In the reaction, 2H2(g) + O2(g)
which the reactants appear is:
2H2O(1), the phase of matter in
a) solid.
b) liquid.
c) gas.
d) plasma.

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:

[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: true

Explanation:

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:

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.

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:

I guess this answer is c

yh

Answer:

b. (Actual yield ÷ theoretical yield) x 100

Explanation:

The percent yield will be a ratio of collected or actual yield to the theoretical yield. Like any percentage, you are determining a part of a whole. You multiply by 100 to convert your decimal answer from the division into a percentage.

Answer:

49.1 g

Explanation:

First we convert 9.67x10²³ atoms of oxygen into moles, using Avogadro's number:

Then we calculate how many P₃O₉ moles there would be with 1.60 O moles:

Finally we convert 0.18 P₃O₉ moles into grams, using its molar mass:

The caliper is a component which is used by a disc brake system for performing its function.

The disc braking system consist of components such as disc/rotor, a brake calliper and brake pads. When the brake pedal is pushed, brake fluid creates pressure that produces friction.

So we can conclude that the caliper is a component which is used by a disc brake system for performing its function.

Learn more about system here: https://brainly.com/question/14323743

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:

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:

fire > rocks > air

Sulfate - SO4^-2

Sulfite - SO3^-2

Hydrogen Sulfate - HSO4-

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:

it's a temperature where a solid will melt

Answer:

32 mL

Explanation:

To answer this question we'll use Charles' law, which relates the temperature and volume of a gas at constant pressure:

V₁T₂=V₂T₁

Now we convert the given temperatures to K:

And given that V₁ = 45 mL, we can input the data:

And solve for V₂:

Answer:

Non-metal

Explanation:

A non-metal is a substance that possesses the following characteristics:

- It is brittle i.e can break easily

- It does not conduct heat and electricity

- It is not lustrous i.e does not shine when polished.

According to this question, LEEN was observing the physical properties of elements in order to classify them. He found that the first element was dull, brittle, and did not conduct heat. This makes it a NON-METAL.

Answer:

The correct answer is - [tex]\frac{P}{4}[/tex].

Explanation:

By the ideal gas equation is PV=nRT, the relation between pressure and volume can be drive if the temperature remains constant:

At constant temperature, for a fixed amount of gas, P∝

so the pressure is inversely proportional to volume. Therefore, if the volume is increased in this condition the pressure will decrease in the same manner and A decrease in the volume will lead to an increase in pressure.

Volume increased here = four times = 4V

pressure is P will decrease four times = P/4

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:

laboratory use the organic substances dissolve in water methanol or ethanol then Sinha to rise iron chloride solution is added a transient permanent coloration usually purple green or blue indicate the presence of a funnel or an hall

Balanced equation for Fe reacting with [tex]Cl_2[/tex]

[tex]2Fe + 3Cl_2[/tex] → [tex]2FeCl_3[/tex]

Iron filings are small shavings of ferromagnetic material.

When hydrochloric acid (HCl) reacts with iron filings (Fe) a dissolving metal reaction occurs with the Fe being converted to iron chloride ([tex]FeCl_2[/tex]) and hydrogen ([tex]H_2[/tex]).

The balanced equation is:

[tex]Fe + 2HCl[/tex] → [tex]FeCl_2 + H_2[/tex]

Note that reaction only produces [tex]FeCl_2[/tex] and not [tex]FeCl_3[/tex]. To make [tex]FeCl_3[/tex] you have to get more forcing and react Fe with chlorine gas ([tex]Cl_2[/tex]) at elevated temperature.

Since we are balancing equations here, below is the balanced equation for Fe reacting with [tex]Cl_2[/tex] (offered at no extra charge):

[tex]2Fe + 3Cl_2[/tex] → [tex]2FeCl_3[/tex]

Learn more about iron fillings here:

https://brainly.com/question/21819285

#SPJ2

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:

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:

just downloud smart

Explanation:

thank me later