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stellarik [79]
3 years ago
8

How can you describe the location of vanadium (v, atomic number 23) on the periodic table? Choose all that apply.

Chemistry
1 answer:
Orlov [11]3 years ago
5 0
Vandium is non metal but group 5 period 4 
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HALLP ME STUCKKKKK
likoan [24]

Answer:

The average height of the sunflower sprouts at the end of week 3 is  12.0

cm.

The average height of the birch sprouts at the end of week 3 is  7.2

cm.

Explanation:

they showed it on edgu

7 0
3 years ago
Read 2 more answers
A compound is made of 6.00 grams of oxygen, 7.00 grams of nitrogen, and 20.00grams of hydrogen. Find the percent composition of
xxTIMURxx [149]

The percent composition of the compound.

A O-18.18%, N-21.21%, H-60.60%

<h3>Further explanation</h3>

Given

6.00 grams of oxygen,

7.00 grams of nitrogen,

20.00 grams of hydrogen.

Required

The percent composition

Solution

Total mass :

= mass of O + mass of N + mass of H

= 6 + 7 + 20

= 33 g

% O = 6/33 x 100%= 18.18%

% N = 7/33 x 100%=21.21%

% H = 20/33 x 100% = 60.6 %

6 0
2 years ago
Gold has always been a highly prized metal, widely used from the beginning of history as a store of value. It doesn\'t rust like
Alecsey [184]

Answer:

1Au(s) + 3HNO₃(aq) + 4HCl(aq) → 1HAuCl₄(aq) + 3NO₂(g) + 3H₂O(l)

The function of HCl is oxidize the gold.

Explanation:

It is possible to balance the reaction seeing each compound as a variable and take an equation for each atom, thus:

Au(s) + HNO₃(aq) + HCl(aq) → HAuCl₄(aq) + NO₂(g) + H₂O(l)

a       +       b         +      c      =        d            +    e       +    f

Au: a = d <em>(1)</em>

H: b + c = d + 2f <em>(2)</em>

N: b = e <em>(3)</em>

O: 3b = 2e + f <em>(4)</em>

Cl = c = 4d <em>(5)</em>

Assuming <em><u>a = 1</u></em>:

<em><u>1 = d</u></em> <em>(1)</em>

<u><em>c = 4</em></u> <em>(5)</em>

b + 3 = 2f <em>(2)</em>

3b = 2e + f <em>(4)</em>

As b = e:

b = f <em>(4)</em>

<em><u>f = 3</u></em>; <em><u>b = 3</u></em>; <em><u>e = 3</u></em>

Thus, balanced reaction is:

1Au(s) + 3HNO₃(aq) + 4HCl(aq) → 1HAuCl₄(aq) + 3NO₂(g) + 3H₂O(l)

<em>The function of HCl is oxidize the gold</em> that before reaction is Au⁰ and afte ris Au⁺³

I hope it helps!

4 0
2 years ago
Why don’t the trees spontaneously catch fire and burn all the time? Why don’t the fires stop immediately as soon as they start?
algol13

Answer:

Both of these phenomena is due to the ignition temperature.

Explanation:

Trees don't spontaneously catch fire because there is a temperature above which materials combust. This is called the "ignition temperature." This temperature must be reached before the trees will ignite, and the external condition does not always harbor such high temperature.

Fires don't stop immediately because, while some parts of the flame has cooled down sufficiently below the ignition temperature, other parts of the flame have not. It takes time for all the part of the flame to cool down below ignition temperature for the burning to stop.

7 0
3 years ago
Calculate the oxidation number of Cao ​
wlad13 [49]

Answer:+2 -2

Explanation:

5 0
2 years ago
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