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Pavel [41]
3 years ago
5

Which best describes an element

Chemistry
1 answer:
-Dominant- [34]3 years ago
8 0

Answer:

a pure substance

Explanation:

cant be broken down into any more  simpler substances

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Answer:

i think D

Explanation:

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3 years ago
A student mixed two chemicals to allow them to
Westkost [7]

Answer:

B .it is an exothermic reaction

Explanation:

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give a general description of the location of metals , non metals and metalloids on the periodic table
zheka24 [161]

Answer:

Metals at the top

nonmetals at the bottom

metalloids in the middle

Don't quote me, i could be wrong. i think this is the correct order.

Explanation:

7 0
4 years ago
What is the oxidation state of Hydrogen in H20<br><br> +2<br> +1<br> -2<br> -1
xeze [42]
<h3>What is the oxidation number of oxygen in H2O?</h3>

Oxygen almost always has an oxidation number of -2, except in peroxides (H 2 O 2) where it is -1 and in compounds with fluorine (OF 2) where it is +2. Hydrogen has an oxidation number of +1 when combined with non-metals, but it has an oxidation number of -1 when combined with metals.

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6 0
2 years ago
Ethanoic acid and 1-butanol can react to produce water and a compound classified as an 1) aldehyde 2) amine 3) ester 4) halide
kvv77 [185]

Answer:

3) ester

Explanation:

Esterification is the process in which alkanol and alkanoic acids reacts in the presence of a catalyst and heat. The product is usually an ester(alkanoate) and water.

For the reaction between ethanoic acid and 1-butanol, the product is butylethanoate and water as shown below:

               CH₃COOH + C₄H₈OH → CH₃COOC₄H₈ + H₂O

4 0
4 years ago
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