What are the products of the following neutralization reaction? (No need to balance)
H3PO4 + Ba(OH)2 --> ??? + ???

A.)H2O + Ba3(PO4)2
B.)H30+ + BaPO4
C.)H30+ + Ba3(PO4)2
D.)H2O + BaPO4

Answer:

Le football est mon sport préféré. C'est aussi un sport célèbre dans le monde entier. En jouant au football, nous pouvons garder notre corps fort, en forme et flexible, jouer au football est un bon exercice et bon pour la santé. Il a besoin d'un terrain spacieux. Le nombre de joueurs nécessaires pour ce jeu est de vingt-deux. Il y a deux groupes. Chaque groupe compte onze joueurs. Chaque groupe a un gardien de but. Il y a un centre à partir duquel le jeu commence avec l'arbitre. Il a le pouvoir de commenter le bien ou le mal. Les joueurs doivent respecter les règles du sport. Si un joueur lui désobéit, il est disqualifié et sort du terrain de jeu. Lorsque le but est marqué des supporters, la joie n’a pas de limite. Des applaudissements passionnants sont visibles lorsqu'un but est marqué. Cette pièce est originaire d'Angleterre. Ensuite, il s'est répandu dans presque tous les coins et recoins du monde. Sa popularité augmente de jour en jour.

Answer:

Density of irregular object = 1.62 g/mL

Explanation:

Density of a substance = mass of substance /volume of substance

Mass of substance as measured from the scale = 19.37 g

Volume of the object spins determined bynthe displacement method since itnis an irregular object. In this method, the object whose volume is required is immersed in a measuring cylinder containing a known volume of water. The new volume of water after the immersion of the object is recorded. The volume of the irregular object is then obtained by finding the difference between the final and initial volume of water. This is so because a solid immersed in a liquid will displace its own volume of the liquid.

Volume of irregular object = 61.94 mL - 50.0 mL = 11.94 mL

Density of irregular object = 19.37 g / 11.94 mL

Density of irregular object = 1.62 g/mL

A) CH3NH2

This is because CH3NH2 recieved H from CH3COOH

Answer:

Decreased change in temperature

Explanation:

Delta T signifies the temperature is changing, but by adding a negative, it specifies that it changes by decreasing.

Answer:

True,When fluorine gas is put into contact with calcium metal at high temperatures, calcium fluoride powder is created in an exothermic reaction.

Answer:

276 mL

Explanation:

Using Charles law equation as follows:

V1/T1 = V2/T2

Where;

V1 = initial volume (mL)

V2 = final volume (mL)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question;

V1 = 225mL

V2 = ?

T1 = 23°C = 23 + 273 = 296K

T2 = 90°C = 90 + 273 = 363K

Using V1/T1 = V2/T2

225/296 = V2/363

Cross multiply

296 × V2 = 363 × 225

296V2 = 81675

V2 = 81675/296

V2 = 275.9

V2 = 276 mL

Answer:

Pressure increases to 1.16 atm if the temperature changes to 317 K.

Explanation:

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C (or 273 K) are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

On the other hand, Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law mathematically indicates that the quotient between pressure and temperature is constant:

[tex]\frac{P}{T}=k[/tex]

Studying an initial state 1 and a final state 2 is fulfilled:

[tex]\frac{P1}{T1}=\frac{P2}{T2}[/tex]

In this case:

Replacing:

[tex]\frac{1 atm}{273 K} =\frac{P2}{317 K}[/tex]

Solving:

[tex]P2=317 K*\frac{1 atm}{273 K}[/tex]

P2= 1.16 atm

Pressure increases to 1.16 atm if the temperature changes to 317 K.

Answer:

Tomar 82 mL de solución concentrada y agregar agua hasta un volumen final de 1.0 L.

Explanation:

Tenemos una solución concentrada de hipoclorito de sodio, cuya concentración es 6.1%, por lo tanto:

Cc = 6.1 %

Y debemos hacer una dilucion para obtener una solucion diluida con:

Cd = 0.5%

Vd = 1.0 L

Por lo tanto, podemos usar la siguiente fórmula para calcular el volumen a tomar de solucion concentrada (Vc):

Cc x Vc = Cd x Vd

⇒ Vc = (Cd x Vd)/Cc = (0.5% x 1.0 L)/6.1% = 0.082 L

0.082 L x 1000 mL/1 L = 82 mL

Por lo tanto, para preparar la solución debemos tomar 82 mL de solucion concentrada de hipoclorito de sodio 6.1% y agregar agua hasta un volumen final de 1.0 L.

Answer: 8

Explanation: just did the same question and got it right

Answer:

True

Explanation:

Here is an example: chemical properties include flammability, toxicity, acidity, reactivity. we observe the changes of these properties. Therefore, It's true.

Answer:

A metallic bond is a force of attraction between charged metal ions and the electrons that are in the delocalized bond, which covers the assembly of ions. A covalent bond is the force of attraction between the nuclei of atoms, and the electrons shared between them.

Explanation:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond can be generated by electrostatic attraction between charged ions (for example, ionic bonds) or by electron sharing (for example, covalent bonds).

I hope this helps you :)

Answer:

If the tilt of the Earth's axis is changed there would be a change in the season because the season is caused by the Earth's tilt (23.5 degrees) and the revolution or orbit.

The tilt in earth axis changes the season because season change is caused by  23.5 ° tilted axis of earth and the resolution or orbit.

Resolution is defined as a measure used to describe the sharpness and clarity of a pictures or images.

Resolution can also be known as optical resolution and chiral resolution.

It can be defined as any process by which a racemic mixture is separated into its two constituent enantiomer.

There are mainly three types of resolution.

With the tilt in earth axis there is formation of season which causes change in season.

Thus, the  tilt in earth axis changes the season because season change is caused by  23.5 ° tilted axis of earth and the resolution or orbit.

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Answer:

[tex]12 \: litres \: contain \: 3 \: \: moles \: of \: sodium \: chloride \\ 1 \: litre \: will \: contain \: \frac{(1 \times 3)}{12} moles \\ = 0.25 \: mol \: {l}^{ - 1} [/tex]

Explanation:

[tex]12 \: litres \: contain \: 3 \: \: moles \: of \: sodium \: chloride \\ 1 \: litre \: will \: contain \: \frac{(1 \times 3)}{12} moles \\ = 0.25 \: mol \: {l}^{ - 1} \\ or : 0.25 \: M[/tex]

Answer and Explanation:

Las fórmulas químicas sirven para conocer qué elementos químicos y en qué cantidad están presentes en un compuesto químico. Por ejemplo: la fórmula química del dióxido de carbono es CO₂. Esta fórmula nos indica que la molécula de dióxido de carbono está formada por 1 átomo del elemento químico carbono y 2 átomos del elemento oxígeno.

Los diferentes tipos de fórmulas químicas son: fórmula empírica, fórmula molecular, fórmula semi-desarrollada y fórmula desarrollada. Tomando como ejemplo al compuesto butano:

- Fórmula empírica: C₂H₅ (indica que hay 2 átomos de C por cada 5 átomos de H; es una fórmula mínima)

- Fórmula molecular: C₄H₁₀ (indica que en realidad cada molécula de butano tiene 4 átomos de C y 10 átomos de H).

- Fórmula semi-desarrollada: CH₃CH₂CH₂CH₃ (indica el órden en que se unen los átomos en la molécula).

-Fórmula desarrollada: ver dibujo adjunto (indica cómo están unidos los átomos dentro de la molécula. Ahora vemos los enlaces entre los átomos y que los 2 átomos de C de los extremos están unidos a 3 átomos de H y a otro C, y los dos átomos de C del medio están unidos cada uno a 2 C y 2 H).

Answer:

A. gas

hope it helps....

it a liquid so the answer is B

Answer:

Filled below

Explanation:

#v.e means number of valence electrons.

Also, the column total v.e is gotten by adding the v.e of the metal to the v.e of the non metal based on the chemical formula of both of the 2 elements combined.

K: Cl: 5; KCl; 1 + 5 = 6

Be: S: 6; BeS; 2 + 6 = 8

Na: F: 7; NaF; 1 + 7 = 8

Mg: Se: MgSe; 2 + 6 = 8

Al; N; AlN; 1 + 5 = 6

Be; F; BeF2; 2 + 2(7) = 16

Mg; N; Mg3N2; 3(2) + 2(7) = 20

Answer:

Formula: [tex]Velocity \: V = f \lambda \\ Solution: = 5 \times 0.8 \\ = 4 \: {ms}^{ - 1} [/tex]

Answer:

The first guy is correct. That's what I got too

The molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M. Details about molarity is found below.

The molarity of a solution can be calculated by dividing the number of moles of the substance by its volume.

However, the number of moles of a substance must first be calculated using the following expression:

no of moles = 55g ÷ 111g/mol

no of moles = 0.49mol

Molarity of CaCl2 solution = 0.49mol ÷ 0.78L

Molarity of CaCl2 solution = 0.64M

Therefore, the molarity of a solution with 55 grams of CaCl2 dissolved in 0.78 L is 0.64M.

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Answer:

8.22 g/dm³

Explanation:

Applying,

PV = nRT............... Equation 1

Where P = pressure of krypton, V = Volume of krypton, n = number of moles, R = molar gas constant, T = Temperature

But,

number of mole (n) = mass(m)/molar mass(m')

n = m/m'.............. Equation 2

Substitute equation 2 into equation 1

PV = mRT/m'

P = (m/V)(RT)/m'................ Equation 3

Also,

Density (D) = Mass(m)/Volume(V)

D = m/V.............. Equation 4

Substitute equation 4 into equation 3

P = DRT/m'

D = Pm'/RT.................... Equation 5

From the question,

Given: P = 3.00 atm, T = 100°C = (273+100) = 373 K, m' = 83.8 g/mol

Constant: R = 0.082atm.dm³.K⁻¹.mol⁻¹

Substitute these values into equation 5

D = (3×83.8)/(0.082×373)

D = 251.4/30.586

D = 8.22 g/dm³

 The density of krypton gas is 8.22 g/dm³

Density of any substance is its mass per unit volume.

By ideal gas law

PV = nRT

Where p = pressure is 3.00 atm,

t = temperature is 100 °C = 273 + 100 = 373 K

Molar mass = 83.8 g/mol

R = constant is 0.082 atm.

[tex]\rm Number\;of \;moles= \dfrac{mass}{molar\;mass}[/tex]

Substituting the equation in 1

P = (m/V)(RT)/m'

Now, density = m/V

Then,

[tex]\rm D = \dfrac{Pm'}{RT}[/tex]

[tex]\rm D = \dfrac{3\times 83.8}{0.082\times373} = 8.22 g/dm^3\\[/tex]

Thus, the density is 8.22 g/dm3.

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Answer:

It would be half an half because it depends on the plant and location

Explanation:

It would be half an half because it depends on the plant and location.

The kingdom Plantae contains eukaryotes that are mostly photosynthetic.

Algae and fungi were once included in the plant kingdom, which historically included all living creatures that were not animals; however, all modern definitions of Plantae omit these organisms along with some algae and prokaryotes (the archaea and bacteria).

Green algae and Embryophyta are included in the concept of plants as belonging to the clade Viridiplantae (Latin for "green plants"), which is sister to the Glaucophyta (land plants).

Therefore, It would be half an half because it depends on the plant and location.

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Answer:

-72.8 joules

Explanation:

just finished the test

Answer:

Explanation:

The mass of the sun is about 1.98 x 10^30 kilograms. The mass of the earth is 5.97x 10^24 kilograms.

1.98 x 10^30 / 5.97x 10^24 = 331658 times greater

Answer:

Explanation:

The mass of the sun / the mass of the earth

= 1.98 x 10^30 / 5.97x 10^24

= 3.32 x 10^5 times greater

Answer:

The piston will move downwards because the gas particles will occupy less volume than before.

Explanation:

Referring to Boyle's Law at constant temperature, the pressure P of a gas varies inversely with its volume V

                        PV = K

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

                        P ∝ [tex]\frac{1}{V}[/tex]

Answer:

Explanation:

Radon is radioactive.

Radon is a naturally occurring radioactive gas.  

Radon causes cancer.

Breathing radon can increase your risk of developing lung cancer.  

No immediate symptoms.  

You must test for radon.  

Radon is present indoors and outdoors.  

Radon can build up in any building.

Answer: No but I have a three elmos dolls in my basement

Explanation:

Answer:

Yes

Explanation:

The expansion of the universe is the increase in distance between any two given gravitationally unbound parts of the observable universe with time. It is an intrinsic expansion whereby the scale of space itself changes. The universe does not expand "into" anything and does not require space to exist "outside" it.

Answer:

Gay-Lussac's Law

Explanation:

The pressure is directly proportional to the absolute temperature under constant volume. This states the Gay-Lussac's law. The equation is:

P1T2 = P2T1

Where P is pressure and T absolute temperature of 1, initial state and 2, final state of the gas.

That means the right option is:

- Gay-Lussac's Law

Answer Is Any Real Numbers, Such As 6,15,21.