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
Elanso [62]
2 years ago
13

What do sodium and magnesium have in common?

Chemistry
1 answer:
lara [203]2 years ago
7 0

Answer:

daddy will help

Explanation:

uhhhhhhhhhhhhhhhhhhh

You might be interested in
Smooth tissues that cover surfaces are________
vovikov84 [41]
It is epithelial <span>tissues <span> it is a tissues that goes through out the whole body i think.</span></span>
5 0
2 years ago
Molarity is represented by the symbol m true or false?
Allisa [31]
The answer to your question is False, my good man! Hope this helps!

3 0
2 years ago
Read 2 more answers
Which of the following factors would reduce the yield of a reaction?
NikAS [45]

The products being more stable than the reactants is the factor which would reduce the yield of a reaction and is denoted as option B under standard conditions.

<h3>What is a Chemical reaction?</h3>

This is the process in which one or more substances which are referred to as reactants are converted into new substances which we call the products.

A chemical reaction involves atoms exhibiting different bond formation so as to ensure they acquire an octet configuration and promotes proper stability of the products.

When the products are more stable than the reactants it means it is unable to form other products thereby decreasing the yield which is why it was chosen as the most appropriate choice.

Read more about Chemical reaction here brainly.com/question/11231920

#SPJ1

3 0
1 year ago
An aqueous solution of methylamine (ch3nh2) has a ph of 10.68. how many grams of methylamine are there in 100.0 ml of the soluti
ruslelena [56]

Answer:

3.4 mg of methylamine

Explanation:

To do this, we need to write the overall reaction of the methylamine in solution. This is because all aqueous solution has a pH, and this means that the solutions can be dissociated into it's respective ions. For the case of the methylamine:

CH₃NH₂ + H₂O <-------> CH₃NH₃⁺ + OH⁻     Kb = 3.7x10⁻⁴

Now, we want to know how many grams of methylamine we have in 100 mL of this solution. This is actually pretty easy to solve, we just need to write an ICE chart, and from there, calculate the initial concentration of the methylamine. Then, we can calculate the moles and finally the mass.

First, let's write the ICE chart.

       CH₃NH₂ + H₂O <-------> CH₃NH₃⁺ + OH⁻     Kb = 3.7x10⁻⁴

i)            x                                      0            0

e)          x - y                                  y            y

Now, let's write the expression for the Kb:

Kb = [CH₃NH₃⁺] [OH⁻] / [CH₃NH₂]

We can get the concentrations of the products, because we already know the value of the pH. from there, we calculate the value of pOH and then, the OH⁻:

The pOH:

pOH = 14 - pH

pOH = 14 - 10.68 =  3.32

The [OH⁻]:

[OH⁻] = 10^(-pOH)

[OH⁻] = 10^(-3.32) = 4.79x10⁻⁴ M

With this concentration, we replace it in the expression of Kb, and then, solve for the concentration of methylamine:

3.7*10⁻⁴ = (4.79*10⁻⁴)² / x - 4.79*10⁻⁴

3.7*10⁻⁴(x - 4.79*10⁻⁴) = 2.29*10⁻⁷

3.7*10⁻⁴x - 1.77*10⁻⁷ = 2.29*10⁻⁷

x = 2.29*10⁻⁷ + 1.77*10⁻⁷ / 3.7*10⁻⁴

x = [CH₃NH₂] = 1.097*10⁻³ M

With this concentration, we calculate the moles in 100 mL:

n = 1.097x10⁻³ * 0.100 = 1.097x10⁻⁴ moles

Finally to get the mass, we need to molar mass of methylamine which is 31.05 g/mol so the mass:

m = 1.097x10⁻⁴ * 31.05

<h2>m = 0.0034 g or 3.4 mg of Methylamine</h2>
3 0
3 years ago
Water molecules form hydrogen bonds to help in the process of water transport. Which property of water is described?
AlekseyPX
The property of water which is described in the lines above is <u>cohesion.
</u>It refers to the fact that water molecules stick to other water molecules, i. e. to themselves, as opposed to sticking to another material, which happens with adhesion. Water and capillaries don't have any connection.<u>
</u>
7 0
2 years ago
Other questions:
  • What else can I do to shrink my nose besides surgery?​
    10·1 answer
  • 39 Which Kelvin temperature is equal to 200.oC?(1) -73 K (2) 73 K (3) 200. K (4) 473 K
    10·1 answer
  • Temperature of 50g of methanol from 20 degrees Celsius to 70 degrees Celsius
    10·1 answer
  • 8Ft<br> 14 ft<br> What is the Surface Area?
    14·1 answer
  • I will mark you brainliest&lt;3
    5·1 answer
  • Volume is the quantity of two-dimensional space occupied by a liquid, solid, or gas.
    5·2 answers
  • 80cm^3 of oxygen gas diffussed through a porous holebin 50 seconds how long will it take 120cm^3 of nitrogen (iv) oxide to diffu
    14·1 answer
  • Chromium-48 decays. After 6 half-lives, how much of the original nuclei would remain if we started with 600 g?
    14·1 answer
  • Which of the following statements are TRUE of buffer solutions? 1. A buffer solution can be made by mixing equal concentrations
    11·1 answer
  • All camels are basically similar in structure. They have developed adaptations for
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!