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Archy [21]
3 years ago
8

1.) How can people reduce their exposure to BPA?

Chemistry
1 answer:
MakcuM [25]3 years ago
5 0
People can reduce their exposure to BPA by washing out plastic cups, buying BPA free plastics. BPA should be kept out because it can cause a chemical interference in the human body
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Determine the empirical formula of the following compound if a sample contains 0.104 molK, 0.052 molC, and 0.156 molO;?
faltersainse [42]

Answer:

K₂CO₃    

Explanation:

Given parameters:

Number of moles of K = 0.104mol

Number of moles of C = 0.052mol

Number of moles of O = 0.156mol

Method

From the given parameters, to calculate the empirical formula of the elements K, C and O, we reduce the given moles to the simplest fraction.

Empirical formula is the simplest formula of a compound and it differs from the molecular formula which is the actual formula of a compound.

  • Divide the given moles through by the smallest which is C, 0.052mol.
  • Then approximate values obtained to the nearest whole number of multiply by a factor to give a whole number ratio.
  • This is the empirical formula

Solution

Elements                             K                       C                    O

Number of moles            0.104                0.052            0.156

Dividing by the

smallest                       0.104/0.052     0.052/0.052  0.156/0.052

                                            2                           1                     3

The empirical formula is K₂CO₃      

3 0
3 years ago
What are two ways that substances can pass through a cell membrane out of the cell
Paha777 [63]

Answer:

Passive transport, and Active transport

Explanation:

Do u need an explanation?

If so you can tell me and I'll edit it

Hope this helped a little!

3 0
3 years ago
BRAINLIESTTT ASAP!!! PLEASE HELP ME :)
Afina-wow [57]

1 Science is certain about ending up with the actual explanation while pseudoscience does not ensure that.

2 Science is involved with a set of principles to work, while pseudoscience is not operated in a unique method.

3 Science is based on tangible or perceptible evidence, but pseudoscience could be based on some superficial or outlandish concepts.

4 Science result the truth while pseudoscience results the myth.

8 0
3 years ago
Read 2 more answers
A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature rose b
dezoksy [38]

Answer:

872.28 kJ/mol

Explanation:

The heat released is:

ΔH = C*ΔT

where ΔH is the heat of combustion, C is the heat capacity of the bomb plus water, and ΔT is the rise of temperature. Replacing with data:

ΔH =  9.47*5.72 = 54.1684kJ

A quantity of 1.922 g of methanol in moles are:

moles = mass / molar mass

moles = 1.992/32.04 = 0.0621 mol

Then the molar heat of combustion of methanol is:

ΔH/moles = 54.1684/0.0621 = 872.28 kJ/mol

5 0
3 years ago
How many atoms of oxygen is in CO2?
rosijanka [135]

Answer: 2 atoms

Explanation: 2 in Co2 means 2 atoms

7 0
3 years ago
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