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fredd [130]
4 years ago
13

What characteristic of an element’s atoms always determines the element’s identity?

Chemistry
1 answer:
Anna11 [10]4 years ago
3 0

Answer:

hporntue dhdjehwgs r. rvegdyfuee

Explanation:

ehehrhrhrhrhrhrhr. dvdhdhrhrhehehr f fbdhehrgdgdhehd dbdh

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Assoli18 [71]
By holding down the soil
8 0
4 years ago
Read 2 more answers
What volume of H2O is formed at stp when 6.0g of Al is treated with excess NaOH?
Ne4ueva [31]

Answer : The volume of H_2O is 14.784 L.

Solution : Given,

Mass of Aluminium = 6 g

Molar mass of Aluminium = 27 g/mole

First we have to calculate the moles of aluminium.

Moles of Al = \frac{\text{ Given mass of Al}}{\text{ Molar mass of Al}}=\frac{6g}{27g/mole}=0.22moles

The given balanced reaction is,

2NaOH+2Al+6H_2O\rightarrow 2NaAl(OH)_4+3H_2

From the reaction, we conclude that

2 moles of Al react with the 6 moles of H_2O

0.22 moles of Al react with \frac{6}{2}\times 0.22=0.66moles of H_2O

At STP,  1 mole contains 22.4 L volume

As, 1 mole of H_2O contains 22.4 L volume of H_2O

0.66 moles of H_2O contains (22.4)\times (0.66)=14.784L volume of H_2O

Therefore, the volume of H_2O is 14.784 L.                                                                                        

8 0
3 years ago
Which of the following is an acid-base indicator? Hydrochloric acid
Advocard [28]
D phenolphthalein is the answer
4 0
4 years ago
You start with 1 L of CO2 at standard temperature and pressure in a closed container. If you raise the temperature of the gas, t
pychu [463]

Answer:

Increase

Explanation:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

If the initial temperature and pressure is standard,

Pressure = 1 atm

Temperature = 273.15 K

then we increase the temperature to 400.0 K, The pressure will be,

1 atm / 273.15 K = P₂/400.0K

P₂ = 1 atm × 400.0 K / 273.15 K

P₂ = 400.0 atm. K /273.15 K

P₂ = 1.46 atm

Pressure is also increase from 1 atm to 1.46 atm.

8 0
3 years ago
Which two functional groups react to form an easter linkage?
7nadin3 [17]

Answer: You know that monomers that are joined by condensation polymerization have two functional groups. You also know (from Part 6) that a carboxylic acid and an amine can form an amide linkage, jand a carboxylic acid and an alcohol can form an ester linkage.

5 0
3 years ago
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