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GREYUIT [131]
3 years ago
9

What is the SI base unit for time?

Chemistry
1 answer:
MaRussiya [10]3 years ago
6 0
<span>The "second" is the SI base unit of time.</span>
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What is the theoretical yield of ammonia that can be obtained from the reaction of 10.0 g of H2 and excess N2?
zubka84 [21]
Theoretical yield is the ideal number, so we'll assume it all reacted without issue.
\frac{10.0gH _{2} }{1}×\frac{1molH_{2} }{2.016gH _{2} }×\frac{2molNH _{3} }{3molH _{2} }×\frac{17.03gNH _{3} }{1molNH _{3} }=56.3gNH↓3
8 0
3 years ago
Read 2 more answers
Which element has the lowest first ionization energy?<br> Be<br> Sr<br> OCa<br> Mg
Dmitrij [34]
Answer
I think Sr
Hope this help!
5 0
3 years ago
Which one of these complementary base pairs can form three hydrogen bonds?
ValentinkaMS [17]

Answer:

Option D is the correct answer

Explanation:

There are three hydrogen bonds formed between Guanine and Cytosine base.  

The first hydrogen bond is formed between the oxygen atom on Carbon-6 (C-6) of guanine, and one of the hydrogen atoms attached to the Nitrogen atom (i.e the one of the hydrogen atoms in the amino group) on the Carbon-4 (C-4)of the cytosine base.  

The second hydrogen bond is formed between the hydrogen atom on Nitrogen-1 (N-1) of the guanine base and Nitrogen-3 (N-3) of the cytosine base.

The third hydrogen bond exist between one of the hydrogen atoms in the amino group attached to the second Carbon (C-2) of the guanine base, and the oxygen atom attached to the second Carbon (C-2) of the cytosine base.  

7 0
3 years ago
64g of sulfur dioxide (SO2) contains 32g of oxygen. Calculate how much sulfur it contains?
KengaRu [80]
Mass of SO2 = mass of sulfur+ mass of oxygen
⇒ 64 g= mass of sulfur+ 32 g
⇒ mass of sulfur= 64 g-32 g
⇒ mass of sulfur= 32 g.

There is 32 g of sulfur in 64 g of SO2~
6 0
3 years ago
How many electrons in an atom can share the quantum numbers n = 4 and l = 3?
o-na [289]

Answer:

\boxed{\text{14}}

Explanation:

If l = 3, the electrons are in an f subshell.

The number of orbitals with a quantum number l is 2l + 1, so there

are 2×3 + 1 = 7 f orbitals.

Each orbital can hold two electrons, so the f subshell can hold 14 electrons.

\boxed{\textbf{14 electrons}} \text{ can share the quantum numbers n = 4 and l = 3.}

3 0
3 years ago
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