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V125BC [204]
3 years ago
12

Atomic mass - Atomic Number = protons electrons Average Mass neutrons

Chemistry
1 answer:
kiruha [24]3 years ago
6 0

Answer: neutrons

Explanation:

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Which generalized equation represents a single displacement reaction?
valentinak56 [21]

ans is A +BC → AC+ B

a single element, B, is displaced in the reaction by another element, A. so its a single displacement reaction

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4 years ago
When determining the specific heat from a given metal in a calorimeter the mass of the water remains constant, but the mass of t
alexandr1967 [171]
The heat is hotter than cold                                                                                                                                                                                  
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4 years ago
Given the problem below, what would the first step be in solving it?
Hoochie [10]

Answer:

First step would be convert to moles

Final Answer: 37.8 g of NaCl

Explanation:

The reaction is:

2Na + Cl₂ → 2NaCI

We convert the mass of each reactant to moles:

18 g . 1mol /23g = 0.783 moles of Na

23g . 1mol / 70.9g = 0.324 moles of chlorine

We use the mole ratio to determine the limiting reactant:

Ratio is 2:1. 2 moles of Na react to 1 mol of chlorine

Then, 0.783 moles of Na, may react to (0.783 . 1)/2 = 0.391 moles.

Excellent!. We need 0.391 moles of Cl₂ and we only have 0.324 moles available. That's why the Cl₂ is our limiting reactant.

We use the mole ratio again, with the product side. (1:2)

1 mol of Cl₂ can produce 2 moles of NaCl

Then, our 0.324 moles of gas, may produce (0.324 . 2)/1 = 0.648 moles

Finally, we convert the moles to grams:

0.648 mol . 58.45g/mol =

4 0
3 years ago
A plant grows into a shrub a physical or chemical change?<br>Explain why?
kherson [118]

A plant growing into a shrub is an example of a chemical change because once the plant is in its shrub form you can't revert it back.

8 0
3 years ago
What term best describes when cryptography is applied to entire disks instead of individual files or groups of files?
Step2247 [10]

Answer:

Full disk encryption

Explanation:

Disk encryption is a protection technique used in securing information by converting it into unreadable codes that cannot decrypt in other to prevent unauthorized persons from accessing the information.

When cryptography is applied to entire disks, it is termed Full disk encryption.

6 0
3 years ago
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