a) ¿De qué trata el cuento que leíste?
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Answer:

c seems like the best answer

Answer:Ca

Explanation:

Answer:

96.92 K

Explanation:

Applying,

V/T = V'/T'..................... Equation 1

Where V = Initial Volume, T = Initial Temperature, V' = Final Volume, T' = Final Temperature.

Make T the subject of the equation

T = VT'/V'................. Equation 2

From the question,

Given: V = 268 mL, V' = 824 mL, T' = 25°C = (25+273) = 298 K

Substitute these values into equation 2

T = (268×298)/824

T = 96.92 K

Hence the Initial temperature of Nitrogen gas is 96.92 K

Answer:

40.3044 grams.

Explanation:

Please mark brainliest

Answer:  There are 0.5 grams of barium sulfate are present in 250 of 2.0 M [tex]BaSO_{4}[/tex] solution.

Explanation:

Given: Molarity of solution = 2.0 M

Volume of solution = 250 mL

Convert mL int L as follows.

[tex]1 mL = 0.001 L\\250 mL = 250 mL \times \frac{0.001 L}{1 mL}\\= 0.25 L[/tex]

Molarity is the number of moles of solute present in liter of solution. Hence, molarity of the given [tex]BaSO_{4}[/tex] solution is as follows.

[tex]Molarity = \frac{mass}{Volume (in L)}\\2.0 M = \frac{mass}{0.25 L}\\mass = 0.5 g[/tex]

Thus, we can conclude that there are 0.5 grams of barium sulfate are present in 250 of 2.0 M [tex]BaSO_{4}[/tex] solution.

Answer:

Relative atomic mass

Explanation:

Explanation:

Na=23

cl2=35.5×2=71

NaCl=23+35.5=58.5

2Na + Cl2== 2NaCl

2. : 1

20/23=2(x)/71

(71×20)/(23×2)=x

x=30.87g

Answer:

No

Explanation:

Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture.

Answer:

25.4

Explanation:

PLZ mark me brainlist

Answer: 114.22852 grams

HOPE THIS HELPS

Answer:

132.15

Explanation:

Molar mass N = 14.00

Molar mass H = 1.01

Molar mass H4 = 1.01 x 4 = 4.04

Molar mass NH4 = 14.00 + 4.04 = 18.04

Molar mass (NH4)2 = 18.04 x 2 = 36.08

Molar mass S = 32.07

Molar mass O = 16.00

Molar mass O4 = 16.00 x 4 = 64.00

Molar mass SO4 = 32.07 + 64.00 = 96.07

Molar mass (NH4)2SO4 = 36.08 + 96.07 = 132.14

I know number 1 is 58.04 g/mol

Answer:

5857.6 J

Explanation:

Everything is in the correct units so solve normally

q= 100*4.184*14

q= 418.4*14

q= 5857.6 J

Answer:

2.00X10^5 x 20gNe/6.02x10^23=6.46x10^-18 but books answer is 797.

Explanation:

The mass is grams 2.00 x 10⁵ atoms of naturally occurring neon is 6.70 x 10⁻¹⁸g.

Neon is a chemical element in the periodic table. Its atomic number is 10, and it is a Nobel gas. It is a colorless, monatomic, and odorless gas.

Mass is the quantity of matter in a physical body. It can be calculated by the volume and density of the element. The mass can be calculated by the number of atoms.

Given the number of atoms of Ne is 2.00 x 10⁵

The molar mass Ne = 20.18 g/mol

6.022 x 10²³ Ne atoms have a mass of 20.18 g.

The number of atoms is divided by the Avogadro number and the mass of the element.

2.00 x 10⁵ atoms Ne has mass = (2.00*10⁵) / (6.022*10²³) x 20.18 g =

6.70 x 10⁻¹⁸g.

Thus, the mass is grams 2.00 x 10⁵ atoms is 6.70 x 10⁻¹⁸g.

To learn more about neon, refer to the link:

https://brainly.com/question/5605139

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Answer:

UK stop spending a lot on clothes if u don't wear half of them

Answer:

1) some of the gas maybe metal but non metal directly refers it self to not begin metal

2) gases are present in only air . non metals are available in solid form too

Answer:

Explanation:

The number of molecules can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

N = 4.67 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

It adds waste and also removes valuable recources that can't  be naturally renewed. It also releases toxins and gas...

Explanation:

I don't reallly have an explenation so...

Answer:

the light would be less bright

Explanation:

Explanation:

HCL you can do it yourself .try again

Answer:

(NH 4) 3P Ionic fu ammonium phosphide 3) Ca 3N 2 Ionic fu calcium nitride 4) Al( NO B) ... If there is a multi-valent metal present, write both the stock and classical name. ... 66 * 10^(23)"atoms of H" The first thing to do here is write the chemical ...

Explanation:

just follow the instructions below.

hope it helps.

#CARRYONLEARNING

Answer:

Strong base

Explanation:

Anhydrous sodiumtrioxocarbonate(IV) Na2CO3 and crystalline sodiumtrioxocarbonate(IV) Na2CO3 are two forms of sodiumtrioxocarbonate(IV) Na2CO3. The Solvay process is the most common name for the sodiumtrioxocarbonate(IV) Na2CO3 production process.

Still, as Na2CO3 reacts, it produces CO3. That tends to be a weak acid's conjugate base. As a result of the removal of H+, carbonic acid was formed (Strong Base)

Explanation:

Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids. Temperature also affects the speed of sound. Gases: The speed of sound depends upon the properties of the medium it is passing through.

Answer:

all of them

Explanation:

As talking about sound,all of them are responsible for this.Sound can travel in three mediums but if differs according to speed as it travels fastest in solid,faster in liquid and slow in gases.

hope it helps u and keep smiling :)

Answer:

-846 kJ

Explanation:

Using Henderson Hasselbach's law,

2Al + 3/2 O2 -> Al2O3    H = -1670 kJ

-(2Fe + 3/2 O2 -> Fe2O3) = Fe2O3 -> 2Fe + 3/2 O2    H = 824 kJ

-1670 kJ + 824kJ = -846 kJ

Answer:

3000000000000009000000