Im really bad at chemistry I’m so sorry :(

What is Hydrogen and hydrogen peroxide common element?

What is Chlorine and sodium chloride common element?

2-Chloro-2-Methylpropane has the chemical formula C4H9Cl and a molecular weight of 92.56 g/mol.

A graph depicting the relative abundance of the ions created from the molecule when it is ionised in a mass spectrometer is known as the mass spectrum of 2-chloro-2-methylpropane. The mass-to-charge ratio (m/z) of the ions is measured, and the relative abundance of each ion is plotted against its m/z value, to produce the spectrum. It is anticipated that the spectrum of 2-chloro-2-methylpropane will have a molecular ion peak at m/z = 108, which corresponds to the compound's intact molecular ion (M+). Depending on the circumstances of the ionisation process, additional peaks may also emerge, including a base peak and different fragment ions.

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Answer:

The study of the human body as a machine for the performance of work has its foundations in three major areas of study—namely, mechanics, anatomy, and physiology; more specifically, biomechanics, musculoskeletal anatomy, and neuromuscular physiology. Explanation:

Answer:

No, It will mean lot of rains but not every day

Explanation:

In wet tropical climates, the high clouds trap a lot of heat while balancing incoming and outgoing heat energy. When the number of heat trapping cloud remains very low, then the unstable cool air above the clouds cause lot of rain.

Hence, there will rain frequently but no everyday

Answer:

help me please help me

Explanation:

A tropical climate is a wet climate. Consider a city like Bogota, Colombia which has a tropical climate. Does a tropical climate being a wet climate mean that it will rain every day? Why or why not?

Answer:

Lithium Carbonite

Explanation:

Answer:

Lithium

Explanation:

The white solid  that forms when methyl salicylate is added to an aqueous solution of sodium hydroxide is sodium salicylate.

Sodium salicylate is a sodium salt of salicylic acid. It is a white solid that has a bitter taste and is highly soluble in water. Sodium salicylate is frequently utilized as a pain reliever and anti-inflammatory medication, as well as a fever reducer in humans. It has similar properties to aspirin, a closely related compound.Sodium salicylate is made by reacting salicylic acid with sodium hydroxide in aqueous solution. When a hydroxide ion from sodium hydroxide is added to a carboxylic acid, it reacts to form a salt with an anionic form. Salicylic acid is a carboxylic acid that reacts with sodium hydroxide to form sodium salicylate.

The reaction is shown below:

This is the balanced chemical equation for the reaction between salicylic acid and sodium hydroxide
Methyl salicylate + NaOH → Sodium salicylate + Water

Thus, the white solid that forms when methyl salicylate is added to an aqueous solution of sodium hydroxide is sodium salicylate.

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Option C, a more saturated fat is the product(s) for the hydrogenation of corn oil.

Organic molecules are frequently reduced or saturated by the process of hydrogenation, which is a chemical reaction between hydrogen (H2) and another substance or element. The process of incorporating hydrogen molecules into the various carbon-carbon bonds is known as hydrogenation. Saturated fats emerge from this process. Double bonds change into single bonds throughout this Saturated fats, and the melting point steadily increases.

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Answer:

The lattice energy decreases down the group and increases across the period, therefore, the lattice energy of LiF > lattice energy of LiI, and the lattice energy of NaCl < the lattice energy of AlCl₃

Explanation:

The given parameters are;

Compound \({}\)                                    Lattice Energy (kJ/mol)

LiF  \({}\)                                                     1030

NaCl  \({}\)                                                  788

MgCl₂  \({}\)                                                2326

LiI  \({}\)                                                       730

AlCl₃   \({}\)                                                  5376

Lattice is the energy that must be added in order to split one mole of a ionic solid compound into gaseous ions

Given that the force of attraction between charges is inversely proportional to the square of the distance separating the charges, we have that as the atomic radius increases progressively down the group, the lattice energy decreases, therefore, LiF which has a shorter inter nuclear distance than LiI due to fluorine, F, being higher up on the periodic table than iodine, I, has a greater lattice energy than LiI

Similarly, given that the atomic radius decreases across the period, and that sodium, Na, comes before aluminum, Al, as we move across period 3, of the periodic table, the inter nuclear distance between atoms of in NaCl is larger than the internuclear distances between the atoms of AlCl₃, as well as the presence of more chlorine atoms in AlCl₃ than in NaCl, the lattice energy of NaCl is smaller than the lattice energy of AlCl₃.

The percentage of oxygen in the female sex hormone estradiol (C_18H_24O_2) is 17.39%.

To calculate the percentage of oxygen in estradiol, we need to determine the molar mass of the molecule and the molar mass of the oxygen component.

The molar mass of estradiol (C18H24O2) can be calculated by summing the atomic masses of its constituent elements:

C: 18 * 12.01 g/mol = 216.18 g/mol

H: 24 * 1.01 g/mol = 24.24 g/mol

O: 2 * 16.00 g/mol = 32.00 g/mol

Total molar mass of estradiol = 216.18 g/mol + 24.24 g/mol + 32.00 g/mol = 272.42 g/mol

To determine the percentage of oxygen, we divide the molar mass of oxygen by the total molar mass of estradiol and multiply by 100:

Percentage of oxygen = (32.00 g/mol / 272.42 g/mol) * 100 ≈ 11.74%

Therefore, the percentage of oxygen in estradiol is approximately 11.74%.

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Answer:

A

Explanation:

The straight forward answer is the first one.

You should always answer that when reading the chemical make up of molecules. Let's look at some examples.

C8 H18

Consider the 8. It must be describing how many carbons there are. If it was meant for the hydrogen, then what what the 18 mean? You wouldn't know.

Now look at something a lot more complicated.

Mg3(PO4)2

Use the going left rule. That satisfies Mg doesn't it? There are 3 of them and 3 is correct.

The two at the end is also straightforward if you think about it. It must be telling you how many molecules are in the brackets. If that were not so, then you wouldn't be able to tell what it did. So there are 2 PO4

But you still have the 4 to deal with. Use the going left rule again. 4 must be telling you how many oxygens you have inside the brackets. There are 4 of them.

Skipping the step of determining the volume at the tip of the buret would result in an inaccurate measurement of the volume of the liquid used in the experiment.

What is molar mass?

Molar mass is the mass of one mole of a substance. A mole is a unit of measurement in chemistry that represents a specific number of particles,  also known as Avogadro's number

Determining the volume of the tip of the buret is essential for accurately measuring the volume of a liquid, as it affects the accuracy of the final molar mass calculation. If this step is skipped, the measured volume of the liquid would be incorrect, leading to an incorrect calculation of the molar mass of magnesium.

To understand how skipping this step would affect the final molar mass calculation, we need to consider the formula used to calculate the molar mass of magnesium:

Molar mass = (mass of magnesium) / (moles of magnesium)

To calculate the moles of magnesium, we need to know the volume of the liquid used in the experiment, as well as its concentration. If the volume of the liquid is incorrect due to not accounting for the volume of the tip of the buret, then the calculated moles of magnesium would also be incorrect.

This, in turn, would lead to an incorrect molar mass calculation, as the molar mass is calculated by dividing the mass of magnesium by the moles of magnesium. If the calculated moles of magnesium are incorrect, then the resulting molar mass calculation would also be incorrect.

Therefore, skipping the step of determining the volume at the tip of the buret would result in an inaccurate measurement of the volume of the liquid used in the experiment, ultimately leading to an inaccurate calculation of the molar mass of magnesium.

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Answer:

Molarity of HCl = 1.6M

Explanation:

The chemical reaction equation is;

HCl(aq) + NaOH(aq) —> NaCl(aq) + H2O(l)

Now, molarity = number of moles/volume

Thus, for NaOH, we have;

Number of moles = molarity × volume = 2M × (20/1000) L

Number of moles = 0.04 moles

Using the coefficients in the chemical equation above, we can find the corresponding number of moles for HCl.

Number of moles of HCl = 0.04 moles NaOH × (1 mole of HCl/1 mole of HCl) = 0.04 moles of HCl

Thus;

Molarity of HCl = 0.04/(25/1000)

Molarity of HCl = 1.6M

The correct statements are that a rock is considered an ore when it contains at least one metallic mineral in sufficient amounts to be extracted profitably and when it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably.

When it contains at least one metallic mineral in sufficient amounts to be extracted profitably.

When it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably.

Step-by-step explanation:

When it occurs in sufficient amounts to be used to build roads and buildings: This statement is incorrect. Rocks that are used for construction purposes, such as limestone or sandstone, are not considered ores unless they also contain economically valuable minerals.

Only when it contains lead: This statement is incorrect. Ores are not limited to containing only lead. Ores can contain various metallic minerals, not just lead.

When it contains at least one metallic mineral in sufficient amounts to be extracted profitably: This statement is correct. Ores are rocks that contain valuable metallic minerals in concentrations that make extraction economically feasible. These minerals can include gold, silver, copper, aluminum, zinc, and many others.

Only when it contains iron: This statement is incorrect. While iron ores are commonly known and widely used, ores are not limited to containing only iron. There are numerous other metallic minerals that can be extracted profitably from rocks.

When it contains fluorite or sulfur minerals in sufficient amounts to be extracted profitably: This statement is correct. Fluorite and sulfur are examples of non-metallic minerals that can be extracted profitably from rocks, and if a rock contains these minerals in sufficient quantities, it can be considered an ore.

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Answer:

Rust is brittle and fragile, while iron is solid and malleable and oxygen is a gas in its natural state. Rust is orange in color while iron is silver-gray and oxygen is colorless.  

Explanation:

Physical properties are traits that can be observed. Physical traits include color, malleability, texture, odor, etc.

The new pressure of the gas is 2.11atm when the volume decreases to 0.473L

We can use the formula for the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin. Since the number of moles and the temperature are constant, we can rewrite the formula as \(P_{1}V_{1}  = P_{2}V_{2}\), where \(P_{1}\)is the initial pressure, \(V_{1}\) is the initial volume, \(P_{2}\) is the new pressure, and \(V_{2}\) is the new volume.

In this case, we know that the initial volume is 1.00L and the initial pressure is 1.0atm (which is the standard pressure). We also know that the new volume is 0.473L. Using the formula above, we can solve for the new pressure:

\(P_{1}V_{1}  = P_{2}V_{2}\)

1.0atm x 1.00L =\(P_{2}\) x 0.473L

\(P_{2}\) = (1.0atm x 1.00L) / 0.473L

\(P_{2}\) = 2.11atm

Therefore, the new pressure of the gas is 2.11atm when the volume decreases to 0.473L.

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Answer:

wait what?

Explanation:

brainliest pls

Answer:

Increasing the H+/H3O+ will decrease the pH, while increasing the OH- ions will increase the pH

Explanation:

so pH=-log(H), which means that the smaller H gets to 0, the more the pH rises. The larger the H+ gets, the smaller the pH
if H is 1, then pH is 0
if H is 0.1, then pH is 1
if H is 0.01, then pH is 2
and so on
if H is 0.00000000000001, then the pH is 14
When OH goes up, H goes down, so
if OH is 0.00000000000001, then the ph is 0
if OH is 0.0000000000001, then the pH is 1
and so on
If the OH is 1, then the pH is 14

IUPAC is the nomenclature approach used for naming compounds. The compounds are ethane, butane, and butene.

IUPAC is the nomenclature method of the organic compounds that are universal and is recommended by the International union so that the names of the same chemical species are constant and ubiquitous all over.

The first compound has a single bond and two carbons hence ethane, the second compound has a single bond and four carbons and hence butane, and the third compound has one double bond and four carbon atoms and hence butene.

Therefore, the compounds are ethane, butane, and butene.

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Answer:

Explanation:

Molecular weight of Al: 27

Molecular weight of O: 16

Percentage composition of Al by weight in Al2O3

= (27*2) / (27*2 + 16*3)

= 0.5294

In 200 grams of Al2O3, there are

= 200*0.5294

= 105.88 grams of Al

77.18 grams of Al was produced in the experiment.

Percent yield for the experiment

= product mass / reactant mass * 100%

= 77.18 / 105.88 * 100%

= 72.89%

Answer:

Environment mainly consists of atmosphere, hydrosphere, lithosphere and biosphere. But it can be roughly divided into two types such as (a) Micro environment and (b) Macro environment. It can also be divided into two other types such as (c) Physical and (d) biotic environment.

Explanation:

Answer:

high

Explanation:

Answer:(A)

Explanation:

The percent by volume of ethanol in a solution with 17 ml ethanol in 48 ml of solution is 35.4%.

Weight/volume percentage, volume/volume percentage, or weight/weight percentage are all possible percent answers. In each instance, the volume or weight of the solute divided by the total volume or weight of the solution yields the concentration in percentage.

It is also relevant to the numerator in weight units and the denominator in volume units and is known as weight/volume percent. This is true not only for a solution where concentration must be represented in volume percent (v/v%) when the solute is a liquid.

Volume of ethanol = 17 mL.

Volume of the solution = 48mL

Percent by volume of ethanol = \(\frac{Volume \ of \ ethanol }{Volume \ of \ Water + Volume \ of \ ethanol}\)

= 17 / 48 x 100

= 0.354

= 35.4 %.

Therefore, the percent volume of ethanol in this solution is 35.4%.

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The antiseptic may affect the results of tests for bilirubin uric acid is Povidone-iodine.

Polyvinylpyrrolidone (povidone, PVP) and elemental iodine combine chemically to form the stable compound known as povidone-iodine. On a dry basis, it has a 9.0% to 12.0% available iodine content. H. A. Shelanski and M. V. Shelanski found this particular complex in 1955 at the Industrial Toxicology Laboratories in Philadelphia.

The compound was discovered to be less harmful to mice than tincture of iodine during in vitro tests to exhibit anti-bacterial efficacy. Clinical tests on humans revealed that the medication outperformed competing iodine formulations. Povidone-iodine was marketed right away and has since taken over as the most widely used iodine antiseptic.

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Povidone-iodine is an antiseptic that may affect the results of tests for bilirubin and uric acid. Povidone-iodine is a commonly used antiseptic that can be applied topically to the skin to reduce the risk of infection during medical procedures. However, it can also interfere with certain laboratory tests, including tests for bilirubin and uric acid.

Bilirubin is a yellow pigment that is produced when red blood cells break down, and it is excreted by the liver. Uric acid is a waste product that is produced when the body breaks down purines. Both bilirubin and uric acid can be measured through laboratory tests to help diagnose certain medical conditions.

However, povidone-iodine can interfere with these tests by reacting with the substances being tested, leading to inaccurate results. It is important for healthcare professionals to be aware of the potential for povidone-iodine to affect laboratory test results and take appropriate measures to minimize this risk, such as avoiding its use immediately prior to testing.

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Answer:

X

Explanation:

Letter X is mitochondria. The mitochondria produces carbon dioxide, water, and ATP energy during cellular respiration.

Answer:

Use the formula C1V1 = C2V2

We have the initial concentration and volume

C1= 0.5 M

V1 = 1.00 L

We also have the final volume

V2 = 2.00L

C2 = ?

Rearrange the formula to find C2:

(C1 x V1) / V2 = C2

(0.5 x 0.1) / (2) = 0.25 M

Therefore the concentration of the final solution is 0.25 M.  

There are 4 significant figures in the measurement of the weight of the nugget,mass of the nugget in kilograms is 9.15 kg,volume is 474.09 cm³,melting point of gold in degrees Fahrenheit and kelvins is 1064°C and 1948°F.

Significant figures are used for establishment  of a number which is presented in the form of digits. These digits give a meaningful representation  to the numbers.

The significant figures are the significant digits which convey the meaning according to the accuracy. These provide precision to the numbers and hence are called as significant numbers.

Volume is found out as, mass/density which 9150/19.3=474.09 cubic centimeters.

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Answer:

I think C

Explanation:

don't forget to follow rate like

Answer:

36 minutes

Explanation:

You take 165/3= 55 pages per hour.

Take 198-165 = 33 pages left of the book

Take 33/55 = .6 hrs to finish the book.

Take 60(minutes in an hour)*.6= 36 minutes