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
Leviafan [203]
2 years ago
7

Help me with this please ​

Chemistry
1 answer:
myrzilka [38]2 years ago
8 0

Explanation:

I can't guess it properly

You might be interested in
How do we determine the number of electrons?
Umnica [9.8K]
Assuming it has no electrical charge, your electron count would be equal to the atomic number.
8 0
2 years ago
The atomic mass of an imaginary element X is 30.7377 amu. Element X has three isotopes. One isotope has an isotopic mass of 30.5
ryzh [129]

Answer:

wuhwwisbsjsbsisjsbsjsjiw

Explanation:

bhajwjbw wjsjw bwuebe e

8 0
3 years ago
What is the concentration of an naoh solution that requires 15.0 ml of a 0.750 m h2so4 solution to neutralize 17.5 ml of naoh?
e-lub [12.9K]

So the first thing we must do is write a balanced equation for the reaction and we know the equation is balnced when all the species on the RHS is equal to the species on the LHS
                      2NaOH  +  H₂SO₄   →  Na₂SO₄<span>  +  2H₂O
</span>
So now it's time to identify what reactant you know the most for from the question (volume & conc. of H₂SO₄) and use that info to find the unknown (conc. of NaOH)

If 1000 ml  of H₂SO₄ contain 0.750 mol   [0.750 M is the amount of moles in 
                                                                       1 L (1000 ml)]
then let 15 ml of H₂SO₄ contain x mol     [15 ml is the amount of the acid that                                                                                  took part in the reaction]
    
⇒  x  =  \frac{15ml    *    0.750 mol}{1000 ml}
       
         = 0.01125 mol

Mole ratio of NaOH  to  H₂SO₄  can be obtained from the balanced equation
                 0 2NaOH  +  1H₂SO₄   →  Na₂SO₄  +  2H₂O

    mole ratio of   NaOH  to  H₂SO₄  is 2 : 1

∴ if mole of of H₂SO₄   =  0.01125 mol
   then moles of NaOH = (0.01125 mol) × 2
                                      = 0.0225 mol

If 17.5 ml of NaOH contain 0.0225 mol      [this was given in the question]
then let 1000 ml of NaOH contain  x

⇒ x  =  \frac{1000ml   * 0.0225 mol}{17.5 ml}
       
       = 1.286 mol

∴ concentration of NaOH is 1.286 mol/L 

8 0
3 years ago
Scientific Method
Leona [35]

Answer:

Problem,  Variables,  Hypothesis,  Research,  Procedure,  Data, Conclusion.

Explanation:

First, you have to know what the problem that you're talking about is. Then, you have to know the independent, dependent, and controlled variables are in order to make a hypothesis. Then do research about the topic. After that, you make the procedure your experiment, if that's what your doing. Then after the experiment, you find the data. Using that data, you make a conclusion.

4 0
3 years ago
19. Sunrise is at 7:33 in Greenwich and at local sunrise converted to GMT is at 14:31 a.m.
Akimi4 [234]

Answer:

Earlier, since the sun comes out first from east to west, and Nevada is east of California, it would be earlier.

Explanation

i belive the longitude would be 180 degrees

3 0
3 years ago
Other questions:
  • Using stoichiometry, determine the mass of powdered drink mix needed to make 1.0 M solution of 100 mL
    8·1 answer
  • . A dough that is high in fat and sugar, and sometimes eggs.
    5·2 answers
  • What element has 2 electrons in its outermost energy level and is in the 2nd period on periodic table?
    8·1 answer
  • Physical chemistry is picotechnology?
    10·1 answer
  • 5) If a car travels 60 miles for two hours, what is the average speed?
    8·1 answer
  • Someone please help! this is the last question<br>I only need help with B.<br><br>​
    8·1 answer
  • What is the overall charge of a Aluminum atom that loses 3 electrons​
    15·1 answer
  • How to find valency?​
    14·2 answers
  • Na3(PO4) + HCl yields NaCl + H3(PO4)​
    6·1 answer
  • How much heat does a 100. g sample of copper absorb when its temperature increases by 30.0°C? The specific heat of copper is 0.3
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!