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Ksenya-84 [330]
3 years ago
14

What is Data Analysis?

Chemistry
1 answer:
cupoosta [38]3 years ago
4 0

Data analysis is a process of inspecting, cleansing, transforming and modeling data with the goal of discovering useful information, informing conclusions and supporting decision-making

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What is a substance and what are the two types of substances?
masha68 [24]
A pure substance has a constant composition and cannot be separated into simpler substances by physical means. There are two types of pure substances: elements and compounds. Elements: are pure substances made up of only l type of atom. Atoms of the same element are identical in properties.
6 0
3 years ago
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3 attempts left Check my work Click in the answer box to activate the palette. Write the balanced chemical equation where liquid
mel-nik [20]

Answer:

2 C₄H₁₀(l) + 13 O₂(g) ⇄ 8 CO₂(g) + 10 H₂O(g)

Explanation:

When a substance burns we talk about a combustion reaction. When combustion is complete the products are carbon dioxide and water, like in this case. The equation is:

C₄H₁₀(l) + O₂(g) ⇄ CO₂(g) + H₂O(g)

First, we balance the element with the largest stoichiometric coefficient (C).

C₄H₁₀(l) + O₂(g) ⇄ 4 CO₂(g) + H₂O(g)

Then, we balance H because it is in just 1 compound on each side.

C₄H₁₀(l) + O₂(g) ⇄ 4 CO₂(g) + 5 H₂O(g)

Finally, we balance O.

C₄H₁₀(l) + 6.5 O₂(g) ⇄ 4 CO₂(g) + 5 H₂O(g)

Since we want the smallest whole numbers, we multiply all coefficients by 2.

2 C₄H₁₀(l) + 13 O₂(g) ⇄ 8 CO₂(g) + 10 H₂O(g)

4 0
3 years ago
Splash (TikTok edition)<br><br><br>A: Now that you know how my ice be<br><br>B: know how the ice be
Annette [7]
A: Now that you know how my ice be.
4 0
3 years ago
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At 1.3 atm and 23 degrees Celsius, 12.5 grams of a gas occupies a volume of 8.2 liters. What is the molar mass (grams/mole) of t
klemol [59]

Answer:

0.44 moles Molar Mass = 28.496

Explanation:

1.3(8.2)=n(0.0821)(23+273)

PV=nRT

12.5/0.43865

7 0
3 years ago
A sample of Ni(CO)4, a toxic transition-metal complex, has 5.23 x 10^24 atoms of carbon. How many atoms of Ni does it contain?
miss Akunina [59]
In Ni(CO)₄ the stoichiometry of Ni to C is 1:4
for every 4 atoms of C is attached to one Ni atom.
this means that if there are 4 atoms of C - 1 atom of Ni
in 5.23 x 10²⁴ atoms of C -1/4 x 5.23 x 10²⁴ atoms of Ni
                                        = 1.3075 x 10²⁴ atoms of Ni
the number of atoms rounded off to the second decimal place = 1.31 x 10²⁴ atoms 
correct answer is E
3 0
3 years ago
Read 2 more answers
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