Can someone please help me? :(

Answer:

In poorly sorted sediments, those with a larger range of grain sizes, the finer grains tend to fill the spaces between the larger grains, resulting in lower porosity. Primary porosity can range from less than one percent in crystalline rocks like granite to over 55% in some soils.

Explanation:

Answer:

N2 and NH3 both have 3 so try one of those ones

This is defined as a variant form of a gene. We were told that allele for  white wool is dominant to the allele for black wool and two heterozygous sheep mated.

When we cross Ww and Ww we get WW, Ww, Ww, ww. Since white is dominant then the percentage is 3/4 = 75 percent.

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the density increases down the group.

Answer:

B) 3.0 g/mL

Explanation:

density formula: mass/volume

15/5=3

Answer:

The atomic number is written on top of the element symbol.

Explanation:

From top to bottom:

-Atomic Number

-Element Symbol

-Name

-Atomic Mass

~

Answer:

the reaction will shift right towards products

Explanation:

Answer:

Its False

Explanation:

Its False because the concentartion would have to be the solute the thing being added. BUT if you add the equal amount of solvent and add more solute than the one you added more solute is the more concentarted.

AN EXAMPLE:

An example we have Cup A and Cup B we add the same amount of water to both cups but i add more solute to cup A (Examples of solute Salt,powder)  and i add less solute to b I balance them in a balance. and cup A is the most concentrated because It has more solute.

ANOTHER EXAMPLE:

Lets do the same thing i add the same amount of water to cup A and B I want to add the same solute but i cant since Cup A saturates At 8 Spoons And B at 6 So  cup A is most concentared

Conclusion:

So it all depends on the solute how much you add or at how many spoons you saturate.

Thats all I hope it helped!!

The concentration of the solution depends upon the number of moles of solute with changing, the concentration will change. Therefore, the given statement is false.

The concentration of the given solution can be determined in the terms of molarity, Normality, and molality. We can easily calculate the molar concentration of a substance in a solution.

In chemistry, concentration can be described as the abundance of a constituent divided by the total volume of a mixture. The concentration can be mass concentration, number concentration, molar concentration, and volume concentration.

The concentration of the solution determined as the number of moles of a solute per unit volume of a solution is known as molarity or molar concentration.

The Molar concentration of a solution is evaluated in the following way.

Molarity (M) of the solution = Moles of solute/Volume of the Solution

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Answer:

A: ATCGGA

Explanation:

First, think about which base pairs arise in complementary strands of DNA..

Answer:

two transitions elements are iron and cobalt

Answer:

When a gas expands into a vacuum, its entropy increases because the increased volume allows for greater atomic or molecular disorder. The greater the number of atoms or molecules in the gas, the greater the disorder.

Explanation:

Answer:

Al(NO3)3 + 3NaOH -----> Al(OH)3 + 3NaNO3

Answer:

becl2

Explanation:

because

a it has incomplete outer

b it accept electron pair

Answer:

1. Draw a pencil line across the filter paper, 1 - 2 cm from the bottom.

2. Use a pipette or capillary tube to add small spots of each ink to the line on the paper.

3. Place the paper into a container with a suitable solvent in the bottom. For example, water. Make sure the water level is below the pencil line.

4. Allow the solvent to move through the paper, but remove the chromatogram before it reaches the top.

5. Allow the chromatogram to dry.

Extras : preferably use a lid to prevent evaporation and use a pencil or any suitable device to prop the paper in place, make sure the sides of the paper doesn't touch the sides of the beaker.

Hokkaido University researchers have synthesized an organic compound with a longer bond between carbon atoms than ever before - exceeding the assumed limit for carbon-carbon single bond (C-C) lengths. The researchers termed it a "hyper covalent bond." The novel polycyclic hydrocarbon named 10c is stable, and an X-ray analysis showed that its C-C bond lengths was as long as 1.806 angstroms, longer than the previously reported world records for hydrocarbons.

Answer:

the answer for a is 2mol/dm3

Explanation:

n=0.2mol of NaOH

v=100cm3

[tex]v = \frac{100}{1000} \\ v = 0.1 {dm}^{3} \\ concentration = \frac{n}{v} \\ = \frac{0.2}{0.1} \\ = 2mol {dm}^{3} [/tex]

Answer:

No

Explanation:

Mass affects the amount of gravity that acts on an object.

Answer:

Mass is determined by the quantity of matter in a physical object.

Mass is how much space something takes up, while weight is how much an object is acted on by a force because of gravity.

Explanation:

Gravity does not determine the mass of an object. For example, an object on the Moon would weigh less than it does on Earth because of the lower gravity, but it would still have the same mass. This is because weight is a force, while mass is the property that determines the strength of this force.

A.2-octene  is the name of the molecule shown below.

The oct part of the name indicates the parent chain. In this case, oct- is an abbreviation for octane, which means that there are 8 carbons in the parent chain. The first part of the name, cis-2. 2 is used to indicate the first atom that forms the double bond above.

Alkenes are classified into higher olefins and alpha olefins. This means that the double bond is in the alpha (primary) position, which makes the compound more reactive and provides useful chemistry.

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Answer:

9.69g

Explanation:

Xmol of n2= 7.774/22.4= 0.346 mole

molar mass of n2 2×14 =28g/Mol

Mas of n2= 0.346×28

Mas of n2=9.69grams

An example of a temporary disruption from equilibrium is a temperature change, this would be compensated through sweating.

This refers to a constant state in which forces are balanced. Inside the body, equilibrium means certain conditions such as the level of oxygen or the temperature are constant.

This can be lost due to many factors, in the body, this occurs as a result of sudden changes either inside or outside the body. An example of this is sudden temperature changes, for example, if you go out of your house and it is snowing or it is very hot outside.

The body has specific mechanisms to restore the temperature. For example, if the environmental temperature is too high the body uses sweating to keep a constant temperature.

Note: This question is incomplete because the list of part 1 is not given; due to this, the answer is based on general knowledge.

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Answer: describe in general a process desert plants might need to carry out in order to maintain homeostasis

Explanation:

What's a combustion

It means hydrocarbon burns in presence of excess oxygen to produce carbon dioxide and heat

As solid state is converted to gaseous so randomness increases hence it's spontaneous

Combustion is the process of combining with oxygen to form water and carbon dioxide. It is an exothermic reaction and will release energy. Thus delta H for combustion is negative.

Enthalpy change of reaction is the change in heat absorbed or released by a reaction. If heat is absorbed by the system , the reaction is called endothermic and the change in enthalpy delta H is positive.

For a reaction which release energy, the change in enthalpy delta H will be negative and thus the reaction is said to be exothermic. Combustion is an exothermic reaction.

During combustion new bonds are formed between carbon and oxygen and carbon and hydrogen. Thus bond making is happend more than bond breaking. Bond breaking needs much energy than bond making.

Hence, the released energy is more form combustion and enthalpy change is negative. The process needs no more energy thus the reaction is spontaneous. Thus option C is correct.

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Considering the definition of pH, the pH of 3.65 grams of HCl dissolved in 1250 mL distilled H₂O is 1.0969.

pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.

Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:

pH= - log [H⁺]

The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.

Molar concentration or molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of solute by the volume of the solution:

[tex]Molarity=\frac{number of moles}{volume}[/tex]

In this case, you know:

Replacing in the definition of molarity:

[tex]Molarity=\frac{0.1 moles}{1.250 L}[/tex]

Solving:

Molarity= 0.08 [tex]\frac{moles}{liter}[/tex]= 0.08 M

Hydrochloric acid is a strong acid, so in aqueous solution it will be totally dissociated. So the concentration of protons is equal to the initial concentration of acid. This is: [H⁺]= [HCl]= 0.08 M

Replacing in the definition of pH:

pH= - log (0.08 M)

Solving:

pH= 1.0969

Finally, the pH of 3.65 grams of HCl dissolved in 1250 mL distilled H₂O is 1.0969.

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pH:

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Answer:

41.495

Explanation:

107 gm of 2NH4Cl gives 111 gm of CaCl2

40 gm of 2 NH4Cl gives =(111*40)/107

=41.495 gm of CaCl2

Answer:

Flammable liquid is any liquid having a flashpoint at or below 199.4 °F (93 °C).

Explanation:

:)

Flashpoints for flammable liquids are at 100°F. Lower flash points allow for easier ignition of liquids. A liquid's flash point is the lowest temperature at which a concentrated enough layer of vapor accumulates on top of its surface to allow for ignition.

A liquid that is flammable has a flash point* below 37.8 ° C (100 ° F). A flammable liquid has a flash point that ranges from 37.8 to 93.3° C (100 to 200° F), which is above the standard working temperature. Flammable liquids emit a vapor that, at standard working temperatures, is easily ignitable.

The substance ignites more readily the lower the flash point. For instance, petrol is more flammable than ethylene glycol and has a flash point of about -40 degrees C (-40 °F).

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The amount of heat transferred to the water if the temperature of 60.0 g of water increases by 4.50 °C is 1.134Kj.

The quantity of heat transferred to a substance can be calculated using the following formula:

Q = mc∆T

Where;

According to the information in this question;

Q = 60 × 4.2 × 4.5

Q = 1134J

Therefore, the amount of heat transferred to the water if the temperature of 60.0 g of water increases by 4.50 °C is 1.134KJ.

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Answer:

8 m/s

Explanation:

The Formula

⇒ v = final velocity

⇒ u = initial velocity

⇒ a = acceleration

⇒ t = time taken

Given

Solving