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borishaifa [10]
3 years ago
13

Who discovered copper

Chemistry
2 answers:
Komok [63]3 years ago
7 0

Explanation:

The exact person is unkown cooper has been around for ages since 9000 BC in the Middle East are the earliest discoveries

sesenic [268]3 years ago
5 0

Although various copper tools and decorative items dating back as early as 9000 BCE have been discovered, archaeological evidence suggests that it was the early Mesopotamians who, around 5000 to 6000 years ago, were the first to fully harness the ability to extract and work with copper

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Which of the following hypotheses cannot be tested using the scientific method?
lara31 [8.8K]

Answer:

<h2>The bombing of Hiroshima ended World War II.</h2>

Explanation:

[The scientific method includes these steps:

Observation

Hypothesis

Experimentation

Data Analysis

Conclusion]

The first two Hypothesis can be tested with the scientific method, you cannot go back in time and observe or experiment with the bombing of Hiroshima to deduce whether or not it ended World War II.

8 0
3 years ago
I need help answering this extra credit assignment but I could not answer the question could you please help.
Firdavs [7]

Answer:

it would take longer to boil on top of a mountain because the water is not as hat

7 0
1 year ago
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Find the volume of 200g of benzene, if the density of benzene is 0.88 g/mL.
Lina20 [59]

Answer:

<h2>227.27 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question we have

volume =  \frac{200}{0.88}  \\  = 227.2727...

We have the final answer as

<h3>227.27 mL</h3>

Hope this helps you

7 0
3 years ago
Which cell organelle most directly affects the rate of active transport? why?
Natalka [10]
The "mitochondria" produces ATP which is essential for active transport so it determines the rate of active transport
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6 0
3 years ago
Why water is able to stick to the side of a glass
Snezhnost [94]

Answer:

Water uses adhesive forces that allow it to stick to certain surfaces such as glass.

Explanation:

When the angle between vertical direction and the glass wall is small, surface tension is stronger and the component of gravity perpendicular to the glass wall is small. The result of this causes water to stick to the side of a glass.

Hope this helps!

3 0
3 years ago
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