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MArishka [77]
3 years ago
15

4. Which of these metals is a pure element? Brass Bronze Silver Steel 5. C is the correct chemical symbol for ....... Calcium Ca

rbon Chlorine Cobalt 6. Which of these substances is an element? Air Fire Oxygen Water
Chemistry
2 answers:
pickupchik [31]3 years ago
5 0

Answer:

4) Silver (Rest are alloys)

5) Carbon (It stands for C)

6) Oxygen (Rest of them are either compounds or mixtures)

Gala2k [10]3 years ago
3 0

Answer:

4) Silver

5) Carbon

6) Oxygen

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What is silver?Hows it formed?Who created it?Make sure you include the year.At least 5 sentences for each.
mylen [45]
Silver is A precious shiny grayish-white metal, the chemical element of atomic number 47. Silver is sometimes found in nature in metallic form. It forms a sulfide mineral Ag 2 S called acanthite. Mineral forms of silver include sulfides formed with antimony called Stephanite, miargyrite and pyrargyrite. Silver is a naturally occurring element on the periodic table and can be found in natural deposits throughout the world. As such, it was discovered in 5000 BC, but not invented, by people.
3 0
3 years ago
Name Formula: Lead (II) Oxide<br> F) Pb2O<br><br> G) PbO2<br><br> H) PbO<br><br> I) Pb2O2
garik1379 [7]

Answer:

PbO is the Answer

Explanation:

4 0
3 years ago
What is the formula weight (amu) of the molecule H2O? Use atomic masses of H and O as 1.008 amu and 16.00 amu respectively. Repo
vaieri [72.5K]

Answer:

Formula weight of H₂O molecule is  18.02 amu.

Explanation:

Given data:

Formula weight of H₂O = ?

Atomic mass of H = 1.008 amu

Atomic mass of O = 16.00 amu

Solution:

Formula weight:

"It is the sum of all the atomic weight of atoms present in given formula"

Formula weight of H₂O = 2×1.008 amu + 1×16.00 amu

Formula weight of H₂O = 18.02 amu

Thus, formula weight of H₂O molecule is  18.02 amu.

6 0
3 years ago
What may be expected when K &lt; 1.0?
Romashka [77]
The reaction will generally form more reactants than products.
8 0
3 years ago
Read 2 more answers
Help help help pls pls pls​
Arlecino [84]

Explanation:

Aluminium and Chlorine.

Al and Cl2.

4 0
3 years ago
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