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yKpoI14uk [10]
4 years ago
7

If an atom carries a neutral charge, it is called a(n)

Chemistry
1 answer:
Paul [167]4 years ago
6 0
If an atom carries a neutral charge it's a neutron 
lol
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What mass of Na2SO4 is needed to make 2.0 L of 3.0 M solution (Na = 23 g; S = 32 g; O = 16 g)
julia-pushkina [17]

Answer: 710.5g

Explanation:

Moles of Na2SO4 = conc. x volume(dm3)

= 2 x (2500cm3/1000)

= 5 mol

Mass of Na2SO4 = moles x molar mass

= 5 x ((23 x 2) + 32.1 + (16 x 4))

= 710.5g

3 0
3 years ago
Determine how many grams of silver would be produced, if 12.83 x 10^23 atoms of copper react with an excess of silver nitrate. G
AnnyKZ [126]
1) Chemical equation

Cu + 2AgNO3 ---> Cu (NO3)2 + 2Ag

2) molar ratios

1 mol Cu: 2 moles AgNO3 : 1 mol Cu (NO3)2 : 2 mol Ag

3) Convert 12. 83 * 10^23 atoms of Cu in moles

12.83 * 10 ^ 23 atoms / (6.02 * 10^23 atoms / mol) = 2.131 mol Cu

4) Use the proportions

2.131 mol Cu * 2 mol Ag / 1 mol Cu = 4.262 mol Ag

5) Use the atomic mass of silver to convert 4.262 mol in grams

mass = number of moles * atomic mass = 4.262 mol * 107.9 g / mol = 459.9 grams

Answer: 459.9 g
5 0
3 years ago
2. Have someone hold the mirror for you, slowly move at least 3 m away from the it.
Ahat [919]

Answer: Slowly move at least 3 m away from the side mirror. Observe your image as you ... Compare the images formed in different mirrors. ... but if i stand 3m away, even though there is no light, it reflects the other material it can ... is transparent so you cannot see yourself much in the mirror, that is my observation.

Explanation:

3 0
3 years ago
If you can answer this question I will mark you BRAINLIEST
11111nata11111 [884]

Answer:

cause  the ectonic plates moving are what made

Explanation:

8 0
3 years ago
In a single replacement reaction, the chloride ion in NaCl can be replaced
MakcuM [25]

Answer:

c. fluorine

Explanation:

A single replacement reaction is defined as the chemical reaction in which a strong molecule replaces the weak molecule from a compound.

In a single replacement reaction, the chloride ion in NaCl can be replaced     by fluorine and gives Sodium fluoride as fluorine (F) is stronger than chlorine (Cl) and from other given molecules also. So the single replacement reaction between NaCl and F will be:

NaCl + F2 => NaF + Cl2

Hence, the correct answer is "c. fluorine".

4 0
3 years ago
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