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3 years ago

Identify the two types of nerve tissue.

Chemistry

2 answers:

Westkost [7]3 years ago

4 0

Neurons- transmit nerve impulses. And Neuroglial cells- are non-conducting “support cells” of nervous tissue.

Anarel [89]3 years ago

3 0

Neurons and neuroglia. Neurons are highly specialized nerve cells that generate and conduct nerve impulses.

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a model of an atom shows eight electrons in rings that represent different energy levels. how many electrons are in each energy

vlada-n [284]

Answer:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

Explanation:

1. four in the first energy level, four in the second energy level

2. eight in the first energy level, zero in the second energy level

3. zero in the first energy level, eight in the second energy level

4. two in the first energy level, six in the second energy level *

4 0

3 years ago

Jordan is doing a science fair project on the effects of music on the growth of tomatoes. He has two tomato plants, Plant A and

algol [13]

The control group is the plant without the music because nothing is being done to it. while the experimental group is the plant with music because you are testing it in a different environment (the music).

6 0

3 years ago

Read 2 more answers

For the most effective hot pack, should the Temperature change be positive or negative ?

bazaltina [42]

Answer:

Positive

Explanation:

For the most effective hot pack, the temperature change should be <u>positive</u>.

<em>Hot packs are generally utilized for their heat-producing abilities. Hence, the reactions leading to the activation of hot packs are usually exothermic, that is, heat energy generating. In other words, positive or increased temperatures must be generated when hot packs are activated.</em>

This is unlike cold packs which are utilized for the cold-generating abilities. Reactions leading to their activations must be endothermic, that is, heat-absorbing.

3 0

3 years ago

A sample of water is mixed with a surfactant. What will most likely happen to the viscosity of the water?

sp2606 [1]

If a sample o water is mixed with a surfactant, the most likely result is that the viscosity of the water will increase. This is because of the property of the surfactant which is generally viscous; and becomes more viscous when mixed with water.

5 0

4 years ago

The theoretical yield of NaBr from

Lapatulllka [165]

Taking into account definition of percent yield, the percent yield for the reaction is 100%.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 FeBr₃ + 3 Na₂S → Fе₂S₃ + 6 NaBr

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

FeBr₃: 2 moles
Na₂S; 3 moles
Fе₂S₃: 1 mole
NaBr: 6 moles

<h3>Moles of NaBr formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 2 moles of FeBr₃ form 6 moles of NaBr, 2.36 moles of FeBr₃ form how many moles of NaBr?

$moles of NaBr=\frac{2.36 moles of FeBr_{3}x6 moles of NaBr }{2 moles of FeBr_{3}}$

moles of NaBr= 7.08 moles

Then, 7.08 moles of NaBr can be produced from 2.36 moles of FeBr₃.

<h3>Percent yield</h3>

The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.

The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:

$percent yield=\frac{actual yield}{theorical yield}x100$

where the theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

<h3>Percent yield for the reaction in this case</h3>

In this case, being the molar mass of NaBr 102.9 g/mole, you know: