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
Alja [10]
2 years ago
6

Almost all energy on Earth came from the blank

Chemistry
2 answers:
iren2701 [21]2 years ago
6 0

Answer:

The sun is where almost all energy on Earth came from.

pishuonlain [190]2 years ago
5 0

Answer:

sun

Explanation:

You might be interested in
Use the solubility curve above to answer the following: If I add 130 g of potassium iodide to 100 g of water at 10°C, how would
zhenek [66]
<span>solution of KI becomes saturated at 10 degrees when around 135-138g KI are added to 100 g of water, so it should be still unsaturated, A. unsaturated (although it is very close to saturation)</span>
7 0
3 years ago
Someone please help me dont scroll i need help
Diano4ka-milaya [45]
A line that stay s straight across the graph
8 0
2 years ago
What are the charges of families 1, 2, &amp; 13 (boron family) if/when they become Ions
Natalka [10]

Answer:

Explanation:

Group one elements are alkali metals. All alkali metal have one valance electron. They loses their one valance electron and from cation with charge of +1.

Charges on group one.

Hydrogen = +1

Lithium = +1

Sodium = +1

Potassium = +1

Rubidium = +1

Cesium = +1

Francium = +1

Group two elements are alkaline earth metals. All alkaline earth metal have two valance electron. They loses their two valance electron and from cation with charge of +2.

Charges on group two.

Beryllium = +2

Magnesium = +2

Calcium = +2

Strontium = +2

Barium= +2

Radium = +2

Group 13 elements are boron family. All elements have three valance electrons. They loses their three valance electron and from cation with charge of +3.

Charges on group 13.

Boron = +3

Aluminium = +3

Gallium = +3

Indium = +3

Thallium= +3

Group 13 elements are also shows +1 charge by losing one valance electron.

8 0
3 years ago
• We obtained the above 10.00-mL solution by diluting a stock solution using a 1.00-mL aliquot and placing it into a 25.00-mL vo
garik1379 [7]

Answer:

a) The relationship at equivalence is that 1 mole of phosphoric acid will need three moles of sodium hydroxide.

b) 0.0035 mole

c)  0.166 M

Explanation:

Phosphoric acid is tripotic because it has 3 acidic hydrogen atom surrounding it.

The equation of the reaction is expressed as:

H_3PO_4 \ + \ 3NaOH -----> Na_3 PO_4 \ + \ 3H_2O

1 mole         3 mole

The relationship at equivalence is that 1 mole of phosphoric acid will need three moles of sodium hydroxide.

b)  if 10.00 mL of a phosphoric acid solution required the addition of 17.50 mL of a 0.200 M NaOH(aq) to reach the endpoint; Then the molarity of the solution is calculated as follows

H_3PO_4 \ + \ 3NaOH -----> Na_3 PO_4 \ + \ 3H_2O

10 ml            17.50 ml

(x) M              0.200 M

Molarity = \frac{0.2*17.5}{1000}

= 0.0035 mole

c) What was the molar concentration of phosphoric acid in the original stock solution?

By stoichiometry, converting moles of NaOH to H₃PO₄; we have

= 0.0035 \ mole \ of NaOH* \frac{1 mole of H_3PO_4}{3 \ mole \ of \ NaOH}

= 0.00166 mole of H₃PO₄

Using the molarity equation to determine the molar concentration of phosphoric acid in the original stock solution; we have:

Molar Concentration =  \frac{mole \ \ of \ soulte }{ Volume \ of \ solution }

Molar Concentration = \frac{0.00166 \ mole \ of \  H_3PO_4 }{10}*1000

Molar Concentration = 0.166 M

∴  the molar concentration of phosphoric acid in the original stock solution = 0.166 M

6 0
3 years ago
What is the mass of ethanol thats exacly fills a 200.0ml container
yaroslaw [1]

Answer:

158g

Explanation:

3 0
3 years ago
Other questions:
  • Given the stretching frequencies for the C–H bonds shown in green, arrange the corresponding bonds in order of increasing streng
    8·2 answers
  • what is the energy change if an ice cube of mass 50 grams (initially at it's normal melting point) was converted to steam at the
    12·1 answer
  • have you ever been swimming and noticed some areas in the water are colder and other are warmer? why do you think this happens
    10·1 answer
  • True or False the molecule CCl4 contains one double bond and three single bonds.
    15·2 answers
  • The solubility of CO2 in water is 0.161 g/100 mL at 20oC and a partial pressure of CO2 of 760 mmHg. What partial pressure of CO2
    14·1 answer
  • When the following redox equation is balanced with smallest whole number coefficients, the coefficient for the iodide ion will b
    12·1 answer
  • How many moles of Fe2O3 can be made from 50 moles of Fe?
    5·1 answer
  • Why is Dalton's Gas Law a problem for people who visit high altitudes?
    5·1 answer
  • Finalmente responde:
    9·1 answer
  • Hat product forms at the anode during the electrolysis of molten nabr?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!