What is the volume of 1g of ice in cm3?

Answer:

NaHCO3 + HCl = NaCl + H2O + CO2

Explanation:

The total number of atoms of each element on either side of the equation must be equal.

Answer:

Solution of an unknown concentration that has another solution slowly added to it Analyte.

A reagent added to the analyte solution that changes color when the reaction is complete Indicator .

Glassware that allows a solution to be precisely and slowly added to another solution burette.

Solution of known concentration that is slowly added to a solution of unknown concentration titrant.

When the required amount of one solution has been added to the second solution to complete the reaction end point.

Process of slowly adding a solution to react with another solution and determine the concentration of one of the solutions based on the reaction between them  Titration.

Answer:

please refer to the attachment above;)

Answer:

Because it contains Na+ and Cl- ions, Which are conductors of electricity

Explanation:

Answer:

AN ELECTRON HAS THE SMALLEST MASS!

Answer:

A) electron

good luck, i hope this helps :)

Answer:

Cells are the smallest living unit of an organism

Answer:

all living things living things have blood cells

Explanation:

this is because robert hooke did not make this apart of the theory

Answer:

C4H4

Explanation:

92.31% of 52.0 g/mol is 48.0012 g/mol

7.69% of 52.0 g/mol is is 3.9988 g/mol

Carbon has a gram-formula mass of about 12, which goes into 48.0012 about 4 times, so there should be 4 atoms of Carbon

Hydrogen has a gram-formula mass of about 1, which goes into 3.9988 about 4 times, so there should also be 4 atoms of hydrogen

Answer:

Two tectonic plates had the same density and a collision of the plates pushed the advancing plate that contained fossilized marine organisms upward forming the Himalayan mountains and Mount Everest.

Explanation:

:)

Answer:

[tex]F=1.92x10^5N[/tex]

Explanation:

Hello!

In this case, since the force exerted by an object with a certain mass an acceleration is:

[tex]F=m*a[/tex]

We can plug in the given mass of 12,000 kg and acceleration of 16 m/s^2 to obtain:

[tex]F=12,000kg*16m/s^2\\\\F=192,000kg*m/s^2\\\\F=1.92x10^5N[/tex]

Best regards!

Answer:

I believe it's D!

Explanation:

B is what is being saved, C is a potential creation of, A is a method.

Answer:

ewan ko po

Explanation:

sana makatulong

Answer:

8.90

Explanation:

because I calculated it

Explanation:

1. Pb(CO3)2

Element Number Mass Percet Composition

Oxygen 6 16.00 29.34%

Carbon 2 12.01 7.34%

Lead 1 207.21 63.32%

2. Ga(OH)3

Element Number Mass Percet Composition

Hydrogen 3 1.0079 2.50%

Oxygen. 3 16.00 39.75%

Gallium 1 69.72 57.74%

3. P4O10

Element Number Mass Percet Composition

Oxygen. 10 16.00. 56.36%

Phosphorus. 4 30.97 43.64%

4. Ca3P2

Element Number Mass Percet Composition

Phosphorus 2 30.97 34.00%

Calcium. 3 40.08 66.00%

5. Ti(NO3)3

Element Number Mass Percet Composition

Oxygen. 9 16.00 61.56%

Titanium. 1 47.87 20.47%

Nitrogen. 3 14.01 17.97%

Answer: Simpe its 1

Explanation:I took that quiz before hope this helps :)

Answer:

PV=nRT

STP is 100kPa and 273.15K

PV/RT=n

n=17.3moles

Explanation:

Answer: A. HNO3

Explanation:

Answer:

I'm pretty sure this is a question about your opinion so there is no wrong answer! Just think about the question and if you were in those shoes. There is no right or wrong answer! :)

Explanation:

Answer:

First write the balanced equation for the reaction of HCl with Zn (NOTE: the previous answer did NOT do this and thus obtained an incorrect answer)

Zn + 2HCl ==> ZnCl2 + H2(g)

moles of H2 desired:  PV = nRT

n = PV/RT = (1 atm)(10L)/(0.0821 Latm/Kmol)(298K)

n = 0.409 mole H2 desired

moles Zn needed:

0.409 moles H2 x 1 mole Zn/2 moles HCl = 0.204 moles Zn needed

mass Zn needed = 0.204 moles Zn x 65.4 g/mol = 13.4 g Zn needed (to 3 sig. figs.)

Explanation:people always get this wrong but i got you

Answer: oder has mass

Explanation:

Answer:

37.6 Km/h

Explanation:

From the question given above, the following data were obtained:

Distance = 100 m

Time = 9.58 s

Speed =?

Next, we shall convert 100 m to Km. This can be obtained as follow:

1000 m = 1 Km

Therefore,

100 m = 100 m × 1 Km / 1000 m

100 m = 0.1 km

Next, we shall convert 9.58 s to h. This can be obtained as follow:

3600 s = 1 h

Therefore,

9.58 s = 9.58 s × 1 h / 3600 s

9.58 s = 2.66×10¯³ h

Finally, we shall determine the speed. This can be obtained as follow:

Distance = 0.1 km

Time = 2.66×10¯³ h

Speed =?

Speed = Distance / Time

Speed = 0.1 / 2.66×10¯³

Speed = 37.6 Km/h

Answer:

Mass percentage 6.4967

Explanation:

I had some study notes

Answer:

Expansion: increase in size Contraction: decrease in size

Explanation:

The increase in size of an object on heating is called expansion where as the decrease in size of an object on cooling is called contraction.

Answer:

[tex]T_2 =388.50K[/tex]

Explanation:

Given

[tex]p_1 = ??[/tex] -- Initial vapour pressure

[tex]p_2 = 6.50p_1[/tex] --- Final vapour pressure

[tex]T_1 = 355K[/tex] ---- Initial temperature

[tex]T_2 = ??[/tex] --- Final temperature

[tex]\triangle _{vap}H = 64.08kJmol[/tex] --- Enthalpy of vaporization

Required

Calculate T2

To do this, we make use of Clausius-Clapeyron equation.

Which states that:

[tex]ln(\frac{p_2}{p_1}) = \frac{\triangle _{vap}H}{R}(\frac{1}{T_1} - \frac{1}{T_2})[/tex]

Where:

[tex]R = 8.314 J.K^{-1}mol^{-1}[/tex] --- Universal Gas constant

[tex]\triangle _{vap}H = 64.08kJmol[/tex]

[tex]\triangle _{vap}H = 64080\ kJmol[/tex]

[tex]ln(\frac{p_2}{p_1}) = \frac{\triangle _{vap}H}{R}(\frac{1}{T_1} - \frac{1}{T_2})[/tex] becomes

[tex]ln(\frac{6.50p_1}{p_1}) = \frac{64080}{8.314}(\frac{1}{355} - \frac{1}{T_2})[/tex]

[tex]ln(\frac{6.50p_1}{p_1}) = 7707.48(\frac{1}{355} - \frac{1}{T_2})[/tex]

[tex]ln(6.50) = 7707.48(\frac{1}{355} - \frac{1}{T_2})[/tex]

[tex]1.872 = 7707.48(\frac{1}{355} - \frac{1}{T_2})[/tex]

Take LCM

[tex]1.872 = 7707.48(\frac{T_2 - 355}{355T_2})[/tex]

[tex]1.872 = 7707.48*\frac{T_2 - 355}{355T_2}[/tex]

[tex]1.872 = \frac{7707.48*(T_2 - 355)}{355T_2}[/tex]

Cross Multiply

[tex]355T_2*1.872 = 7707.48*(T_2 - 355)[/tex]

[tex]664.56T_2 = 7707.48T_2 - 2736155.4[/tex]

Collect Like Terms

[tex]664.56T_2 - 7707.48T_2 =- 2736155.4[/tex]

[tex]-7042.92T_2 =- 2736155.4[/tex]

Make T2 the subject

[tex]T_2 =\frac{- 2736155.4}{-7042.92}[/tex]

[tex]T_2 =388.497299416[/tex]

[tex]T_2 =388.50K[/tex]

The final temperature is 388.50K

The temperature at which the vapor pressure will be 6.50 times higher than it was at 355K is 389 K

The Clausius-Clapeyron Equation is widely used for the determination of the vapor pressure of another temperature, provided we know the vapor pressure at a certain temperature as well as the heat of vaporization.

Given that:

By using the Clausius-Clayperon Equation:

[tex]\mathbf{In \Big( \dfrac{P_2}{P_1} \Big) = \dfrac{\Delta H_{vap}}{R} \Big (\dfrac{1}{T_1} - \dfrac{1}{T_2} \Big) }[/tex]

[tex]\mathbf{In \Big( \dfrac{6.5P_1}{P_1} \Big) = \dfrac{64.08 \times 10^3 }{8.314} \Big (\dfrac{1}{355} - \dfrac{1}{T_2} \Big) }[/tex]

[tex]\mathbf{In(6.5)=7707.48 \Big (\dfrac{1}{355} - \dfrac{1}{T_2} \Big) }[/tex]

[tex]\mathbf{1.872 =21.71 - \dfrac{7707.48}{T_2} }[/tex]

[tex]\mathbf{\dfrac{7707.48}{T_2} = 21.71- 1.872 }[/tex]

[tex]\mathbf{\dfrac{7707.48}{T_2} = 19.838 }[/tex]

[tex]\mathbf{T_2= \dfrac{7707.48}{19.838} }[/tex]

[tex]\mathbf{{T_2}=388.521 \ K }[/tex]

T₂ ≅ 389 K

Learn more about Clausius-Clayperon equation here:

https://brainly.com/question/1077674?referrer=searchResults

Answer:

C is the false one atoms contain chemical bonds

Answer:

C. Atoms contain chemical bonds.

Reason:

Atoms don't have any chemical bonds. Molecules are the particles have chemical bonds.

Answer:

21 kJ/mol

Explanation:

Step 1: Given and required data

Step 2: Write the balanced equation at equilibrium

CO(g) + 2 H₂(g) ⇄ CH₃OH(g)

Step 3: Calculate the standard Gibbs free energy of the reaction (ΔG°)

We will use the following expression.

ΔG° = - R × T × ln Kc

ΔG° = - (8.314 J/K.mol) × 298 K × ln 2.1 × 10⁻⁴ = 2.1 × 10⁴ J/mol = 21 kJ/mol

Answer:

because they react with other gases of atmosphere and pollute the environment

Answer:

(1) (NH₄)₂SO₄(aq) + BaCl₂(aq) ⇒ BaSO₄(s) + 2 NH₄Cl(aq)

(2) 2 NH₄⁺(aq) + SO₄²⁻(aq) + Ba²⁺(aq) + 2 Cl⁻(aq) ⇒ BaSO₄(s) + 2 NH₄⁺(aq) + 2 Cl⁻(aq)

(3) SO₄²⁻(aq) + Ba²⁺(aq) ⇒ BaSO₄(s)

(4) NH₄⁺ and Cl⁻

Explanation:

(1) Let's consider the molecular equation that occurs after mixing aqueous ammonium sulfate solution and barium chloride solution. This is a double displacement reaction.

(NH₄)₂SO₄(aq) + BaCl₂(aq) ⇒ BaSO₄(s) + 2 NH₄Cl(aq)

(2) The complete ionic equation includes all the ions and insoluble species.

2 NH₄⁺(aq) + SO₄²⁻(aq) + Ba²⁺(aq) + 2 Cl⁻(aq) ⇒ BaSO₄(s) + 2 NH₄⁺(aq) + 2 Cl⁻(aq)

(3) The net ionic equation includes only the ions that participate in the reaction (not spectator ions) and the insoluble species.

SO₄²⁻(aq) + Ba²⁺(aq) ⇒ BaSO₄(s)

(4) The spectator ions are NH₄⁺ and Cl⁻.

Explanation:

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251 mol Xe

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[Given] 1.51 × 10²⁶ atoms Xe

[Solve] moles Xe

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rule and round. We are given 3 sig figs.

250.747 mol Xe ≈ 251 mol Xe

Answer:

C.Iodine ion

Explanation:

BECAUSE HIS LACK OF IODINE THAT'S WHY HE HAS GOITER