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snow_tiger [21]
3 years ago
6

What is wrong with the way that the hypothesis, “Chocolate may cause pimples”, is written?

Chemistry
2 answers:
DaniilM [7]3 years ago
8 0

Answer:

More sweet and cute with the little ones on the surface and a little more

Semenov [28]3 years ago
7 0

Answer:

because chocolate have many pimples on the face

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What mass of propane could burn in 48.0 g of oxygen? C3H8 + 5O2 → 3CO2 + 4H2O
Ipatiy [6.2K]

Answer:

Mass = 13.23 g  

Explanation:

Given data:

Mass of oxygen = 48.0 g

Mass of propane burn = ?

Solution:

Chemical equation:

C₃H₈ + 5O₂     →      3CO₂ + 4H₂O

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 48.0 g/ 32 g/mol

Number of moles = 1.5 mol

now we will compare the moles of propane and oxygen.

              O₂           :          C₃H₈

               5            :            1

             1.5            :          1/5×1.5 = 0.3 mol

Mass of propane burn:

Mass = number of moles × molar mass

Mass = 0.3 mol × 44.1 g/mol

Mass = 13.23 g  

6 0
3 years ago
What are the four most common problems that can arise in your motor design?
Nuetrik [128]

Electric motors are an essential part of our daily life as many systems, applications, and services depend on them. Motors today have a long service life and require a minimum level of maintenance to make sure that they perform efficiently. In large buildings, motors have to be maintained on a regular basis because they need to be in operation all the time; one small problem could cause a great loss to the organization.

Usually in large organizations, a motor maintenance program is carried out in which the causes of motor failures are identified and some necessary steps are taken to avoid them or lower their impact. Motors need to be inspected regularly, and other maintenance activities need to be performed to ensure efficient operation. Whenever a problem occurs, it should be corrected immediately to avoid further loss.

4 0
3 years ago
What does a net ionic equation show about a reaction
AVprozaik [17]

Answer:

A net ionic equation shows only the chemical species that are involved in a reaction, while a complete ionic equation also includes the spectator ions.

Brainlist pls!

6 0
3 years ago
Someone help answer this
alexandr402 [8]

it is water energy :) this is easy

6 0
3 years ago
Read 2 more answers
What do you call A compound composed of two oppositely charged elements?
stepan [7]

Answer: Ionic Bond

Explanation: The electrostatic attraction that binds oppositely charged ions together. alloy. a mixture composed of two or more elements, at least one of which is a metal.

Hope this helped!

5 0
3 years ago
Read 2 more answers
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