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seropon [69]
3 years ago
13

At the end of his compositions, bach wrote these initials---s.d.g.---which translate as:

Chemistry
1 answer:
Makovka662 [10]3 years ago
8 0
Soli Deo Gloria is a Latin term for Glory to God alone. It has been used by artists like Johann Sebastian Bach<span>, George Frideric Handel, and Christoph Graupner

https://en.wikipedia.org/wiki/Soli_Deo_gloria
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An Erlenmeyer flask containing 20.0 mL of sulfuric acid of an unknown concentration was titrated with exactly 15.0 mL of 0.25 M
MrRa [10]

Answer:

0.09375M

Explanation:

There are two methods of going about this, either we use dilution formula (easiest and fastest) or we solve through molarity.

Using dilution formula,

C2 (H2SO4) = ?

C1 (NaOH) = 0.25M

V2 (H2SO4) = 20cm³

V1 (NaOH) = 15cm³

However we can solve using molarity method

Equation of reaction =

2NaOH + H2SO4 ====》 Na2SO4 + 2H2O

O.25M of NaOH = 1000cm³

X moles = 15cm³

X = (0.25 * 15) / 1000

X = 0.00375 moles is present in 15cm³ of NaOH

From equation of reaction,

2 moles of NaOH requires 1 mole of H2SO4

Therefore

0.00375 / 2 = 0.001875 moles is present in H2SO4

From the reaction,

0.00187 moles of H2SO4 = 20 cm³

X moles = 1000cm³

X = (0.00187*1000) / 20 = 0.09375M

8 0
3 years ago
Please help easy chemistry
Rzqust [24]

Answer:

The answer to your question is the third option, atoms of each lose one electron to achieve stability.

Explanation:

a) The first option is incorrect, those elements are extremely reactive and can explode.

b) The option is also incorrect, metalloids are located in groups 3A, 4A OR 5A in the periodic table.

c) This option is correct

d) These elements have 1 valence electron, this option is wrong.

5 0
3 years ago
A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes t
MArishka [77]

Answer:

D.  because water and mud behaved in a similar way in the past as they do today

Explanation:

One of the fundamental theories in the field of earth science is the theory of uniformitarianism.

Uniformitarianism was proposed by James Hutton in the 18th century in Scotland. The theory states that "geologic processes occurring today have occurred in times past and that the present is the key to past".

The simple meaning of the theory is that, the processes on earth today such as weathering, erosion, e.t.c have also occurred in times past. Those processes still occur today and an understanding of such events today will help us have a better insight into the past.

Therefore, ripple marks just as they form today from action of mud and water would be formed in a similar way in the past.

6 0
3 years ago
How and why do we see colors?
vladimir1956 [14]

Answer:

Light receptors within the eye transmit messages to the brain, which produces the familiar sensations of color. Newton observed that color is not inherent in objects. Rather, the surface of an object reflects some colors and absorbs all the others. We perceive only the reflected colors.

7 0
3 years ago
Instrument for measuring the basic units​
o-na [289]

Answer: A Ruler

Explanation:A Ruler is a common instrument used for measuring the length of small objects. It usually has four units of measurement to choose from: millimeter, centimeter, inch, and foot.

4 0
4 years ago
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