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sladkih [1.3K]
3 years ago
11

Which of the following is an element? aluminum bronze table salt brass

Chemistry
2 answers:
sveta [45]3 years ago
8 0
Aluminum is an element :)
LekaFEV [45]3 years ago
8 0

Answer:

Aluminum is an element

Explanation:

Aluminum is the most abundant metal in the earths crust with an atomic number of 13.

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Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium? 76 114 190 266
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Osmium has 114 neutrons on average
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Polyester and Nylon are examples of synthetic materials called polymers.<br> A. True<br> B. False
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NaOH+HCl-&gt;............
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Answer:

NaCl+H20

Explanation:

It is a neutralisation reaction in which NaOH is a base and HCl is an acid. On reaction it forms salt and water.

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The amino acids are combinations of
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Answer:  The correct answer is:  [B]:

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                         " organic acid and amines " .

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5 0
3 years ago
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Determine the oxidation number of each element in these compounds or ions. (a) au2(seo4)3 (gold(iii) selenate) au = se = o = (b)
Stels [109]
<span>                                                    Au</span>₂(SeO₄)₃

                                         O = -2 × 4 = -8
                                             Se  =  + 6
So,
                                            (+6 - 8) = -2

Means (SeO₄) contains -2 charge, Now multiply -2 by 3
                                             
                                             -2 ₓ 3 = -6
Means,
                             Au₂ + (-6) = 0
               
                            Au₂  = +6
Or,
                            Au  =  6 / 2

                            Au  = +3
Result:
                            Au  =  +3
                            Se  =  +6
                            O   =  -2

                                                      Ni(CN)₂


Cyanide (CN⁻) contains -1 charge,
So,
                              N  =  -3
                              C  =  +2
Then,
                                         Ni + (-1)₂  =  0

                                               Ni - 2  =  0
Or,
                                                     Ni =  +2
Result:
                            N  =  -3
                            C  =  +2
                           Ni  =  +2




6 0
4 years ago
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