i don’t really know how to do this and need help

1nm=10^-6 cm.

476 nm = 4.76E-5 cm

Answer:

it is a liquid that is made from the combination of a liquid and a solid.

Explanation:

When these two states of matter are ground and mixed together, they form one state that is liquid

Answer:

Solid and liquid

Explanation:

Solid= ice cream or ice

Liquid= milk

these are common things used in a milkshake

Answer:

The enthalpy of vaporization of a given substance is much greater than its enthalpy of fusion because it takes more energy to completely separate molecules (c

Answer:

Specific chemical sugar glucose

Explanation:

When we say “blood sugar,” we mean the specific chemical sugar glucose. Diabetes is all about glucose. There lots of sugars….table sugar is sucrose, malt sugar is maltose, milk sugar is lactose, and you’ve probably heard of fructose.

Blood sugar, or glucose, is the main sugar found in your blood. It comes from the food you eat, and is your body's main source of energy. Your blood carries glucose to all of your body's cells to use for energy.

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Given the pressure in KPa, the value of the pressure reading in torr obtained is 20.73 torr

101.325 KPa = 760 torr

The value of the pressure in torr can be obtained as illustrated below:

101.325 KPa = 760 torr

Therefore,

2.76324 KPa = (2.76324 × 760) / 101.325

2.76324 KPa = 20.73 torr

Thus, 2.76324 KPa is equivalent to 20.73 torr

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Answer:

A salt metathesis reaction, sometimes called a double displacement reaction, is a chemical process involving the exchange of bonds between two reacting chemical species which results in the creation of products with similar or identical bonding affiliations.

Explanation:

From: Wikipedia

Answer:

b is the answer

Answer:

Its would be a very low C or a high D

Explanation:

Depending on what your teacher says or if you only got part of a question wrong it would be a very low C or a high D.

Answer: The color that will appear when the nichrome wire is properly cleaned and introduced into flame would be orange

Answer:

eight because I think it's eight

Solar energy is a viable alternative energy resource due to its high usage application.

The solar energy is considered as a viable alternative energy resource because this energy can used in the form of electricity for operating all electrical devices present in our homes.

So we can conclude that solar energy is a viable alternative energy resource due to its high usage application.

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Answer:

It has an endless supply is the answer.

Answer:

25% is left   15 gm

Explanation:

(1/2)^2 = 25%

Answer:

b. 25% unchanged and 75% stable

Explanation:

got it right on edge

Answer:

Mechanical weathering breaks rocks into smaller pieces without changing their composition. … Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.

Explanation:

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Answer:

Mechanical weathering reduces the size of rocks without altering their content.

Chemical weathering damages rocks by creating new materials that are stable on earth's surface.

Answer:

chemical change i think

Explanation:

As the drops of vinegar fall through the oil to the bottom of the bottle, it reacts with the baking soda to make carbon dioxide gas. These bubbles attach themselves to the colored vinegar and cause them to float to the surface. When the bubbles pop, the color sinks back to the bottom of the bottle.

(a) When more gas is added, the number of moles of the gas increases, and  the total pressure of gas inside same vessel will increase.

(b) When the conatiner's volume is increased, the total pressure of gas inside the vessel will decrease.

The ideal gas law of general gas equation, can be used to describe the behavior of an ideal gas.

The ideal gas law is given as;

PV = nRT

where;

When more gas is added, the number of moles of the gas increases, and  the total pressure of gas inside same vessel will increase.

When the conatiner's volume is increased, the total pressure of gas inside the vessel will decrease.

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Answer:

Teflon

Explanation:

Mass is the measure of the quantity of the substance present in the sample containing a compound or molecule. The mass of sucrose in the sample is 171 g.

The mass of the compound in the sample is the product of the number of moles of the substance and the molar mass of the compound.

Given,

The molar mass of the sucrose compound = 342.3 g/mol

Number of moles of sucrose = 0.500 moles

Mass of sucrose is calculated as:

[tex]\begin{aligned}\rm mass &= \rm moles \times molar \; mass\\\\&= 0.500 \;\rm moles \times 342.3 \;\rm g/mol\\\\&= 171.15 \;\rm gm\end{aligned}[/tex]

Therefore, option A. 171 gm is the mass of sucrose.

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The correct answer is option A: 171 grams

Explanation: Got 90% on the quiz on edge and got this answer right

Answer:

a transverse electric wave and a magnetic transverse wave that are perpendicular and are moving in the same direction.

Explanation:

hope this helps!

Answer:

2.053812097286304 mol

Based on the observations of the students, the soil they observed appears to be a sandy soil.

What is Foamy?

Foamy refers to the presence of bubbles or foam in a liquid or substance. It can be caused by a variety of factors, such as agitation, the presence of certain chemicals, or the release of gases. In the context of the soil observation mentioned earlier, the lack of foamy reaction with vinegar suggests that the soil does not contain a significant amount of carbonates, which are a common cause of foaming when they react with acids.

Evidence to support this includes the fact that the soil is gritty when dry and sticks to their fingers when wet, which are both common characteristics of sandy soil. Additionally, the observation that the soil does not get foamy with vinegar suggests that it does not contain a lot of organic matter, which is another characteristic of sandy soil. Finally, the fact that the damp soil made a ball but it fell apart quickly suggests that the soil does not have a lot of clay, which is another characteristic of sandy soil.

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Answer:

Well, by definition,

molarity = moles of solute

               volume of solution

Explanation:

Now the moles of solute are a constant. The volume of solution MAY change substantially with increasing or decreasing temperature. In some calculations molality is used in preference, which is defined by the quotien

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Answer:

absorbed

Explanation:

Different colors of light can be reflected or absorbed and that determines color. For instance an object that absorbs every color but green will appear green to the human eye.

Triangles may be regarded as similar or congruent on the following basis;

1) Side angle side (SAS)

2) Side side side (SSS)

3) Angle Angle side (AAS)

A triangle is a three sided figure. The figures are not shown here. However, two triangle may be regarded as similar or congruent by the following conditions;

1) Side angle side (SAS)

2) Side side side (SSS)

3) Angle Angle side (AAS)

Since the triagles are not shown here, the similarity of the triangles can not be established.

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If a geologist drips a small amount of vinegar (acetic acid) onto a sample of dolomite, fizzing will occur because carbon dioxide is produced.

Effervescence observes whenever any gas tried to escape out from an aqueous solution, that's why CO₂ show effervescence.

Reaction between dolomite and acetic acid will be represented as:

MgCO₃ + 2CH₃COOH → CO₂ + H₂O + Mg(CH₃COO)₂

From the above reaction it is clear that carbon dixide gas is produced by showing the effervescence and fizzing behavior.

Hence, option (2) is correct.

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Answer:

B

Explanation:

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Yes, we can dissolve 35 moles of KMnO₄ into 500 mL of water to give a molarity of 70 M

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

Molarity = mole / Volume

Molarity = 35 / 0.5

Molarity = 70 M

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We can not dissolve 35 moles of potassium permanganate into 500 ml of water as it produces the solution with higher molarity than water have.

Molarity of any solution is define as the number of moles of solute present in per liter of the solvent as:

M = n/V

The molarity of the solvent, water, is the highest for aqueous solutions and molarity of 1000g of pure water in 1 liter is 55.5M

Given that,

On putting values, we get

M = 35/0.5 = 70M

Preparation of this solution is impossible.

Hence, KMnO₄ will not dissolve in the water as it produces solution with higher molarity than water.

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D. explosion

When a cracker is lit, a rapid response results in the development of large amount of energy of heat, light, and sound. Explosion is the term for such a reaction.

Answer:

D. Explosion

Explanation:

Here, we want to identify the type of combustion characterized by the given properties

From what we have, there is a sudden reaction that takes place as the cracker is ignited

The type of combustion here is called Explosion

It takes place suddenly with the evolution of light, heat, and sound upon ignition.

Hope this helps!

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