CHEMISTRY MIDDLE SCHOOL

Which of the following is an example of anaerobic respiration? Plant roots respiring in soil
Respiring while swimming underwater
Oxygen diffusing into a plant cell through stomata
Breaking down of glucose with oxygen inside an animal cell

Answers

Answer 1
Answer: your answer is D have a good day 
Answer 2
Answer:

Answer:

D

Explanation:

think about it its d  i did the test and the answer was right!

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What is the scientific methodology for conducting experiments? List steps.

Answers

The basic scientific method for conduction an experiment is simple:

(1)Ask a Question
(2)Research and Come up with a Hypothesis
(3)Test Your Hypothesis by Doing an Experiment
(4)Analyze Your Results
(5) Make a Conclusion
(6) Share Your Results

Hope this helps!

Is bro2 polar or nonpolar​

Answers

Bro2 is polar because the rules for overall polarity of Neutral Species Arrangement of Group Linear Trigonal Planar Tetrahedral Trigonal Bipyramidal Octahedral Polarity if atoms on either side of the center atom are different, the species is polar if any group around the central atom is different.

A plasma that has particles that never collide frequently enough to exchange kinetic energy and never reach a temperature equal to the surroundings is categorized as a

Answers

Answer: Thermal plasma

Explanation:

Answer:

A on edg

Explanation:

What must occur before clouds can form?

Answers

Condensation must occur.
condensation of water vapor also the water vapor must lose heat energy

Identity and describe the sequence of dissolving

Answers

let hope this helps if you put salt in the water the water (eats) as i would say and breaks into pieses until its fully dissolved

:)

What is the mass of oxygen in 250 g of sulfuric acid H2SO4?

Answers

Hi,

Here is the step by step procedure to find the answer:

First of all we need to find out the molecular mass of H2SO4

  • H = 1.008
  • S = 32.065
  • O = 16

So mass of H2 SO4 will be : (2x1.008) + (1x32.065) + (16x4)

                                          = 98.081 g/mole  

This shows that 1 mole of H2So4 contain 98 grams.

Now we need to fin out the no. of moles of H2SO4 in 250 grams

                                    250 g x (1mole/250g)

                                           = 2.5489 moles

Now we need to find out how many moles of oxygen are present in 2.5489 moles of H2SO4.

So, as mentioned in the formula of H2SO4, we can see that four moles of oxygen are present in one mole of H2SO4

It means that 2.5489 moles of H2SO4 contain:

                                      2.5489 x4

                       = 10.19565 moles of oxygen  

Now, it is very simple to determine the mass of 10.19565 moles of oxygen by using the formula:

                                no. of mole= mass/molar mass

                                     10.19565 moles= X/ 16 g

                                            10.19565 x 16= X

                                              X= 163.13 grams  

Therefore,  mass of oxygen in 250 g of H2SO4 is 163.13 grams  

Hope it help!
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