Anybody Understand this question please help me !

Answer:

V = 5.97 L

Explanation:

Hello!

In this case, according to the ideal gas law:

[tex]PV=nRT[/tex]

We would need to solve for V as we know the temperature and pressure as the gas it at STP conditions (273 K and 1 atm respectively):

[tex]V=\frac{nRT}{P}[/tex]

Next, we compute the moles in 8 g of NO, given its molar mass of 30.01 g/mol:

[tex]n=\frac{8g}{30.01g/mol}=0.267mol[/tex]

Therefore, we obtain the following volume:

[tex]V=\frac{0.267mol*0.08206\frac{atm*L}{mol*K}*273K}{1atm}\\\\V=5.97 L[/tex]

Best regards!

Answer:

The amount of energy available at level A depend on energy provided from an a biotic source

Answer:

the percentage composition of mass of nitrogen in NH OH is 42.86 %

Answer:

0.02392 m

Explanation:

Kilo - Hecto - Deka - Meters/Liters/Grams - Deci - Centi - Milli

23.92 mm ---> 0.02392 m

Basically move the decimal 3 units to the left.

Hope this helps and stay safe, happy, and healthy, thank you :) !!

Answer:

632 g

Explanation:

First we convert 579 g of CO₂ into moles, using its molar mass:

Then we convert CO₂ moles into O₂ moles, using the stoichiometric coefficients:

Finally we convert O₂ moles into grams, using its molar mass:

Answer:

they like smooth

Explanation:

Answer:

[tex]\boxed {\boxed {\sf 84.313 \ g/mol}}[/tex]

Explanation:

The molar mass is the mass per mole of an element or substance. The values for atomic mass on the Periodic Table are used as the molar mass. Look up the molar masses for the elements in the formula.

Analyze the formula. Magnesium and carbon have no subscript, so there is only one atom of each. Oxygen has a subscript of 3, so there are 3 atoms and the mass has to be multiplied by 3.

The molar mass of magnesium carbonate is 84.313 grams per mole.

Answer: they can combine to form water or hydrogen peroxide.

Explanation:

sorry if it wrong i just looked it up lol. hope this helps tho

Answer:

Results from method B is more reliable than method A.

Explanation:

The two method that are used for the analysis produced different results. The first method that is method A  gives higher value of the iodine content than the method B.

When [tex]$Mn^{2+}$[/tex] was added to water, method A showed an increased in the iodine content and it increases with the increase in the amount of [tex]$Mn^{2+}$[/tex] .

Where as in the method B, there is no change in the results. Therefore the measurements provided by the method A shows an inference of [tex]$Mn^{2+}$[/tex] ion.

The measurement of the iodine content is affected by the presence of the ion [tex]$Mn^{2+}$[/tex] in water.

Since in method B there is no change in measurement, it is independent of the presence [tex]$Mn^{2+}$[/tex] ion in water.

As higher iodine content is given by method A, so [tex]$Mn^{2+}$[/tex]  ion must be present in original water that must be interfering the measurement. Hence, method B is more reliable.

Method B is more reliable as its value is not altered by external factors such as contamination.

Water analysis is done to test the quality of water.

The method employed in water analysis is titrimetric analysis.

In the test iodide (I⁻) content of a commercial mineral water using the two methods, the results of the test showed different values for the iodide content.

However, since addition of Mn²⁺ to the mineral water increases the iodide content value from Method A while that of Method B remains unchanged, Method B is more reliable as its value is not altered by external factors such as contamination.

Learn more about titrimetric analysis at: https://brainly.com/question/8463543

Answer:

It can be verified since the information came from a government article. Or you could trust the magzine/general article if its from a well known article. Explanation:

you get the point, you can add on to this. I can't make it the best since im not in your class learning. Good luck

Answer: 248.66g

Explanation:

4.3e24 / 6.23e23 = 6.9 mols O2

6.9(18.02*2)=248.66

Answer:

zoo wee mama

Explanation:

The particles that make up an object are held together by bonds. Insulators have strong bonds that hold their particles rigidly in place. This prevents particles from gaining energy and increasing the temperature. Wool, dry air, plastics, and polystyrene foam are all examples of good insulators.

Answer:

32.4 kJ

Explanation:

Given that:

Specific heat capacity fo copper, c = 0.9

Mass of copper, m = 700 g

Temperature change, dθ ;t2 - t1 = (82.1 - 30.7) = 51.4

Energy required, E = mcdθ

E = 700 * 0.9 * 51.4

E = 32382 J

Energy required on kJ

32382 / 1000

= 32.382 kJ

= 32.4 kJ

Answer:

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

Explanation:

Answer:

A molecule is the smallest part of an element, sorry if im incorrect

Answer:

Evaporation and condensation

Explanation:

[tex] \huge \colorbox{pink}{Answer☟︎︎︎}[/tex]

When ice melts, liquid water performs the act of erosion by carrying away the tiny rock fragments lost in the split. This specific process (the freeze-thaw cycle) is called frost weathering or cryofracturing. Temperature changes can also contribute to mechanical weathering in a process called thermal stress.

Answer:

See explanation

Explanation:

In the periodic table, hydrogen is placed in group 1 for convenience. Hydrogen is not a metal, however, its common oxidation state is +1. It easily forms a univalent positive ion just like group 1 elements.

So, when hydrogen is combined with strongly electropositive metals such as sodium, lithium, etc, hydrogen accepts one electron and exhibits an oxidation state of -1 in those compounds.

Such compounds in which hydrogen is combined with strongly electropositive metals to give a binary compound is called a hydride.

Answer:

ok so i did the problem and the answer was 8e+29

Explanation:

i dont really know what the answer is but thats the answer i got

sorry if this didnt help

Answer:

the second answer choice i think

Explanation:

Answer:

I think you have to freeze the water itself then take the temp with a thermometer ️of each one then record how long it takes each one to start freezing then how long it takes for it to melt

Explanation:

sorry if I'm wrong but you have to do the experiment yourself then fill it out

Answer:

[tex]\huge\boxed{\sf True}[/tex]

Explanation:

If the concentrations of greenhouse gases keep increasing, They will absorb more and more long wave energy coming from the sun and radiating from the earth's surface and thus will cause an increase in temperature.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

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Answer:

1 Ca3(PO4)2+ 6 NaCl ---------> 2 Na3PO4 + 3 CaCl2

Answer:

K = 8.6x10⁻⁶

Explanation:

a chemist finds that a 5.2L reaction vessel...

To solve this question we need first to find the equation of the equilibrium constant using the chemical eqiation:

TiCl₄(l) ⇄ Ti(s) + 2Cl₂(g)

The equilibrium constant expression is:

K = [Cl₂]²

Because equilibrium constant is defined as the ratio berween concentrationa of products over reactant powered to its reaction coefficient. But pure liquids as TiCl₄(l) and pure solids as Ti(s) are not taken into account

Now, we need to find the molar concentration of Cl₂, [Cl₂]:

Moles Cl₂ -Molar mass: 70.9g/mol-:

1.08g * (1mol / 70.9g) = 0.0152 moles / 5.2L =

2.93x10⁻³M = [Cl₂]

K = (2.93x10⁻³)²

Answer:

1.239 * 10^8 Kg

Explanation:

Since all the electricity consumed comes from natural gas;

amount of electricity consumed = 700 * 300,000 = 2.1 * 10^8 kWh

So, amount of CO2 consumed is given by;

amount of electricity consumed * amount of CO2 per kWh

Hence,

Amount of CO2 = 2.1 * 10^8 kWh * 0.59 = 1.239 * 10^8 Kg