What is the gram formula mass of one mole of sodium hydroxide (NaOH)?

Drift nets are a problem because when they are lost in the sea, they may continue to kill many animals.

This is referred to as a fishing technique where nets, called drift nets, hang vertically in the water column and are arranged to drift with the tide or current  without being anchored to the bottom.

In a situation whereby they are lost or left,  they may continue to kill many animals in what is referred to as ghost fishing which may lead to overexploitation and a disruption in the ecosystem thereby making it the correct choice.

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Answer:

False

Explanation:

Hope I helped! Love, Josie.

Explanation:

Rate = 84mL/s

A minute has 60 seconds;

Rate = 84mL/s * 60s = 5040 mL/minute

Volume of blood in a minute = Rate * Number of beeats per minute

Volume = 5040 * 72 = 362880 mL

How long to circulate 3500ml?

1 minute = 362880mL

x = 3500 mL

x = 3500mL min / 362880mL

Math Expression:

Time to circulate 3500ml of blood (min) = 3500ml * 1 minute / Volume of blood at a rate of 84ml/s and 72 beats per minute (ml)

Answer:

Cl^-<NO3^-<H2O<F^-<CN^-

Explanation:

When we talk about base strength we are referring to how easily a chemical specie accepts protons.

The greater the ability of a specie to accept H^+, the greater its base strength.

The order of increasing base strengths of the species listed are shown in the answer above.

Answer:

flammability, toxicity, acidity, reactivity , and heat of combustion.

Explanation:

Answer:

Its the banana one

Explanation:

Answer:

Electrons in a hydrogen atom must be in one of the allowed energy levels. If an electron is in the first energy level, it must have exactly -13.6 eV of energy.

...

Energy Levels of Electrons.

Energy Level Energy

1 -13.6 eV

2 -3.4 eV

3 -1.51 eV

4 -.85 eV

Answer:

Molar mass = 12.51 g/mol

Explanation:

V = 3L

P = 1.25 atm

T = 20 C = 20 + 273 = 293 K (Upon conversion to kelvin temperature)

n =?

m = 1.95g

Molar mass = ?

The variables are related by the follwing equation;

pV = nRT

where r = gas constant = 0.0821 L atm K−1

Solving for n, we have;

n = pV / RT

n = (1.25 * 3 ) / (0.0821 * 293)

n = 3.75 / 24.0553 = 0.1559 mol

The relationship between number of moles, n and molar mass is given as;

n = mass / molar mass

Molar mass = Mass / n = 1.95 / 0.1559

Molar mass = 12.51 g/mol

Answer: A. 212

Explanation:

Answer:

d) chlorine

Explanation:

because it favors gaining electrons than losing , its a nonmetal

Answer:

A :)

Explanation:

Changing only one factor in an experiment is important because it allows you to isolate the effects of that particular factor on the outcome of the experiment. This makes it easier to identify the relationship between the factor you are testing and the outcome, and to draw conclusions about cause and effect. If you change multiple factors at the same time, it can be difficult to determine which factor is responsible for any changes you observe in the outcome, and your results may be less reliable. By keeping all other factors constant and only changing the one factor you are interested in, you can more accurately determine the effect of that factor on the outcome of the experiment.

Answer: If you change multiple factors in an experiment, then you wouldn't know which factor is responsible for any changes.

Explanation:

If something changes when you change only one factor in an experiment, then you can easily note down the cause of said change.

The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.

The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.

Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.

Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.

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An electron has a negative charge.

The charge of an electron is a fundamental property of the particle, and it is denoted by the symbol "e." The magnitude of the charge of an electron is approximately 1.602 × 10^-19 coulombs (C). This value is considered the elementary charge and is used as a reference for other charges. The charge of an electron plays a significant role in determining the behavior and interactions of atoms and molecules. It is opposite in sign to the charge of a proton, which is positive. The electron's charge allows it to interact with other charged particles, such as protons and ions, through electrostatic forces. Electrons are subatomic particles that orbit the nucleus of an atom in specific energy levels or orbitals. They contribute to the overall stability and chemical properties of atoms and participate in chemical bonding and reactions. The movement of electrons between atoms is what enables the formation of chemical bonds and the sharing or transfer of electrons to create ions. In summary, the charge of an electron is negative, and it plays a fundamental role in the structure and behavior of atoms and molecules.

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Answer:

1.E25 it is the answer the answer to mass of 1×10^25 molecules of water​

Explanation:

this is just EXPLINATION find your answer using this

first divide the number of molecules by Avogadro's number 6.022*10^25

you will

l get no. of Moles of water

multiply the no. of Moles with mass of 1 Mole of water 18g per mole

if get answer you comment

you should try on your own you will understand better

Answer:

First, we need to determine the molar mass of HCl.

The molar mass of HCl = the mass of hydrogen (1.008 g/mol) + the mass of chlorine (35.45 g/mol) = 36.45 g/mol.

Next, we can use Avogadro's number (6.02 x 10^23 molecules/mol) to convert the number of molecules to moles:

6.02 x 10^24 molecules / 6.02 x 10^23 molecules/mol = 10 moles

Finally, we can use the molar mass to convert moles to grams:

10 moles x 36.45 g/mol = 364.5 grams

Therefore, the mass of 6.02 x 10^24 molecules of HCl is 364.5 grams.

Just Note the below follow the below principle

\(\boxed{\sf SCLA}\)

#1

\(\\ \sf\longmapsto Ar<Ca^{2+}<K^+Cl^-<S^{2-}\)

#2

\(\\ \sf\longmapsto Fe^{2+}<Fe^+<Fe\)

#3

\(\\ \sf\longmapsto Na<K<Rb\)

#4

\(\\ \sf\longmapsto B<C<N<O<F\)

Acid–base reaction is other wise known as neutralization reaction. This is a reaction in which an acid reacts with a base to produce salt and water only.

Considering the options given in the question above, only option A fits into the discription of an acid base reaction as the product contains salt (NaBr) and water (H₂O) only.

Thus, option A is the right answer to the question.

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To determine the density and identity of the metal, we need to first calculate the volume of the metal object, and then use its mass and volume to calculate the density.

The volume of the metal object can be calculated by measuring the change in the volume of the water in the graduated cylinder before and after the object was placed in it. The difference between the final volume (106.2 mL) and the initial volume (100.0 mL) is equal to the volume of the metal object.

Volume of metal object = final volume - initial volume

Volume of metal object = 106.2 mL - 100.0 mL

Volume of metal object = 6.2 mL

Next, we can calculate the density of the metal using the formula:

Density = mass / volume

Substituting the values we have:

Density = 16.7 g / 6.2 mL

Density = 2.69 g/mL

The density of the metal is 2.69 g/mL.

To identify the metal, we can compare its density to the densities of known metals. A quick search shows that the density of aluminum (Al) is around 2.7 g/mL, which is close to the calculated density of the metal in question. Therefore, it is possible that the metal object is made of aluminum. However, we cannot be certain without further testing.

Answer:

Final pressure = 6 atm

Final volume = 1.1 L

Final temperature = 100 K

Explanation:

We are given;

Initial Pressure; P1 = 2 atm

Initial volume; V1 = 3.3 L

Initial temperature; T1 = 27° C + 273 = 300 K

Final pressure; P2 = 6 atm

We will use Boyles law to get the final volume.

P1V1 = P2V2

V2 = (P1 × V1)/P2

P2 = (2 × 3.3)/6

V2 = 1.1 L

We can use Charles law to find the final temperature.

V1/T1 = V2/T2

T2 = (V2 × T1)/V1

T2 = (1.1 × 300)/3.3

T2 = 100 K

Dehydration of the process is linked to a decrease in entropy. correct option is (A).

Entropy is a measurement of a system's disorganization. It is an extended attribute of a thermodynamic system, which means that the amount of matter in the system affects its value. Entropy is frequently represented in equations by the letter S and is measured in joules per kelvin.

By combining several molecules into one, a dehydration reaction lowers the system's entropy. On the other hand, entropy is raised by catabolic, depolymerizing, and hydrolytic activities that break down molecules into smaller parts.

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The quantity of heat required to convert the ice to water is 5048.4 J.

The quantity of heat required to convert the ice to water is calculated as follows;

Q = n∆Hfus

where;

The number of moles of the ice is calculated as follows;

n = m/M

where;

M is molar mass of water (H2O) = 18 g/mol

n = 15.1/18

n = 0.84 mole

Q = 0.84 x 6.01 x 10³

Q = 5048.4 J

Thus, the quantity of heat required to convert the ice to water is 5048.4 J.

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Answer:

c

Explanation:

I hope this may help you guys

The standard deviation of the sample is 0.579, rounded to the correct number of significant figures.

To calculate the standard deviation of the sample, we need to follow these steps:

To find the mean, we sum up all the data points and divide by the number of data points. Let's calculate it:

(3.09 + 4 + 2.775 + 2.5 + 3.80) / 5 = 16.165 / 5 = 3.233

To do this, we subtract the mean (3.233) from each data point and square the result:

(3.09 - 3.233)^2 = 0.020049

(4 - 3.233)^2 = 0.586489

(2.775 - 3.233)^2 = 0.209025

(2.5 - 3.233)^2 = 0.537289

(3.80 - 3.233)^2 = 0.323329

To find the variance, we sum up the squared differences from step 2 and divide by the number of data points:

(0.020049 + 0.586489 + 0.209025 + 0.537289 + 0.323329) / 5 = 1.676181 / 5 = 0.3352362

√0.3352362 = 0.579 (rounded to three significant figures)

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The United States did not want to spend money on the introduction of metric system because it is costly and waste of time.

In 1866, the United States Congress authorized the use of the metric system in the country and about a decade later America became one of  signatory nations to the Treaty of the Meter. The biggest reasons the  United States hasn't adopted the metric system are due to time and money. When the Industrial Revolution began in the country, expensive manufacturing industries became a main source of American jobs and consumer products so the United States did not want to spend money on the introduction of metric system. About two years later, Congressman Fred Albert Britten of Illinois introduced a metric-standards bill. In the bill, the idea was to keep the American standard names for units of measure and adjust their amounts to equal their closest metric system.

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Answer:

the molar mass of Mg(NO3)2

the mass of the water added the density of the Mg(NO3)2

the volume of water used

Calculate the number of moles of Mg(NO3)2 used to make up this solution. 42.0 g of Mg(NO3)2 is equivalent to___ mol Mg(NO3)2.

Now calculate the molarity of the solution, giving your answer to the correct number of significant digits.

Molarity of Mg(NO3)2 = ___M

The partial pressure of CO₂ in the fuel combustion vessel at 468.2 K and a volume of 25.0 L is approximately 1.66 atm.

To determine the partial pressure of CO₂ in the fuel combustion vessel, we need to use the ideal gas law and consider the moles of CO₂, the temperature, and the volume of the vessel.

First, let's calculate the moles of CO₂ using the given mass and the molar mass of CO₂. The molar mass of CO₂ is 44.01 g/mol.

Moles of CO₂ = mass of CO₂ / molar mass of CO₂

= 60.0 g / 44.01 g/mol

≈ 1.36 mol

Next, let's calculate the total moles of gas in the vessel. We have 7.30 mol of uncombusted fuel and we need to consider the moles of water vapor as well.

Total moles of gas = moles of CO₂ + moles of uncombusted fuel + moles of H₂O

= 1.36 mol + 7.30 mol + 82.1 g H₂O / molar mass of H₂O

The molar mass of H₂O is 18.015 g/mol.

Moles of H₂O = 82.1 g / 18.015 g/mol

≈ 4.56 mol

Total moles of gas = 1.36 mol + 7.30 mol + 4.56 mol

≈ 13.22 mol

Now, let's use the ideal gas law, PV = nRT, to find the partial pressure of CO₂. Rearranging the equation, we have P = nRT/V, where P is the partial pressure, n is the number of moles, R is the ideal gas constant (0.0821 L·atm/(mol·K)), T is the temperature in Kelvin, and V is the volume.

Plugging in the values:

P = (1.36 mol × 0.0821 L·atm/(mol·K) × 468.2 K) / 25.0 L

≈ 1.66 atm

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The reaction is spontaneous under conditions of low pressure and high temperature

We can say that a reaction is spontaneous when we know that the reaction is able to go on on its own. This implies that there is a mnimum energy that is required for the reaction to proceed.

The reaction is thus a sort of a self propagating system that goes on freely of its own accord.. We can see that what is going on here is the decomposition of the nitrogen V oxide gas as shown.

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a. Atomic number 16 is Sulfur its electronic configuration is:  

 1s2 2s2 2p6 3s2 3p4

b. Atomic number 11 is Sodium its electronic configuration is:

 1s2 2s2 2p6 3s1

c. Atomic number 32 is Germanium its electronic configuration is :

 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p2

d. Atomic number 47 is Silver its electronic configuration is :

  1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1

e. Atomic number is 12 Magnesium its electronic configuration is :

  1s2 2s2 2p6 3s2

f. Atomic number 28 is Nickel its electronic configuration is :

 1s2 2s2 2p6 3s2 3p6 4s2 3d8

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The amount, in grams, of calcium that are in 3.01 x \(10^{22\) atoms of calcium would be 1.9992 grams.

According to the rules, 1 mole of any substance contains Avogadro's number, which is 6.022 x \(10^{23\) atoms or molecules.

Now, we have a substance with  3.01 x \(10^{22\) atoms of calcium.

If, 1 mole = 6.022 x \(10^{23\) atoms

Then, 3.01 x \(10^{22\) atoms = 3.01 x \(10^{22\)/ 6.022 x \(10^{23\)

                                       = 3.01/60.22

                                       = 0.04998 moles

Recall that:

Mole = mass/molar mass

The molar mass of the calcium atom is 40 g/mol.

Thus, the mass of 0.04998 mole of calcium = mole x molar mass

                                                                          = 0.04998 x 40

                                                                           = 1.9992 grams

In other words,  3.01 x \(10^{22\) atoms of calcium would weigh 1.9992 grams of ca.

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