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mrs_skeptik [129]
3 years ago
5

In an undisturbed stack of rock layers, each containing fossils of once-living organisms, where would some evidence of the most

ancient life forms MOST LIKELY be found?
Chemistry
2 answers:
zubka84 [21]3 years ago
5 0
Some evidence of the most ancient life forms would most likely be found in fossils!
julia-pushkina [17]3 years ago
5 0

Answer: In the bottom layer.

Explanation:

The rule of the fossil formation is that the first layer that is formed is at the bottom of the stack. The second layer contains less organism than the first layer.

This is the principle of super position that the first layer formed will be at the bottom and the newest layer formed will be at the top of the soil in the stacking.

Hence, most of the fossils will be found in the oldest layer of the soil which means at the bottom of the soil.

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What is the name for the compound with the formula ncl3?
stellarik [79]
Nitrogen trichloride is the name of this compound
4 0
4 years ago
The following reaction, catalyzed by iridium, is endothermic at 700 K: CaO(s) + CH4(g) + 2H2O (g) → CaCO3 (s) + 4H2 (g) For the
arsen [322]

Answer:

A. Increasing the temperature will favor forward reaction and more CaCo3 formed.

B. More CaCo3 will be formed.

C. CaCo3 will decrease and more react ants formed.

D. Less CaCo3 will be formed.

E. Iridium is a catalyst so there is no effect

Explanation:

A. Temperature will increase because it's an endothermic reaction.

B. Adding Cao will favor forward reaction and more CaCo3 formed.

C. Removing methane, more react ants are formed and CaCo3 decreases.

D. Irridi is a catalyst so it has no effect on the CaCo3 but only speeds its rate of reaction.

3 0
3 years ago
The pungency of chillies is due to ____________.​
Vera_Pavlovna [14]

Answer:

The hotness or pungency of chilli is due to presence of a group of compounds called capsaicinoids. Among capsaicinoids, capsaicin and dihydrocapsaicin are present in major quantities, while homocapsaicin, nordihydrocapsaicin and homo-dihydrocapsaicin are present in very small quantities.

3 0
3 years ago
Read 2 more answers
3. Are quartz and coal minerals or only naturally occurring<br> substances?
klasskru [66]

Answer:

minerals

Explanation:

coal is made from decomposing matter

6 0
3 years ago
Use the balanced equation to solve the problem.
harkovskaia [24]

Answer:

4.20 moles NF₃

Explanation:

To convert between moles of N₂ and NF₃, you need to use the mole-to-mole ratio from the balanced equation. This ratio consists of the coefficients of both molecules from the balanced equation. The molecule you are converting from (N₂) should be in the denominator of the ratio because this allows for the cancellation of units. The final answer should have 3 sig figs because the given value (2.10 moles) has 3 sig figs.

1 N₂ + 3 F₂ ---> 2 NF₃

2.10 moles N₂        2 moles NF₃
---------------------  x  ---------------------  =  4.20 moles NF₃
                                  1 mole N₂

7 0
2 years ago
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