a cube has a length of 1.02 cm and a mass of .001012 kg what is its density ​

The correct abbreviation for each metric unit is:

Kilogram - kg, Milliliter - ml, Kilometer- Km, Meter- m, Millimeter - mm, Centimeter - cm, Gram - g,  Liter - L, and Milligram - mg.

The metric system can be described as a system of measurement that succeeded the decimalized system based on the meter.  Each of the fundamental dimensions can be expressed by a single base unit of measure.

For quantities derived from the base units of the system, units derived from the base units are used such as the square meter being the derived unit for the area, a quantity derived from length.

Metric units can be described as units based on the meter, gram, or second and decimal multiples or sub-multiples of these. The units of the International System of Units (SI). By extension, they involve units of electromagnetism from the CGS units and SI units systems.

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Answer:

Soil contains minerals such as Iron, Zinc, Nitrogen compounds, etc. that are all essential to sustaining life. It also holds water and makes it available for plants to use. Soil also contains ores from which we can extract metals such as iron, copper, gold, and aluminum.

(Hope this helps) Sky

The molecular formula of compound X is C₅H₁₀O₄.

To determine the molecular formula of compound X, we need to convert the mass percentages of each element into their respective mole ratios. Here's how you can calculate the molecular formula:

Step 1: Convert the mass percentages to mass values.

To make calculations easier, let's assume we have 100 grams of compound X. This means we have:

Carbon: 44.77 grams (44.77% of 100g)

Hydrogen: 7.52 grams (7.52% of 100g)

Oxygen: 47.72 grams (47.72% of 100g)

Step 2: Convert the mass values to moles.

To convert the mass of each element to moles, we divide by their respective atomic masses:

Carbon: 44.77g / 12.01 g/mol = 3.726 moles

Hydrogen: 7.52g / 1.01 g/mol = 7.435 moles

Oxygen: 47.72g / 16.00 g/mol = 2.9825 moles

Step 3: Find the simplest mole ratio.

Divide each mole value by the smallest number of moles (in this case, the smallest is 2.9825):

Carbon: 3.726 moles / 2.9825 moles = 1.25 (approximately)

Hydrogen: 7.435 moles / 2.9825 moles = 2.491 (approximately)

Oxygen: 2.9825 moles / 2.9825 moles = 1.0

Step 4: Adjust the ratios to the nearest whole number.

Since we want to find the molecular formula, we need to adjust the ratios to the nearest whole number. In this case, we'll multiply all the ratios by 4 to obtain whole numbers:

Carbon: 1.25 × 4 = 5

Hydrogen: 2.491 × 4 = 10

Oxygen: 1.0 × 4 = 4

Step 5: Write the molecular formula.

The molecular formula of compound X is determined by the whole number ratios we obtained:

C₅H₁₀O₄

Therefore, the molecular formula of compound X is C₅H₁₀O₄.

The completed question is given as,

Compound X has a molar mass of 134.12 gmol-' and the following composition: element mass % carbon 44.77% hydrogen 7.52% oxygen 47.72% Write the molecular formula of X.

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The pressure that supports a 713 mm column of mercury can be used to determine the height of a column of methanol.

The relationship between pressure and height in a liquid column is described by the equation P = ρgh, where P is the pressure, ρ is the density of the liquid, g is the acceleration due to gravity, and h is the height of the column.
To find the height of the methanol column, we need to know the density of methanol. The density of methanol is approximately 0.791 g/mL.

Let's assume that the density of mercury is 13.6 g/mL. Using the equation P = ρgh, we can calculate the height of the methanol column as follows:
(713 mm) * (0.791 g/mL) * (9.8 m/s^2) / (13.6 g/mL) = approximately 311 mm.
Therefore, a pressure that supports a 713 mm column of mercury would support a column of methanol approximately 311 mm in height.

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Answer:

A

Explanation:

Of the main group elements, fluorine has the highest electronegativity (EN = 4.0) and cesium the lowest (EN = 0.79). This indicates that fluorine has a high tendency to gain electrons from other elements with lower electronegativities. We can use these values to predict what happens when certain elements combine.

The density of a substance is defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as:

Density = mass / volume

For example, unknown liquid has a mass of 30.8 g, and a volume of 31.5 mL. What is the density of this liquid?

We can obtain the density as follow:

Density = mass / volume

Density of liquid = 30.8 / 31.5

Density of liquid = 0.98 g/mL

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Answer:

c i think

Explanation:

Explanation:

I Would Determine Mass,Volume And Weight

Answer:

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Answer:

\(C_{9.042}H_{17.958}\)

Explanation:

(This exercise has been written in Spanish and for that reason explanation will be held in such language)

Por la definición del Número de Avogadro, un mol del compuesto contiene \(6.022 \times 10^{23}\) moléculas. La masa de un mol se determina mediante regla de tres simple:

\(x = \frac{6.022\times 10^{23}\,molecules}{1\,molecule} \times (2.1\times 10^{-22}\,g)\)

\(x = 126.462\,g\)

Las participaciones másicas del carbono y el hidrógeno son, respectivamente:

\(m_{C} = 0.858\cdot (126.462\,g)\)

\(m_{C} = 108.504\,g\)

\(m_{H} = 126.462\,g - 108.504\,g\)

\(m_{H} = 17.958\,g\)

Ahora, el número de moles de cada elemento es calculado a continuación:

\(n_{C} = \frac{108.504\,g}{12\,\frac{g}{mol} }\)

\(n_{C} = 9.042\,mol\)

\(n_{H} = \frac{17.958\,g}{1\,\frac{g}{mol} }\)

\(n_{H} = 17.958\,mol\)

La fórmula molecular del hidrocarburo es:

\(C_{9.042}H_{17.958}\)

Answer:

given

the sequences are;5,11,17,23

now we have difference between first series and second seris is 6

so,tn=a+(n_1)×d (where a=1stseries,n is the

termand d is diff betwn 1st

and 2nd series)

so,tn=5+(n_1)×6

=5+6n_6

=6n_1...........n th term

now;

t1=6×1_1=5

t2=6×2_1=11

t3=6×3_1=17

t4=6×4_1=23

therefore ; the nth term of the given sequence is ; 6th_1.

Using a flask that is too large for the amount of solution may result in inefficient distillation due to decreased surface area and increased evaporation time. An appropriately sized flask for distilling approximately 100ml of solution would be around 125-250ml.

When a flask that is significantly larger than the amount of solution is used for distillation, there are a few potential problems. Firstly, the surface area available for evaporation is reduced, as the solution spreads out thinly over the larger flask. This can lead to slower evaporation and longer distillation times. Additionally, the large headspace in the flask can result in increased loss of volatile compounds through vapor escape, which may affect the efficiency and yield of the distillation process.

To address these issues, an appropriately sized flask would be one that allows for efficient evaporation and maintains a suitable surface area for distillation. In this case, a flask in the range of 125-250ml would be more suitable for distilling approximately 100ml of solution. This size ensures a better ratio between the solution volume and flask capacity, facilitating effective heat transfer, and reducing the loss of volatile components during the distillation process.

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Answer:

407.7c

Explanation:

200.0C = 0.325 atm

400.0C = 0.650 atm

407.7C = 0.675 atm

A sample of neon gas at 200.0C has a pressure of 0.325 atm.  The temperature is 407.7 C is by the pressure reaches 0.675 atm.

There are three basis gas laws which relates the pressure, temperature, and volume of the gas.

The temperature and pressure increase is given this.

200.0C = 0.325 atm

400.0C = 0.650 atm

407.7C = 0.675 atm

Thus, the correct option is 407.7C = 0.675 atm.

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Answer:

distance traveled per unit of time.

Answer: If more than one variable is changed in an experiment, scientist cannot attribute the changes or differences in the results to one cause. By looking at and changing one variable at a time, the results can be directly attributed to the independent variable.

325 g of water would be need to make an 89% plutonium aqueous solution by mass, if the total solution is 3500 grams.

This problem is solved by using the concept of total mass percentage

Total mass percentage can be given as

Mass percentage = sum of mass percentage of elements in solution.

100% = 89% of plutonium aqueous solution by mass+ x V of water solution by mass

(100 - 89)% = x% of water solution by mass

11 % = x% of water solution by mass

mass percentage of water =( mass of water / mass of total solution) × 100

11 / 100 = mass of water / mass of total solution

mass of water =( 11/ 100) × 3500

= 325 g.

Thus, we concluded that 325 g of water would be need to make an 89% plutonium aqueous solution by mass, if the total solution is 3500 grams.

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Answer:

CH₄  +  2O₂   →   2H₂O + CO₂

Explanation:

From the given problem;

  White balls  = hydrogen

  Black balls  = carbon

  Gray balls  =  oxygen

 Equation of the reaction:

1 carbon atom surrounded by 4 hydrogen + 2 oxygen molecules gives two hydrogen atoms bonded to one oxygen + 1 carbon atom bonded to two oxygen

            CH₄  +  2O₂   →   2H₂O + CO₂

The reaction above is balanced.

Using the given mass of the compound (0.520 g) and the calculated moles, we can determine the molar mass of the compound.

To find the molar mass of the compound, we can use the formula:

ΔT = Kf * m

where ΔT is the freezing point depression, Kf is the cryoscopic constant (in this case, 3.90 °C/m), and m is the molality of the solution.

First, we need to calculate the molality (m) of the solution:

m = moles of solute / mass of solvent (in kg)

The mass of the solvent (lauric acid) is given as 4.62 g. Since the unknown compound is a solute, we need to convert its mass to moles:

moles = mass / molar mass

Given that the mass of the unknown compound is 0.520 g, we can now calculate the moles of the compound.

Next, we convert the mass of the solvent to kg by dividing by 1000:

mass of solvent (lauric acid) = 4.62 g / 1000 = 0.00462 kg

Now we can calculate the molality:

m = moles of solute / mass of solvent = (moles of the compound) / (mass of solvent)

Finally, we can use the freezing point depression formula to find the molar mass of the compound:

ΔT = Kf * m

Substituting the given values:

4.20 °C = 3.90 °C/m * m

Now solve for m:

m = (4.20 °C) / (3.90 °C/m)

Once we have the molality, we can calculate the moles of the compound:

moles = molality * mass of solvent (in kg)

Finally, we calculate the molar mass:

molar mass = mass of solute / moles of solute

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The classification of the reactions are;

water → hydrogen + oxygen - decomposition

iron + oxygen → iron oxide - Oxidation

The term chemical reaction has to do with an interaction that occurs between the reactants and the products so that  new substance can be formed. This is how we know that a chemical change has occurred.

We are here to sort the reactions according to the kind of changes that they represent. Recall that we do have several kinds of reactions that do take place and they are classified based on the kind of changes that are taking place there.

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Answer:

a. Physical model

Option c. 200. The number of parent atoms remaining (on average) after two half lives is 200.

The idea of half-life in radioactive rot is utilized to decide how much time it takes for half of the parent iotas to rot into stable posterity particles. After one half-life, a big part of the parent iotas will have rotted, leaving the other half. After two half-lives, the leftover half will have rotted, leaving one-fourth of the first measure of parent particles. (All things considered).

This is on the grounds that portion of the first 800 would have rotted after the principal half-life, leaving 400, and afterward 50% of those would have rotted after the last part life, leaving 200 parent molecules.

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The half-life of carbon-14 is about 5,730 years. if an ancient cave painting was found to have about 25% of the carbon-14 of a now-living object,the cave painting is about 11,460 years old plus or minus a few years.

The half-life of carbon-14 is a measurement of the time it takes for half of the carbon-14 in a sample to decay into nitrogen-14. After another half-life, half of the remaining carbon-14 will have decayed, leaving only a quarter of the original amount. Therefore, if an ancient cave painting has 25% of the carbon-14 of a now-living object, it has undergone two half-lives.
Using the half-life of carbon-14 (5,730 years), we can calculate the age of the cave painting. First, we determine the length of one half-life by multiplying 5,730 years by 2 (since the cave painting has undergone two half-lives), which gives us 11,460 years. This means that the cave painting is at least 11,460 years old.
However, we can narrow down the age further. If we assume that the now-living object has the same amount of carbon-14 as a typical living organism (which is a reasonable assumption), then we can use the known half-life of carbon-14 to calculate the number of half-lives that have occurred since the painting was created.

Taking the natural logarithm of 0.25 (since the painting has 25% of the carbon-14 of a now-living object) and dividing it by the natural logarithm of 0.5 (since each half-life reduces the amount of carbon-14 by half) gives us a result of approximately 2.0. Therefore, the cave painting is about 11,460 years old plus or minus a few years.

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Answer:

CLIMB A MOUTAIN

Explanation:

B

Other elemental substances in that they consist of two atoms of the same element, bonded together.

Diatomic elements are chemical elements that exist in the form of two atoms held together by covalent bonds. The most common elements that exist as diatomic molecules are hydrogen, oxygen, nitrogen, fluorine, chlorine, bromine, and iodine. These elements are found in nature and play important roles in the formation of compounds used in everyday life.

This bond is usually covalent in nature, and the two atoms form a stable molecule. This type of molecule is very stable and present in the form of gas, at room temperature and pressure. Examples of diatomic elements are hydrogen, oxygen, nitrogen, fluorine, chlorine, and bromine. Due to the fact that these elements are already in a stable, two-atom form, they exhibit different chemical and physical properties than other elements. For example, diatomic oxygen is highly reactive and can easily combine with other elements, while diatomic nitrogen is relatively inert. This difference in reactivity is due to the fact that the two atoms in the diatomic form share electrons more easily than atoms in other elemental forms.

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The final alcohol product form after the following two-step reaction, including all lone pairs and formal charges is present is 2-methylpropan-2-ol, present in above figure 3.

We have a two step reaction, as present in above figure 1. We have to draw the alcohol product formed in above reaction by completing the two steps of reaction.

Step 1 : When a 3,3-dimethylbutan-2-one reacts with trifluoro peracetic acid, a formal insertion of oxygen take place to yield a carboxylic ester, tert-butyl acetate. This is step one. Now, the most electron rich alkyl group ( more substituted carbon) migrates first. The general migration order is tertiary alkyl > cyclohexyl > secondary alkyl > benzyl > phenyl > primary alkyl > methyl > > H. For substituted aryl, p-MeO-Ar > p-Me-Ar > p-Cl-Ar > p-Br-Ar.

Step 2 : Esters undergo hydrolysis in acidic media produces alcohols. Thus, tert-butyl acetate undergo hydrolysis in presence of hydro sulphuric acid and produce 2-methylpropan-2-ol and acetic acid. Hence, the final alcohol product is

2-methylpropan-2-ol.

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Complete question:

The above figure complete the question.

There are 1.31 x 1022 bromide ions in 2.00 g of \(MgBr_2\).

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Answer:

a) 0.15

Explanation:

A concentração de sacarose é 0,15 g / l no etanol. O Brasil está produzindo etanol em grandes quantidades que é usado como combustível em veículos e indústrias. Este etanol é produzido a partir da cultura da cana-de-açúcar e o Brasil é o segundo maior produtor mundial com cerca de 34,45 bilhões de litros em 2019. Os Estados Unidos da América e o Brasil produzem cerca de 84% do etanol mundial.

In 1803 Dalton discovered that oxygen combined with either one or two volumes of nitric oxide in closed vessels over water and this pioneering observation of integral multiple proportions provided important experimental evidence for his incipient atomic ideas.

In closed vessels over water, Dalton observed in 1803 that oxygen interacted with either one or two volumes of nitric oxide. This ground-breaking observation of integral multiple proportions offered crucial experimental support for his developing atomic theories.

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Answer: acid rain

Explanation: Acid rain is one way in which rocks can be chemically weathered. It can harm forests and crops, damage bodies of water, and contribute to the damage of statues and buildings. In this activity you will simulate the chemical weathering of limestone, which is a soft, sedimentary rock that reacts easily to acid rain.