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tatiyna
3 years ago
8

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 1 Experiment 2 Experiment 3 Experiment 4
Chemistry
2 answers:
NeX [460]3 years ago
6 0

Answer: D

Explanation:

dolphi86 [110]3 years ago
5 0

Answer:

it is A

Explanation:

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help plz Which list is in order from smaller to larger sediment particles? A. sand, silt, clay B. clay, silt, sand C. silt, sand
MariettaO [177]

Answer : The correct option is B (clay, slit, sand).

Explanation :

Soil particles are of three types : Sand, Slit and clay. Most of the soils particles are made up of a combination of sand, slit and clay.

Particle size range of the sand = 2.00 -0.05 mm

Particle size range of the slit = 0.05 -0.002 mm

Particle size range of the sand = less than 0.002 mm

Sand is the largest soil particle, clay is the smallest soil particle and slit particle is present in between the sand & clay particle.

Therefore, the order from smaller to larger sediment particles is

Clay > Slit > Sand

5 0
4 years ago
Which model was proposed as a result of Rutherford's scattering experiment where positive particles did not pass straight throug
dimulka [17.4K]

Answer:

the nuclear model of the atom

6 0
3 years ago
At which point on a phase diagram do you have a solid a liquid and a gas simultaneously
Mekhanik [1.2K]
In a phase diagram, the point at which the solid, liquid, and gas coexist simultaneously is called the TRIPLE POINT. There is a specified pressure and temperature at which the substance can exist in equilibrium with these three phases being present. 
8 0
3 years ago
Read 2 more answers
Besides energy form the sun, what force helps move water molecules through the water cycle
Angelina_Jolie [31]

Answer:

Aside from the sun, the water cycle is driven by the transpiration in plants and respiration in humans. Humans and animals both release water vapor in the atmosphere.

Explanation:

I hope this helps you! :D

6 0
3 years ago
(20 pts] Provide the detailed mechanism of hydration of the following aldehyde in acidic solution. (You need to show all steps,
notsponge [240]

Answer:

The equilibrium for hydrate formation depends both on steric and electrical factors of the carbonyl as discussed in the previous section. In most cases the resulting gem-diol is unstable relative to the reactants and cannot be isolated. Exceptions to this rule exist, one being formaldehyde where the small size of the hydrogen substituents relative to aldehydes and ketones favor hydrate formation. Thus, a solution of formaldehyde in water (formalin) is almost exclusively the hydrate, or polymers of the hydrate. The addition of electron donating alkyl groups stabilized the partial positive charge on the carbonyl carbon and decreases the amount of gem-diol product at equilibrium. Because of this ketones tend to form less than 1% of the hydrate at equilibrium.

Explanation:

4 0
3 years ago
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