1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shepuryov [24]
3 years ago
15

What do many bases have in common

Chemistry
1 answer:
Assoli18 [71]3 years ago
8 0

Answer:

they often form hydroxide ions

Explanation:

You might be interested in
You dig a small hole in the soil and the next day it rains. The hole fills with water but does not
MakcuM [25]
The soil is mostly made of clay
3 0
3 years ago
Cell Walls Function (short)
bazaltina [42]
The main functions of the cell wall are to provide structure, support, and protection for the cell.
6 0
4 years ago
An oxide of nitrogen contains 30.45 mass % N.
N76 [4]

An oxide of nitrogen contains 30.45 mass % N, if the molar mass is 90± 5 g/mol the molecular formula is N₂O₄.

<h3>What is molar mass?</h3>

The molar mass of a chemical compound is determined by dividing its mass by the quantity of that compound, expressed as the number of moles in the sample, measured in moles. A substance's molar mass is one of its properties. The compound's molar mass is an average over numerous samples, which frequently have different masses because of isotopes.

<h3>How to find the molecular formula?</h3>

The whole-number multiple is defined as follows.

Whole-number multiple = \frac{molar mass (g/mol)}{empirical formula mass (g/mol)}

The empirical formula mass is shown below.

Mw of empirical formula = Mw of N+ 2 x (Mw of O)

                                      = 14.01 g/mol + 2 x (16.00 g/mol)

                                      = 46.01 g/mol

With the given molar mass or the molecular formula mass, we can get the whole-number multiple for the compound.

Whole-number multiple = \frac{90 g/mol }{46.01 g/mol} ≈ 2

Multiplying the subscripts of NO2 by 2, the molecular formula is N(1x2)O(2x2)= N2O4.

To learn more about molar mass visit:

brainly.com/question/12127540

#SPJ4

5 0
2 years ago
What is the percent composition of YAG (Yttrium Aluminum Garnet). The formula for
andre [41]

Answer:   Y  21.38 % , Al  32.44 % and O 46.16 %

Explanation: Molar mass of YAl5O12 is 88.91 + 5·26.98+12·16

= 415.81 g/mol

  m-% ( Y) = 88.91 / 415.81 = 21.38 % ,     m-% (Al) = 5·26.98 / 415.81 =

  32.44 %  , rest is Oxygen

3 0
3 years ago
For a chemical reaction to be spontaneous at all temperatures, which of the following conditions must be met? a. ΔS° &gt; 0, ΔH°
ladessa [460]

Answer:

b. ΔS° > 0, ΔH° < 0

Explanation:

According the equation of Gibb's free energy -

∆°G = ∆°H -T∆°S

∆°G = is the change in gibb's free energy

∆°H = is the change in enthalpy

T = temperature

∆°S = is the change in entropy .

And , the sign of the  Δ°G , determines whether the reaction is Spontaneous or non - Spontaneous or at equilibrium ,

i.e. ,

if

  • Δ°G < 0 , the reaction is Spontaneous
  • Δ°G > 0 , the reaction is non - Spontaneous
  • Δ°G = 0 , the reaction is at equilibrium

The reaction has the value for ∆°H < 0 i.e. negative, and ∆°S > 0 i.e. , positive

Now ,

∆°G = ∆°H -T∆°S

= ( - ∆°H ) - T( + ∆°S )

= ( - ∆°H ) - T( ∆°S )  

∆°G = negative

Hence ,

Δ°G < 0 , the reaction is Spontaneous  .

6 0
3 years ago
Other questions:
  • Which scientist invented a model of the atom that most closely resembles the modern electron cloud model?
    15·1 answer
  • True or false Questioning is the beginning of the scientific inquiry process.
    10·2 answers
  • Nebulae are enormous clouds in outer space.they are made mostly of hydrogen gas ,helium gas and dust , some nubelae glow brightl
    11·1 answer
  • Which of the following is not a correct chemical equation for a double displacement reaction? (D?)
    9·1 answer
  • A(n) ___chemical equation has the same number of atoms of each element on both sides.
    9·1 answer
  • Need help !!!!! ASAP
    9·1 answer
  • Which of the following experiments raises ethical concerns?
    15·1 answer
  • Which is element has atoms with the strongest attraction for electrons in a chemical bond
    8·2 answers
  • When the volume of the gas is 8L what is the pressure being exerted upon it?
    9·1 answer
  • At 1 atmosphere and 20 degrees Celsius, all samples of H20(l) must have the same
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!