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LekaFEV [45]
4 years ago
15

Why can some metals be extracted from compounds by heating with carbon and why can some not

Chemistry
1 answer:
pentagon [3]4 years ago
8 0

Answer:

Some metals can be extracted from compounds by heating with carbon atom because they are less reactive than carbon and some metals cannot be extracted because they are more reactive than carbon atom.

Explanation: If the metal is less reactive than carbon atom so the carbon atoms make bond with oxide or other atom present with metal and the metal is free from that oxide or that element. But if the reactivity of metal is higher than carbon is unable to remove the oxide or element.

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Cual es el carbono de valencia libre
Ilia_Sergeevich [38]

Answer:

Explanation:

1) Se escoge la cadena con el mayor número de átomos de carbono. 2) Cuando hay dos cadenas posibles con el mismo número de átomos de carbono, se elige la que contenga el mayor número de triples ligaduras posibles. ... El átomo de carbono con la triple valencia libre se numera como 1.

8 0
3 years ago
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Find the volume of a rectangular prism that is<br> 25 cm by 10 cm by 15 cm.<br> height<br> length
Stolb23 [73]

Answer:

3750 cm.

Explanation:

You multiply the three side measurements to find the volume.

25cm·10cm·15cm

375cm·10cm

3750 cm.

<em><u>Hope this helps!</u></em>

4 0
3 years ago
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A sample obtained from the national bureau of standards had a calibrated weight of 20.000. When it was used tocalibrate a studen
melisa1 [442]

Answer : The measurements are both precise and accurate.

Explanation :

Accuracy : It is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 50 kg and one person weighed 48 kg and another person weighed 55 kg. Then, the weight measured by first person is more accurate.

Precision : It is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 1.8 kg each time. Then the measurement is said to be precise.

Level of precision is determined by the maximum number of decimal places.

When the level of precision is very very less, the measurement can be considered as most precise and most accurate.

As we are given the standard value of the sample is 20.000 and the values measured by the balance are, 19.995, 20.005, 20.001.

Since these three values are in the range of +/- 0.005 from one another. So, we can say that the measurements are both precise and accurate.

Hence, the measurements are both precise and accurate.

3 0
4 years ago
H₂SO₄ is considered to be
uranmaximum [27]

Answer:

sulfuric acid

Explanation:

a strong acid that soluble in water.

6 0
3 years ago
How do i confess to my crush of the same gender? Pls hurry
harkovskaia [24]

Answer:

BE DIRECT, DON'T BE AFRAID. THE FACT THAT THEY ARE OF THE SAME SEX IS NOT RELEVANT.

SPEAK FROM THE HEART, EXPRESS YOUR FEELINGS HONESTLY.... AND IF HE REJECTS YOU, SMILE AND THINK "AT LEAST I TRIED, SOMEONE BETTER WILL EXIST" AND DON'T LET YOURSELF BE PUT DOWN UWU

Explanation:

(SORRY IF IT'S NOT VERY UNDERSTANDABLE, I SPEAK SPANISH AND I'M USING TRANSLATOR ._.)

5 0
3 years ago
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