Bob measured out 1.60 grams of sodium. He calculates that 1.60 g of
sodium should produce 4.07 g of NaCl. In his lab, he only makes 3.45 g.
What is his percent yield?

Answer:

0.47 cm³

Explanation:

[tex]Volume=Mass/Density\\[/tex]

Plug in the mass (4.2 grams) and the density (8.96 g/cm³)

[tex]Volume=4.2/8.96\\Volume=0.47[/tex]

Therefore, the volume of a 4.2 g piece of copper is approximately 0.47 cm³.

I hope this helps!

Answer:

T-rex

Explanation:

Answer:

P2=0.385atm

Explanation:

step one:

Given that the temperature T1=  60 Celcius

we can convert this to kelvin by adding 273k to 60 Celcius

we have T1= 333k

pressure P1= 0.470 atm

step two:

we know that the standard temperature is T2= 273K

Applying the temperature and pressure relationship we have

P1/T1=P2/T2

substituting our given data we have

0.47/333=P2/273

cross multiply we have

P2= (0.47*273)/333

P2= 128.31/333

P2=0.385 atm

Answer:i love you

Explanation:

Answer: An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.  If the atom has more electrons than protons, it is a negative ion, or ANION. If it has more protons than electrons, it is a positive ion.

Explanation:

Answer:

4.4 g XY

I'm not sure but that's the closest I can get or try

Answer:

sharp clever bright

Explanation:

s

Answer:

will you friend me please

Answer:

Explanation:

i try to help you

✧Kindly see the attached picture! ☄

♪ Hope I helped! ♡

[tex] \star[/tex] Best regards! ツ

☞ [tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex] ✎

Answer:

An alloy is a homogeneous mixture

Explanation:

D

An alloy, a metallic substance composed of two or more elements, as either a compound or a solution is a homogeneous mixture. The correct option is d.

An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of metal in the resulting material, such as electrical conductivity, ductility, opacity, and lustre, but may have properties that differ from those of pure metals, such as increased strength or hardness.

In some cases, an alloy may reduce the overall cost of the material while preserving important properties. In other cases, the mixture imparts synergistic properties to the constituent metal elements such as corrosion resistance or mechanical strength. Alloys are defined by a metallic bonding character. The alloy constituents are usually measured by mass percentage for practical applications, and in atomic fraction for basic science studies.

Alloys are usually classified as substitutional or interstitial alloys, depending on the atomic arrangement that forms the alloy.

Learn more about alloy, here:

https://brainly.com/question/3718729

#SPJ6

Answer:

Hello There!!

Explanation:

Pure products come from and made where they are original made and raw products are just pasteurized with no added ingredients included in them.

hope this helps,have a great day!!

~Pinky~

Answer:

576K

Explanation:

Using the formula

P1/T1 = P2/T2

Where;

P1 = initial pressure (torr)

P2 = final pressure (torr)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

P1 = 748 torr

P2 = 1496 torr

T1 = 15°C = 15 + 273 = 288K

T2 = ?

Using P1/T1 = P2/T2

T2 = P2T1/P1

T2 = (1496 × 288) ÷ 748

T2 = 430848 ÷ 748

T2 = 576K

Answer:

Lead sulfite is the inorganic compound with the formula PbSo3 or O3PbS.

Explanation:

Answer:

The answer is "Option B".

Explanation:

[tex]\to CH_3COOH + NaOH \longleftrightarrow CH_3COONa + H_2O\\\\\to CH_3COONa + NaOH\longleftrightarrow CH3COONa\\\\\therefore \ mol\ NaOH = (5 \ E-3\ L)\times(0.10 \ \frac{mol}{L}) = 5 \ E-4\ mol\\\\[/tex]

[tex]\to mol\ CH_3COOH = (0.05 \ L)\times(0.20 \frac{mol}{L}) = 0.01 \ mol\\\\\to C \ CH_3COOH = \frac{(0.01 \ mol - 5 \ E-4\ mol) }{(0.105 \ L)}\\\\\to C \ CH_3COOH = 0.0905 \ M\\\\\therefore \ mol \ CH_3COONa = (0.05\ L )\times (0.20 \ \frac{mol}{L}) = 0.01 \ mol\\\\[/tex]

[tex]\to C \ CH_3COONa = \frac{(0.01\ mol + 5 \ E-4\ mol)}{(0.105\ L )}\\\\\to C \ CH_3COONa = 0.1 \ M\\\\\therefore Ka = ([H_3O^{+}]\times \frac{(0.1 + [H_3O^+]))}{(0.0905 - [H_3O^+])} = 1.75\ E-5\\\\\to 0.1[H_3O^+] + [H_3O^+]^2 = (1.75 E-5)\times (0.0905 - [H_3O^+])\\\\[/tex]

[tex]\to [H_3O^+]^2 \ 0.1[H_3O^+] = 1.584\ E-6 - 1.75\ E-5[H_3O^+]\\\\\to [H_3O^+]^2 + 0.1000175[H_3O^+] - 1.584 \ E-6 = 0\\\\\to [H_3O^+] = 1.5835\ E-5 \ M\\\\\therefore pH = - \log [H_3O^+]\\\\\to pH = - \log (1.5835 \ E-5)\\\\ \to pH = 4.8004 > 4.7[/tex]

Answer: Titanium has 22 protons

Explanation:  If an atoms donates 4 electrons, it forms cation with charge +4. So original atom have 22 electrons and because atom is neutral, it has 22 protons. Number of neutrons does not matter, there are more neutrons than protons  in heavier atoms.

Answer:

A. 0.1 M HNO3 (aq) solution contains more H+ than HF(aq) solution

.ANSWER:Copper is a ductile metal

EXPLAIN :This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls. They don't corrode and they can be bent to fit around corners.

Copper is a ductile metal due to ductility.This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls.

Ductility is a mechanical property commonly described as a material's amenability to drawing (e.g. into wire).In materials science, ductility is defined by the degree to which a material can sustain plastic deformation under tensile stress before failure. Ductility is an important consideration in engineering and manufacturing. It defines a material's suitability for certain manufacturing operations (such as cold working) and its capacity to absorb mechanical overload.

Some metals that are generally described as ductile include gold and copper, while platinum is the most ductile of all metals in pure form.However, not all metals experience ductile failure as some can be characterized with brittle failure like cast iron. Polymers generally can be viewed as ductile materials as they typically allow for plastic deformation.

Learn more about ductility,here:

https://brainly.com/question/29416697

#SPJ6

Some of the scientists involved in discovering the atoms were John Dalton, J.J Thomas, Ernest Rutherford, Niels Bohr and Erwin Schödinger.

John Dalton recognized that atoms from a particular element differ from atoms and he came up with the Solid Sphere Model.

J.J Thomas recognized electrons as compounds of atoms and he came up with the plum pudding model.

Ernest Rutherford recognized that positive charge was located in the middle of the atom in the nucleus and he came up with the nuclear model.

Niels Bohr proposed stable electron orbit and explained the emission spectra of the elements. Besides, he came up with the planetary model.

Erwin Schödinger showed that electrons do not move in orbits around the nucleus but in clouds where their position is uncertain and he came up with the quantum model.

Hope that helps!

Answer:

3.68 g

Explanation:

[tex]n_{CO2}[/tex] = 18 ÷ 44 = 0.4

2C2H2 + 5O2 → 4CO2 + 2H2O

   2       :    5      :    4      :    2  

                             0.409                 (moles)

⇒ [tex]n_{H2O}[/tex] = 0.409 × 2 ÷ 4 = 0.2045 moles

⇒ [tex]m_{H2O}[/tex] = 0.2045 × 18 = 3.68 grams

the answer is 133

because thats how the water is

Answer:

627.4 mmHg

Explanation:

From Gay-Lussac law:

[tex] \frac{p1}{t1} = \frac{p2}{t2} [/tex]

p1 = 760 mmHg

t1 = 343 K

t2=283.15 K

[tex]p2 = p1 \times \frac{t2}{t1} [/tex]

[tex]p2 = 760 \times \frac{283.15}{343.0} [/tex]

[tex]p2 = 627.4 \: mmhg[/tex]

If a gas is cooled from 343.0 K to 283.14 K and the volume is kept constant the final pressure would be 627.4 mm Hg if the original pressure was 760.0 mm Hg.

Gay-Lussac's law states that the pressure of a given mass of gas at a constant volume varies directly with the temperature of the gas.  Gay-Lussac's law defined the relationship between pressure and temperature of a gas when kept at a constant volume.

P ∝ T       (When V = constant)

or, P = kT

or, [tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]

Here,

[tex]P_{1}[/tex] = 760.0 mm Hg,

[tex]T_{1}[/tex]= 343.0 K

[tex]T_{2}[/tex] = 283.15 K

Now put the values in above formula, we get

[tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]

[tex]\frac{760.0\ \text{mm Hg}}{343.0K} = \frac{P_2}{283.15\ K}[/tex]

[tex]P_{2} = \frac{760.0\ \text{mm Hg} \times 283.15\ K}{343.0\ K}[/tex]

[tex]P_{2} = \frac{215194\ \text{mm Hg}}{343}[/tex]

[tex]P_{2}[/tex] = 627.4 mm Hg

Thus, we can say that if a gas is cooled from 343.0 K to 283.14 K and the volume is kept constant the final pressure would be 627.4 mm Hg if the original pressure was 760.0 mm Hg.

Learn more about Gay-Lussac's Law here: https://brainly.com/question/24691513

#SPJ2

Answer:

a mole is the number of molecules in 22.4 dm³ for all gases at all temperatures and pressures

Answer:

(CH3)2CHCH2COCH3

Explanation:

Answer:

The ratio of volumes in the given case illustrates the Gay Lussac's Law of Gaseous Volumes.

- The law was given by the french chemist Gay Lussac in the year 1806.

- He stated that when gases are combined or are produced in a chemical reaction, they do so in a simple ratio by volume.

- It is given that 2 volumes of hydrogen combine with 1 volume of oxygen producing 2 volumes of water.

- This is in accordance with this law.

Explanation:

Physical properties

Isomer M.P. (°C) B.P. (°C)

n-hexane −95.3 68.7

3-methylpentane −118.0 63.3

2-methylpentane (isohexane) −153.7 60.3

2,3-dimethylbutane −128.6 58.0

1 more row

Answer: 1+charge

Explanation: hoped this helped:)

There are 6.02*10 ^23 atoms in one mole of any substance according to avogadros law. Therefore in 2.41*10 ^25 calcium atoms, there are (2.41*10 ^25/6.02*10 ^23) moles of calcium, which is 40.03322259 or approximately 40 moles of calcium.

Answer:

5.6 m/s

Explanation:

Given,

First number = 13.254 m/s

Second number = 7.7 m/s

We need to find the difference between these two numbers. First we round off 13.254 to one decimal place i.e. 13.254 = 13.3 m/s

The difference between them is given by :

D = 13.3 - 7.7

= 5.6 m/s

Hence, the difference of the two numbers is 5.6 m/s.