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Mandarinka [93]
3 years ago
7

Why is petrified wood considered a fossil?

Chemistry
2 answers:
earnstyle [38]3 years ago
5 0

Answer:

Petrified wood was part of a plant that has been changed into rocks.

Explanation:

Yeet

Novosadov [1.4K]3 years ago
3 0

Answer:

it can be changed into rocks

Explanation:

im 100% sure

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Ammonia (NH3) reacts with oxygen (O2) to produce nitrogen monoxide (NO) and water (H2O). Write and balance the chemical equation
bekas [8.4K]

Answer:

There is 1.6 L of NO produced.

Explanation:

I assume you have an excess of NH3 so that O2 is the limiting reagent.

<u>Step 1:</u> Data given

2.0 liters of oxygen reacts with ammonia

<u>Step 2:</u> The balanced equation

4NH3 + 5O2 → 4NO + 6H2O

For 4 moles of NH3, we need 5 moles of O2 to produce 4 moles of NO and 6 moles of H2O

Consider all gases are kept under the same conditions for pressure and temperature, we can express this mole ratio in terms of the volumes occupied by each gas.

This means:  when the reaction consumes  4  liters of ammonia (and 5 liters of oxygen) it produces  4  liters of nitrogen  monoxide

Now, when there is 2.0 liters of oxygen consumed, there is 4/2.5 = 1.6 L of nitrogen monoxide produced.

There is 1.6 L of NO produced.

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3 years ago
A team of researchers are working on a project to make a new kind of airplane fuel. During their experiment, there was an explos
Igoryamba

<span>This is Pseudoscience. The scientists didn’t study their experiment, they would have to prove their claim more than once, and they assumed things before actually studying it. </span>

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3 years ago
Which of the following is an advantage of using an electronic balance instead of a triple beam balance?
Olin [163]
D, all of these. (this is to reach the word limit on answers ignore it)
8 0
2 years ago
Mr. Keith lights a pine tree-scented candle in his office before grading his students’ CRQs. While the candle wick burns, some o
ANEK [815]

Answer:

the answer is w

Explanation:

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3 years ago
Explain how neurotransmitters work.
kolbaska11 [484]

Answer and Explanation:

In most of the cases a neurotransmitters is discharged based on what's known as the axon terminal after an activity potential has arrived at the neurotransmitter, a spot where neurons can transmit sign to one another. These cells contain receptors where the synapses can tie and trigger changes in the cells.

Neurotransmitters are put away in synaptic vesicles, bunched near the cell film at the axon terminal of the presynaptic neuron. Synapses are discharged into and diffuse over the synaptic split, where they tie to explicit receptors on the film of the postsynaptic neuron.

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