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LuckyWell [14K]
4 years ago
13

What is the more common name for sodium hydroxide?

Chemistry
1 answer:
Anna71 [15]4 years ago
3 0
Caustic soda

Hope this helps
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If you have 1.4 grams of silver (Ag), how many moles of silver do you have?
creativ13 [48]

Answer: There are 0.0129 moles of silver present in 1.4 grams of silver (Ag).

Explanation:

Given: Mass of silver = 1.4 g

Number of moles is the mass of substance divided by its molar mass.

As molar mass of silver is 107.86 g/mol. Therefore, moles of silver are calculated as follows.

No. of moles = \frac{mass}{molar mass}\\= \frac{1.4 g}{107.86 g/mol}\\= 0.0129 mol

Thus, we can conclude that there are 0.0129 moles of silver present in 1.4 grams of silver (Ag).

3 0
3 years ago
Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.
Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

Explanation:

Q=mc\Delta T

Where:

Q = heat absorbed  or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

Specific heat of copper = c = 0.385 J/g°C

ΔT  = 39°C - 22°C = 17°C

Heat absorbed by the copper :

Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

5 0
4 years ago
What is the molarity of a solution with a volume of 974 mL containing 17 g of CuSO4
liberstina [14]

Answer : The correct option is, (A) 0.109 M CuSO_4

Solution : Given,

Mass of CuSO_4 = 17 g

volume of solution = 974 ml

Molar mass of CuSO_4 = 159.609 g/mole

Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

Molarity=\frac{w\times 1000}{M\times V_s}

where,

w = mass of CuSO_4 (solute)

M = molar mass of CuSO_4

V_s = volume of solution in liter

Now put all the given values in the above formula, we get the molarity of solution.

Molarity=\frac{(17g)\times 1000}{(159.609g/mole)\times (974ml)}=0.109mole/L=0.109M

Therefore, the molarity of the solution is, 0.109 M

5 0
4 years ago
Read 2 more answers
What is the relationship between the strength of the magnetic field and the deflection of the galvanometer needle?
Karo-lina-s [1.5K]

Answer:

Similarly, if magnet is held stationary and the coil is moved away and towards the magnet, the galvanometer shows deflection in similar manner. It is also seen that, the faster the change in the magnetic field, the greater will be the induced emf or voltage in the coil.

please mark me brilliance

3 0
2 years ago
Select all of the chirality centers in the structure. a selected atom will turn green.
scZoUnD [109]

Answer:

The answer is C is attached to four unique gatherings A, B C and D, Thus it frame two optical isomers as the perfect representations of one another.  

Explanation:

A critical class of isomers in which mixes have the equivalent sub-atomic recipe and structure, yet the distinction emerges from the introduction of the gatherings in the 3D space. Optical isomers are called as enantiomers.   Enantiomers are optical isomers whose identical representations are non-superimpose. They turn the plane enraptured light inverse way.   Optical action is characterized as the capacity of a choral atom to pivot the plane energized light. The enantiomers that pivots the plane energized light a clockwise way is called extraordinary, while the one that turns the plane spellbound light an anticlockwise way is called rotatory.  Basics  , Centrality is the major behind the optical movement of a natural atom.  Choral focus: A'C' particle in a particle turns into a choral focus when all the four valences of that molecule are fulfilled by synthetically unique gatherings.

4 0
3 years ago
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