All categories

3 years ago

Select all of the answers that apply.

2 answers:

6 0

The biomass is the plant or animal product or waste which is not used for eating or feeding and is used for generation of energy (in form of heat or other forms). so biomass if source of energy obtained from biological products.

In the given options

Wood : its waste can be used as biomass

Sun : it is the source of solar energy

Manure: it is decomposed product biological material used in agriculture

Water: it is not a source of energy directly

paper : it is also a product of wood but is not considered to be biomass

trash : it depends that what is present in trash and how it can be used

food crops: yes these are biomass

shtirl [24]3 years ago

5 0

The odysseyware answer is the same as his wood manure and food crops

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Gravity is needed to determine an object's _____.

Lana71 [14]

Weight is affected by gravitational force

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2 years ago

Read 2 more answers

The right answer for this problem

Evgen [1.6K]

Answer:

(a) When aqueous solution of hydrochloric and ammonia chemically react together then it results in the formation of ammonium chloride.

The reaction equation for this reaction is as follows.

Now, ioni equation for this reaction is as follows.

Cancelling the spectator ions, the net ionic reaction equation is as follows.

(b) When sodium hydroxide chemically reacts with ammonium chloride then it forms ammonia, water and sodium chloride as follows.

Now, the total ionic equation will be as follows.

Cancelling the spectator ions from the above equation. Then the net ionic equation will be as follows.

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3 years ago

Chlorine and bromine have very similar chemical properties. This is best explained by the fact that both elements:

34kurt

What is the similarity between chlorine and bromine?

Chlorine and bromine have very similar chemical properties and are best explained by the fact that they both belong to the category of halogens.

Similarities shared by halogens:

Chemical elements are represented as periods and groups on a periodic table. Chemical elements with comparable properties make up each category. Halogens are group 17 elements that are primarily non-metallic.

In the case of halogens, each element's atom possesses seven valence electrons, $ns^{2} np^{5}$ , in which n stands for the energy level. The electron configuration of chlorine is $[Ne]3s^{2} 3p^{5}$ , and the electron configuration of bromine is $[Ar]3d^{10}4s^{2} 4p^{5}$ .

Because of comparable electron configurations, elements of the same group have similar properties. The number of valence electrons, which are located in the outermost (highest energy) s and p orbitals, is particularly similar.

Learn more about halogens here;

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7 0

1 year ago

A gas is collected at 30 Celsius and has a pressure of 200 kPa. What pressure would it exert if the temperature changed to 40 Ce

garik1379 [7]

Answer:

$206.6\ \text{kPa}$

Explanation:

$P_1$ = Initial pressure = 200 kPa

$P_2$ = Final pressure

$T_1$ = Initial temperature = $30^{\circ}\text{C}$

$T_2$ = Final temperature = $40^{\circ}\text{C}$

We have the relation

$\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=\dfrac{T_2}{T_1}P_1\\\Rightarrow P_2=\dfrac{40+273.15}{30+273.15}\times 200\\\Rightarrow P_2=206.6\ \text{kPa}$

The pressure that would be exerted after the temperature change is $206.6\ \text{kPa}$ .

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3 years ago

What is the major role of the Nuclear Regulatory Commission

jolli1 [7]

The NRC is headed by a five-member Commission. The President designates one member to serve as Chairman and official spokesperson. The Commission as a whole formulates policies and regulations governing nuclear reactor and materials safety, issues orders to licensees, and adjudicates legal matters brought before it.

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3 years ago