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Kitty [74]
3 years ago
14

H2+O=???????????????????

Chemistry
1 answer:
Luden [163]3 years ago
6 0

Answer:

H₂O

Explanation:

Two molecules of Hydrogen and one molecules of Oxygen, when mixed, create H₂O, or water. There is no scientific name for H₂O due to it's common name. It is just refereed to as "water" or H₂O.

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Which of the following electron configurations represents an element that is MOST LIKELY to bond in a 1:1 ratio with calcium, Ca
fiasKO [112]

There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. The correct option is option C.

<h3>What is chemical Compound?</h3>

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

During formation of a compound calcium act as cation as Ca²⁺ so, if any element has to react with this cation in a 1:1 ratio, must have -2 charge over it . Option C represents S⁻², which react with Ca²⁺.

Therefore, the correct option is option C.

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7 0
1 year ago
11) How many moles of CO2 can be produced from<br> 5.0 moles of O2?
Paraphin [41]

Answer:

3.6 moles

Explanation:

5.0moles produce 44g/x will produce 32g the answer is a3.6moles

5 0
3 years ago
Which element has 3 valence electrons in the 4d sublevel?<br><br> A. V<br> B. Nb<br> C. Cu<br> D. Tl
Lilit [14]
Nb, the transition metal(d) subshell will always be n-1, meaning the 3d subshell will be in row(period) 4. So if it’s 4d then it is row(period) 5, and if it has 3 valence electrons then the element is located in column V, or the third column in the transition metal section.
7 0
3 years ago
Read 2 more answers
10 elements and what you know about their properties and reactions.
marta [7]

Answer:

Hydrogen. H.

Helium. He.

Lithium. Li.

Beryllium. Be.

Boron. B.

Carbon. C.

Nitrogen. N.

Oxygen. O.

Fluorine

Neon

Explanation:

6 0
3 years ago
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12. Draw an energy curve for a chemical reaction that begins at 30 kj and has an activation energy of
Rufina [12.5K]

Answer:

  • <em>Since the activation energy is 50kJ , we need to supply it  50kJ from 30kJ to make it 80kJ .</em>
  • Diagram attached in the file .

8 0
3 years ago
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