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qwelly [4]
2 years ago
13

The Statue of Liberty is made of copper metal. Copper metal has the physical property of being orange in color. Over years of be

ing exposed to moist air, the surface of the statue has begun to form a green coating. Is the green coating the product of a physical or chemical change? Explain how the green layer is formed.
Chemistry
2 answers:
snow_lady [41]2 years ago
6 0

Answer:

The statue is made of a metal called copper. Over time, the copper has gone through a chemical change. This is called a chemical reaction.

Explanation:

i dont think this will help...

svetoff [14.1K]2 years ago
3 0

Answer:

Chemical.

Explanation:

Pretty sure its chemical, due to it oxidising which is a chemical reaction.

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HELP!!!!! ASAP!!!!! PLZ!!!!!
lesya692 [45]

1. Lemon juice (pH 2.2) = Acidic

2. Salt solution (pH 7) = Neutral

3. Baking soda (pH 9) = Alkaline

4. Bleach (pH 13) = Alkaline

5. Tomato juice (pH 4) = Acidic

6. Gastric juices (pH 1) = Acidic

<h3>Explanation: </h3>

The pH scale measures how acidic or alkaline a substance is. The pH scale ranges from <u>0 to 14.</u>

A pH of 7 is neutral.

Acidic substances have pH less than 7.

Alkaline(Base) substances have a pH greater than 7

Hence, the given samples can be categorized as acidic, basic or neutral based on their pH values.

1. Lemon juice (pH 2.2 < 7) = Acidic

2. Salt solution (pH 7 = 7) = Neutral

3. Baking soda (pH 9 > 7) = Alkaline

4. Bleach (pH 13 >7) = Alkaline

5. Tomato juice (pH 4 < 7) = Acidic

6. Gastric juices (pH 1 < 7) = Acidic

6 0
4 years ago
Which of the following elements have seven valance electrons in its outer shell?
lina2011 [118]

Answer:

Flourine

Explanation:

Its at the 17 group number which are where the halogens are located.

8 0
3 years ago
Read 2 more answers
a 3.50L sample of neon gas has a pressure of .950atm at 20c what would the volume be if the pressure increased to 1.50atm and th
ehidna [41]

Answer:

V_2=2.22L

Explanation:

Hello,

In this case, we use the Boyle's law which allows us to understand the volume-pressure behavior as an inversely proportional relationship:

P_1V_1=P_2V_2

Thus, solving for the final volume, once the pressure changes, we obtain:

V_2=\frac{P_1V_1}{P_2}=\frac{3.50L*0.950atm}{1.50atm}  \\\\V_2=2.22L

Best regards.

8 0
4 years ago
¿
zvonat [6]

Answer:

Es Vendeis o puedes poner vendes

Explanation:

7 0
3 years ago
The mass of each WtWt isotope is measured relative to C−12C−12 and tabulated below. Use the mass of C−12C−12 to convert each of
Nadya [2.5K]

The question is incomplete , the complete question is;

The mass of each Wt isotope is measured relative to C-12 and tabulated below. Use the mass of C-12 to convert each of the masses to amu and calculate the atomic mass of Wt.

Wt-296  =  24.6622

Answer:

The atomic mass of Wt-296 is 195.9464 amu.

Explanation:

1 amu is defined as 1 by twelfth of the carbon-12 mass.

Mass of an isotope Wt-296 = 24.6622

Mass of an isotope Wt-296 in amu = M

M\times \frac{1}{12 amu}=24.6622

M=24.6622\times 12 amu=295.9464 amu

The atomic mass of Wt-296 is 195.9464 amu.

8 0
3 years ago
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