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
Alik [6]
3 years ago
11

A certain element has 12 neutrons and 12 protons. Assume that this atom has an

Chemistry
1 answer:
KATRIN_1 [288]3 years ago
5 0
The element is magnesium
You might be interested in
A covalent bond formed when 2 atoms share 6 valence electrons between them is a ______ bond
sleet_krkn [62]
COVALENT BOND IS THE BOND EXISTING BETWEEN 2 ATOMS THAT SHARE 6 ELECTRONS
5 0
2 years ago
Making methanol the element hydrogen is not abundant in nature, but it is a useful reagent in, for example, the potential synthe
stealth61 [152]
ΔG⁰ = ΔH⁰ - TΔS
ΔH⁰ = Hf,(CH₃OH) - Hf,(CO) = -238.7 + 110.5 = -128.2 kJ/mol
ΔS = S(CH₃OH) - S(CO) - 2S(H₂) = 126.8 - 197.7 - 2 x 130.6 = -332.1 J/mol.K
So 
ΔG⁰ = - 128200 + 332.1 T
For the reaction to be spontaneous:
ΔG⁰ < 0
So: -128200 + 332.1 T < 0
332.1 T < 128200
T < 386.028 K
5 0
2 years ago
Find the volume of 20g of H₂ at STP<br><br>​
ANEK [815]

Answer:224

Explanation:

We should answer it with Stoichiometry

We say: 20 g H2× (1 mol/ 2g)× ( 22.4 lit/ 1 mol) = 224

Means: we have 20 grams and every 2g H2, equals to 1 mol of it and every 1 mol of H2, equals to 22.4 lit( because of STP)

hope you got this:)

6 0
3 years ago
Why is it necessary to obtain 25 to 50 hairs from this woman?
Vedmedyk [2.9K]

To get the correct data

5 0
2 years ago
What describes the current model of an atom​
vladimir2022 [97]

Answer:

A tiny sense positively charge core called a nucleus in which nearly all the mass is concentratedm

8 0
3 years ago
Other questions:
  • What method would best allow these three different scientists to demonstrate their concepts?
    7·1 answer
  • How many grams of bromine (Br2) are there in 2.51x1024 atoms?
    13·1 answer
  • MgO + H2O = Mg(OH)2 is an example of a _____ chemical reaction.
    6·1 answer
  • How many moles of oxygen are needed to react with 87 grams of aluminum
    11·1 answer
  • The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare pro
    7·1 answer
  • 1. In a Stock system name such as iron(III) sulfate, the Roman numeral tells us (a) how many atoms of Fe are in one formula unit
    9·1 answer
  • What plants need in order for photosynthesis to occur
    11·1 answer
  • What is Delta.Hrxn for the overall reaction?<br> kJ
    14·2 answers
  • You're going on a plane from Alaska to Florida and you're taking your bike. It's the middle of the winter. You fill up your tire
    15·1 answer
  • Write balanced nuclear equations for the following:(a) β⁻ decay of silicon-32
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!