turned a blue colour. Is this a physical or chemical property. Explain your an
Alex17521 [72]

Answer:

Physical

Explanation:

No new properties were added, a blue liquid and a clear liquid making a blue liquid is just a mixture because they have not chemically combined.

5 0
3 years ago
A closed container holds 1.33 moles of gas A 2.14 moles of gas B 1.12 moles of gas C If the total pressure within the container
ludmilkaskok [199]

Answer:

2.48 atm

Explanation:

The partial pressure of the gas is equal to the product of the mole fraction and total pressure.

So,  

P_{gas}=X_{gas}\times P

Given that:-

Moles of A = 1.33 moles

Moles of B = 2.14 moles

Moles of C = 1.12 moles

Mole fraction of B can be calculated as:-

X_B=\frac{n_B}{n_A+n_B+n_C}=\frac{2.14}{1.33+2.14+1.12}=0.47

Total pressure = 5.28 atm

Thus, partial pressure of gas B = 0.47 x 5.28 atm = 2.48 atm

8 0
3 years ago
Read 2 more answers
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