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nikklg [1K]
3 years ago
6

WORTH 53 POINTS AND BRAINLIEST!!!

Chemistry
2 answers:
Natali5045456 [20]3 years ago
8 0
The answer would be D carbon dioxide
Nat2105 [25]3 years ago
3 0

Answer:

D.) Carbon Dioxide

Explanation:

Pure Substance is defined as an element or compound that cannot be separated by physical means. In this case, Carbon Dioxide is a molecule that cannot be separated without breaking a chemical bond.

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A chemist carefully measures the amount of heat needed to raise the temperature of a 894.0g sample of a pure substance from to −
astraxan [27]

Answer:

C = 0.2349 J/ (g °C)

Explanation:

Mass, m = 894.0g

Initial Temperature = −5.8°C

Final Temperature =  17.5°C

Temperature change = 17.5°C - (−5.8°C) = 23.3

Heat, H = 4.90kJ = 4900 J

Specific heat capacit, C = ?

The relationship between these quantities is given by the equation;

H = mCΔT

C = H / mΔT

C = 4900 / (894)(23.3)

C = 0.2349 J/ (g °C)

4 0
3 years ago
A plain-carbon steel contains 45 wt % proeutectoid ferrite. What is its average carbon content in weight percent
ASHA 777 [7]

Answer:

hold i got u

Explanation:

7 0
2 years ago
Part V Write the (a) half reaction of oxidation, (b) half reaction of reduction, & (c) the balanced redox reaction for all o
Eduardwww [97]

Answer:

Explanation:

a. Oxidation : 2O + 4e^- ------> 2O^2-

b. Reduction: 2Sr - 4e- -------> Sr^2+

c. Balanced redox reaction

2Sr + O2 ------------> 2Sr O

Oxidation and reduction can be defined by various means, addition of oxygen, removal of hydrogen, removal of electrons. For this reaction, this definition is used, oxidation is the loss of electrons while reduction is the gaining of electrons.

In (a) oxidation half reaction, the valency of oxygen is zero and then moves into lossing two electrons resulting into -2 valency.

In (b) reduction half reaction, the valency of Sr is zero and gains electrons resulting into valency of 2.

In the overall redox reaction, Sr and O2 with valency of 0 each reacts together and form SrO with valency of 2 and -2 respectively, which gives 0 and then balances the equation.

8 0
3 years ago
For SCl4, the electron domain geometry is _______(i)________ and the molecular geometry is ______(ii)________.
Likurg_2 [28]

The electron domain geometry is trigonal bipyramidal while the molecular geometry of the compound is seesaw.

The shapes of molecules is determined by the number of electron pairs on the valence shell of the central atom in the molecule. These electron domains include lone pairs and bond pairs.

The lone pairs only contribute towards the electron domain geometry and not the molecular geometry. SCl4 has five electron domains hence its electron domain geometry is trigonal bipyramidal. The molecular geometry of the compound is seesaw.

Learn more: brainly.com/question/6505878

8 0
3 years ago
Conservation of Mass means:
Anarel [89]

Answer:

Conservation of mass mean mass cannot be created nor destroyed

Explanation:

3 0
3 years ago
Read 2 more answers
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