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Vlada [557]
3 years ago
10

For a science project, Janet performs four experiments that are supposed to show a chemical reaction. She displays her results i

n a table.A 4-column table with 4 rows. The first column titled experiment has entries 1, 2, 3, 4. The second column titled substances has entries water + heat, vinegar + baking soda, cabbage juice + lemon juice, liquid A + liquid B. The third column titled evidence of reaction has entries gas formation, gas formation, color change, precipitate formation. The fourth column titled Chemical Reaction ? has entries yes, yes, yes, yes.In the column titled "Chemical reaction?,” which experiment’s data should be changed to "No”?Experiment 1Experiment 2Experiment 3Experiment 4
Chemistry
1 answer:
g100num [7]3 years ago
5 0

Answer:

Experiment 1

Explanation:

I don’t know if this is right

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What shape and bond angles would this molecule have in three dimensions?
Darya [45]

Answer : The shape and bond angle of the given molecule is, bent and 120^o respectively.

Explanation :

In the given molecule, 'Y' is the central atom and 'X' is the neighboring atom. In the given molecule, there are 4 electron pairs that means the hybridization will be sp^3 and the electronic geometry of the molecule will be tetrahedral.

But as there are two atoms around the central atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular and the bond angle will be, 120^o.

Hence, the shape and bond angle of the given molecule is, bent and 120^o respectively.

5 0
3 years ago
Read 2 more answers
Will Upvote!
Greeley [361]
I would think energy has been transferred <span />
4 0
3 years ago
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a titanium bicycle frame displays 0.250 L of water and has a mass of 1.21kg. what is the density of the titanium on g/cm3?
fomenos

Answer:

$4.49 g/cm3

Explanation:

Density=Mass/Volume

plzz put brainiest

3 0
2 years ago
Which of the following is not a solution? <br> Saltwater<br> Steel<br> Vinegar<br> Granite
pishuonlain [190]
Good evening, Laneyc!

Granite is not known as a solution because it has little pieces inside of it, so it cannot form all the way to an actual "solution".

I hope this answer has satisfied your needs, and if you have anymore questions, feel free to ask. Have a good night!

7 0
3 years ago
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Substance in which two or more elements are combined in a fixed proportion
Firdavs [7]

Answer: compound

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper Cu

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water H_2O

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

8 0
3 years ago
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