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Dmitriy789 [7]
3 years ago
5

1. ancient plants and animals animals 2. consumers transpiration 3. water loss plants 4. relationship of organisms to their envi

ronment habitat 5. nitrogen-fixing bacteria rhizobium 6. energy converting pigment groundwater 7. producer chlorophyll 8. use of energy in food respiration 9. where an organism lives fossil fuel 10. stored in porous rock ecology
Chemistry
1 answer:
Lilit [14]3 years ago
3 0
I don't know what ur asking
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I bake some flour until it turns into leavened bread. Is this a physical or chemical change? Why do you think this?
KatRina [158]
That’s not how it goes.
6 0
3 years ago
Which of the atoms below are least likely to violate the octet rule?
Levart [38]

Answer:

F i think i pretty sure F!!!!!!!!

5 0
3 years ago
What is the net ionic equation for 2Sb(OH)3 (s) + 3Na2S (aq) = Sb2S3 + 6NaOH
tatuchka [14]

Answer:

2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3

Explanation:

First of all, let us balance the equation to give;

2Sb(OH)3 (s) + 3Na2S (aq) = Sb2S3 + 3NaOH

Now, we can observe the presence of positive Sodium ions (Na+) and negative hydroxyl ions (OH-) on both left and right sides of the equation.

Now, the two ions will cancel out. These ions are not really involved in the overall reaction and thus do not require being written in the overall equation. Hence, the overall net ionic reaction can now be written as:

2Sb^(+3) (aq) + 3S^(-2) (aq) = Sb_2•S_3

6 0
3 years ago
What mass of compound must be weighed out to have a 0.0223 mol sample of H2C2O4 (M=90.04 g/mol)?
rodikova [14]
Mass of  H2C2O4 :

mm = 90.04 g/mol

number of moles : 0.0223 moles

m = n * mm

m = 0.0223 * 90.04

m = 2.007 g 

hope this helps!.

5 0
3 years ago
Draw the structure of the compound identified by the following simulated 1H and 13C NMR spectra. The molecular formula of the co
Luba_88 [7]

Answer:  4-allylanisole

Explanation: The doublets behind the 7 ppm belongs to the

para-substituted benzene ring. The three single-proton multi-plets around 5−6 ppm predicts that there has to be a single subsituted alkene group

A single plus a doublet around 3-4 ppm belongs to CH3 and CH2 Groups as they could be attached to the subsituted alkene group.

Moreover the interpretation of the NMR  that there is no peak with a higher intensity for >180 ppm represents an absence of Carbonyl group.

The Predicted Number is attached from a chemical database along with their peaks information

6 0
3 years ago
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