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
Dennis_Churaev [7]
3 years ago
10

!!PLEASE ANSWER!! 24 PTS!!

Chemistry
1 answer:
Thepotemich [5.8K]3 years ago
6 0

1.magnesium

2.magnesium

You might be interested in
A 0.75M solution of CH3OH is prepared in 0.500 kg of water. How many moles of CH3OH are needed?
4vir4ik [10]

Answer:

We need 0.375 mol of CH3OH to prepare the solution

Explanation:

For the problem they give us the following data:

Solution concentration 0,75 M

Mass of Solvent is 0,5Kg

knowing that the density of water is 1g / mL,  we find the volume of water:

                           d = \frac{g}{mL} \\\\ V= \frac{g}{d}  = \frac{500g}{1 \frac{g}{mL} } = 500mL = 0,5 L

Now, find moles of CH_{3} OH are needed using the molarity equation:

                           M = \frac{ moles }{ V (L)} \\\\\\molesCH_{3}OH  = M . V(L) = 0,75 M . 0,5 L\\\\molesCH_{3}OH = 0,375 mol

therefore the solution is prepared using 0.5 L of H2O and 0.375 moles of CH3OH,  resulting in a concentration of 0,75M

5 0
3 years ago
What element came from of the chemist who first published the periodic table?
Andrew [12]
<span>Dmitri Mendeleev published first the periodic. He didn't "discover" any elements but predicted where some would be on his table. These included Gallium and Germanium.</span>
6 0
3 years ago
How to convert f to c without a calculator ​
nikdorinn [45]

Answer:

Without a calculator, there are many means to convert Celsius to Fahrenheit. Multiply the Celsius temperature by 1.8 and add 32 to get the Fahrenheit conversion With this method you get the exact temperature conversion degree.

Explanation:

7 0
3 years ago
Which substance has a nonpolar covalent bonds? <br><br> Cl2<br> SO3<br> SiO2<br> CCl4
Nikolay [14]

Answer:

Substance with a nonpolar covalent bonds is Cl_2.

Explanation:

Polar covalent compound: This compound is formed when difference in electronegativity between the atoms is present. When atoms of different elements combine, it results in the formation of polar covalent bond. For Example: CO_2,NO_2 etc..

Non-polar covalent compound: This compound is formed when there is no difference in electronegativity between the atoms. When atoms of the same element combine, it results in the formation of non-polar covalent bond. For Example: N_2,O_2 etc.

Substance with a nonpolar covalent bonds is Cl_2.

7 0
3 years ago
“The maximum amount of energy that can be used to do work.” This statement describes which measure?
Elza [17]
Free energy is the amount of energy that can do work.

Free energy is the internal energy of a system less the amount of energy that cannot perform work. 
7 0
3 years ago
Read 2 more answers
Other questions:
  • A liquid is considered an acid if it has a lot of
    8·1 answer
  • What is necessary in order to build an ionic compound?
    10·1 answer
  • A 4.000 g sample of iron was heated from 0.0°C to 21.0°C. If it has a specific heat of 0.440 kJ/kg °C, how many kilojoules of he
    5·1 answer
  • What is rises when boilings happen?​
    5·2 answers
  • Consider the following enthalpy diagram and enthalpies of intermediate and overall chemical reactions.
    12·2 answers
  • Which describes a covalent bond?
    15·1 answer
  • How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the follo
    6·1 answer
  • A shift of a cup of through
    7·2 answers
  • What inference can be drawn from the graph?
    13·1 answer
  • For the following problem convert both the reactants to moles and balance chemical equationsThe reaction of 167 g Fe2O3 with 85.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!