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rewona [7]
3 years ago
12

Which statement describes Sparta’s strategy for the Peloponnesian War?

Chemistry
2 answers:
Debora [2.8K]3 years ago
5 0

Answer:

it is the  Sparta ruined Athens’s farmland to try to get Athens to fight on farm land

Explanation:

just did

andriy [413]3 years ago
3 0

Answer:

the answer is B

Explanation:

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Write a description of how you know a chemical reaction is occurring.
Sladkaya [172]

Answer:

See explanation

Explanation:

Chemical reactions are also referred to as chemical change. A chemical change often leads to the formation of new substances and is not easily reversible.

A chemical reaction may be accompanied by the emission of heat and light, formation of a precipitate, evolution of gas, or a color change.

These observable physical effects may tell us weather a chemical reaction has taken place or not so we have to observe the system closely for any of these effects stated above.

4 0
3 years ago
Can someone please show me how to do problem number 4? Please show work so I can try to understand it. Thanks!
larisa86 [58]
With the given formula, we can calculate the amount of CO₂ using the balance equation but we first need the moles of CH₄

1) to find the moles of CH₄, we need to use the ideal gas formula (PV= nRT). if we solve for n, we solve for the moles of CH₄, and then we can convert to CO₂. Remember that the units put in this formula depending on the R value units. I remember 0.0821 which means pressure (P) has to be in atm, volume (V) in liters, the amount (n) in moles, and temperature (T) in kelvin.

PV= nRT

P= 1.00 atm
V= 32.0 Liters
n= ?
R= 0.0821 atm L/mol K
T= 25 C= 298 K

let plug the values into the formula.

(1.00 x 32.0 L)= n x 0.0821 x 298K

n= (1.00 x 32.0 L )/ (0.0821 x 298)= 1.31 moles CH₄

2) now let's convert the mole of CH₄ to moles to CO₂ using the balance equation

1.31 mol CH₄ (1 mol CO₂/ 1 mol CH₄)= 1.31 mol CO₂

3) Now let's convert from moles to grams using the molar mass of CO₂ (find the mass of each atom in the periodic table and add them)

molar mass CO₂= 12.00 + (2 x 16.0)= 44.0 g/mol

1.31 mol CO₂ ( 44.0 g/ 1 mol)= 57.6 g CO₂

Note: let me know if you any question.



5 0
4 years ago
How do you draw the structure of methylcyclohexane?
Mekhanik [1.2K]

<u>Methylcyclohexane:</u>

The chemical formula of the organic compound, methylcyclohexane is \mathrm{CH}_{3} \mathrm{C}_{6} \mathrm{H}_{11}. It is branched into the group of saturated hydrocarbon.

Note: Refer the attached image for the structure of methylcyclohexane

<u>Structure of methylcyclohexane:</u>

  • It is a monosubstituted cyclohexane because it has one branching through the attachment of single methyl group on one carbon of the cyclohexane ring.
  • Being very toxic to the aquatic ecosystem, the methyl group of this compond in its axial position experiences a steric strain or steric crowding.

3 0
3 years ago
Why is the cell membrane essential for cell homeostasis? A. To create food for the body B. To make energy for other tissues C. P
jek_recluse [69]

Answer: it C

Explanation: Because is the only that makes sense and the only one that seems right

3 0
4 years ago
What are the biochemical properties of water​
kipiarov [429]

Answer:

The biochemical properties of water are 1) chemical structure of water 2) water is a good solvent 3) hydrogen bonding. 4) sticky, wet water 5)the density of ice and water

6 0
3 years ago
Read 2 more answers
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