How many MOLECULES are in 50.0 grams of lithium phosphate

Answer:

1. Observing

2. Classifying

3. Predicting

4. Making a hypothesis

5. Experimenting

6. Measuring

7. Communicating

8. Making an inference

9. Constant

10. Interpreting data

Explanation:

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Answer:

1

Explanation:

Physical change does not cause chemical energy.

Answer:

fire > rocks > air

Sulfate - SO4^-2

Sulfite - SO3^-2

Hydrogen Sulfate - HSO4-

Answer:

−26.4 kcal

Explanation:

According to Hess's law, the total heat changes occuring during a chemical reaction are independent of path.

2CO(g)+O

2

(g)⟶2CO

2

(g)N ,

ΔH=−135.2 kcal

The above reaction is reversed and halved, we get-

CO

2

(g)⟶CO+

2

1

O

2

(g)

ΔH=

2

135.2

kcal ....(i)

C+O

2

(g)⟶CO

2

(g)

ΔH= -94 kcal ...(ii)

Required equation

C(s)+

2

1

O

2

(g)⟶CO(g);

Adding Eqs. (i) and (ii), we get

C(s)+

2

1

O

2

(g)⟶CO(g),

ΔH =

2

135.2

−94=−26.4 kcal

Answer:

the second one

Explanation:

metal doesn't act like a magnet because the domains don't have a preferred direction of alignment. Magnets are all aligned in a specific direction.

Answer:

it's a temperature where a solid will melt

Answer:

Option 3 is correct.

The atomic nucleus of each element has a unique number of protons. Therefore, the energy of the electron layers of the atoms of each element is unique.

If we have the energy released from each electron transfer between the layers of the atom, we can identify the element.

Answer:

950 torr

Explanation:

Step 1: Given data

Step 2: Calculate the final pressure of the gas

If we assume ideal behavior and constant temperature, we can calculate the final pressure of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

P₂ = P₁ × V₁/V₂

P₂ = 760 torr × 1.00 L/0.800 L = 950 torr

Answer:

See Explanation

Explanation:

An electrolyte is a solution which is able to conduct electricity. An electrolyte conducts electricity because of the presence of ions which move around in the solution.

Ba(OH)2 and H2SO4 are composed of ions; these ions are the charge carriers in solution and are responsible for the conductivity of the solution and the glow of the bulb.

When Ba(OH)2 and H2SO4 are mixed, the following reaction occurs;

Ba(OH)2(aq) + H2SO4(aq) -------->BaSO4(s) + 2H2O(l)

The formation of the BaSO4(s) precipitate removes the ions that are responsible for the conductivity of the solution hence the  light bulb of the conductivity apparatus dims and eventually fades completely.

Answer: true

Explanation:

Answer: D

Explanation: pH = - log( c). If c= 1.0 M. PH = 0, if c=0.001 M. PH = 3

Answer:b

Explanation:

ik

Answer:

Increased evaporationof water vapour from sea or land will increase rainfall

Answer:

Explanation:

increased evaporation of water vapor from sea to land will increase rainfall

Answer:

[tex]V_2=2.5m^3[/tex]

Explanation:

Hello!

In this case, according to the Charles' law as a directly proportional relationship between volume and temperature:

[tex]\frac{V_2}{T_2}=\frac{V_1}{T_1}[/tex]

Thus, in order to compute the final volume, V2, we obtain the following expression:

[tex]V_2=\frac{V_1T_2}{T_1}\\\\V_2=\frac{5m^3*300K}{600K}\\\\V_2=2.5m^3[/tex]

Best regards!

Answer:

What i would do is put it in the nearest sink or better yet a bathtub. because if it was violent, do you really want that everywhere?

Explanation:

:)

Answer:

b liquid

Explanation:

2H

2

(g)+O

2

(g)⟶2H

2

O(l) is the correction reaction as during formation of water both hydrogen and oxygen are in gaseous form and produces water in liquid form.

Answer:

0.25 mole of CO₂

Explanation:

We'll begin by calculating the mass of oxygen in 1 mole of carbon dioxide (CO₂). This is illustrated below:

Molecular formula of carbon dioxide

=> CO₂

Mass of oxygen in CO₂ = 2O

= 2 × 16

= 32 g

Thus, 1 mole of CO₂ contains 32 g of oxygen.

Finally, we shall determine the number of mole of CO₂ that contains 8 g of oxygen. This can be obtained as follow:

1 mole of CO₂ contains 32 g of oxygen.

Therefore, Xmol of CO₂ will contains 8 g of oxygen i.e

Xmol of CO₂ = 8/32

Xmol of CO₂ = 0.25 mole

Thus, 0.25 mole of CO₂ contains 8 g of oxygen.

Answer:

[tex]0.00153\ \text{gallons}[/tex]

Explanation:

[tex]1\ \text{milliliter}=0.000264172\ \text{gallons}[/tex]

The given volume of water is [tex]5.78\ \text{milliliters}[/tex]. So,

[tex]5.78\ \text{milliliters}=(5.78\times 0.000264172)\ \text{gallons}[/tex]

[tex]=0.00153\ \text{gallons}[/tex]

The volume of the given water in gallons is [tex]0.00153\ \text{gallons}[/tex].

Answer:

14.45 g of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2KClO₃ —> 2KCl + 3O₂

Next, we shall determine the mass of KClO₃ that decomposed and the mass of O₂ produced from the balanced equation. This can be obtained as follow:

Molar mass of KClO₃ = 39 + 35.5 + (16×3)

= 39 + 35.5 + 48

= 122.5 g/mol

Mass of KClO₃ from the balanced equation = 2 × 122.5 = 245 g

Molar mass of O₂ = 2 ×16 = 32 g/mol

Mass of O₂ from the balanced equation = 3 × 32 = 96 g

SUMMARY:

From the balanced equation above,

245 g of KClO₃ decomposed to produce 96 g of O₂.

Finally, we shall determine the mass of O₂ produced by heating 36.89 g of KClO₃. This can be obtained as follow:

From the balanced equation above,

245 g of KClO₃ decomposed to produce 96 g of O₂.

Therefore, 36.89 g of KClO₃ will decompose to produce =

(36.89 × 96)/245 = 14.45 g of O₂

Thus, 14.45 g of O₂ were obtained from the reaction.

Answer:

Tyrel is learning about a certain kind of metal used to make satellites. He learns that infrared light is absorbed by the metal. X-ray light is transmitted through the metal. ... Yes, light can cause the metal to get warm because light carries energy.

Answer:

FALSE!

Explanation:

Gymnosperms do use seeds but are exposed like the pine cones of pines. Angiosperms still have seeds, however, they flower or fruit.

Answer:

False

Explanation:

Answer:

420.7 degrees C

Explanation:

Use the formula V1/T1 = V2/T2 (Charles' Law) to find T2. Make sure to convert  your temperatures to Kelvin by adding 273 to the Celsius temperature.

V1 = 4.50 L

V2 = 10 L

T1 = 39.2 C = 312.2 K

Solve V1/T1 = V2/T2 for T2 and you get T2 = V2T1/V1

T2 = (10 L)(312.2 K) / (4.50 L) = 693.8 K

You can subtract 273 to get the temperature back to Celsius.

T2 = 693.8 - 273 = 420.7 degrees C

Answer:

carbon

Explanation:

The properties of carbon forms the basis for all life. Explanation: The atoms of carbon are found in the molecules of all living species.

Answer:

1.25 grams of chlorine.

Explanation:

Hello there!

In this case, since it is possible to define the parts per million of chlorine as the milligrams of chlorine per liters of water, in order to obtain the mass of chlorine in 2500 L, we proceed as follows:

[tex]ppm=\frac{mg}{L}\\\\mg=ppm*L[/tex]

In such a way, we plug in the given 0.500 ppm and 2500 L to obtain (in grams):

[tex]mg=0.500mg/L*2500L\\\\g=1250mg*\frac{1g}{1000mg}\\\\ g=1.25g[/tex]

Best regards!

Answer:

Ratio = 2 : 3 (Approx.)

Explanation:

Given:

Compound A = 1.278 g

Compound B = 1.904

Find:

Ratio

Computation:

Ratio = Compound A / Compound B

Ratio = 1.278 / 1.904

Ratio = 2 : 3 (Approx.)

Answer:

just downloud smart

Explanation:

thank me later

Answer:

the rate at which sulfur dioxide is being produced is 0.8993 kg per second

Explanation:

Given the data in the question;

we write the balanced chemical reaction

2H₂S + 3O₂ → 2SO₂ + 2H₂O

now we calculate the number of moles of oxygen by using an ideal gas equation; PV = nRT

n = PV/RT

so we substitute in our values

n = ( 0.77 × 1.01325 × 10⁵ × 994 × 10⁻³ ) / ( 8.314 × (170 + 273 )

n = 77552.1285 / 3683.102

n = 21.056 mol

so, moles of SO₂  produced = 2/3 × 21.056 = 14.0373 moles

Hence, the production rate will be;

⇒ 14.0373 × 64.066

= 899.3 g/s

= 0.8993 kg/s

Therefore, the rate at which sulfur dioxide is being produced is 0.8993 kg per second

Answer:

because they contains clues about what the earth was like in the past. different rocks from under only certain conditions and even the dullest gray lump of rock.