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
rewona [7]
2 years ago
14

Matter makes up

Chemistry
1 answer:
Marta_Voda [28]2 years ago
4 0

Answer:

D.

Explanation:

You might be interested in
The compound adrenaline contains 56.79% c, 6.56% h, 28.37% o, and 8.28% n by mass. what is the empirical formula for adrenaline?
Phoenix [80]
To determine the empirical formula of the compound given, we need to determine the ratio of each element in the compound. To do that we assume to have 100 grams sample of the compound with the given composition. Then, we calculate for the number of moles of each element. We do as follows:<span>
         mass        moles
C       56.79        4.73
H       6.56          6.50
O       28.37        1.77
N      8.28           0.59

Dividing the number of moles of each element with the smallest value, we will have the empirical formula:

</span>         moles                 ratio
C       4.73     / 0.59       8
H       6.50     / 0.59      11
O       1.77     / 0.59       3
N        0.59    / 0.59       1<span>
</span><span>
The empirical formula would be C8H11O3N.</span>
8 0
2 years ago
A sentence for desert
Tanya [424]
He knew he was in the desert when he saw the dust blowing and a cactus. /// He was trying to desert the field in which was dangerous.
5 0
2 years ago
Read 2 more answers
A gas has a pressure of 326 mm Hg at 20 degrees Celsius. What is the temperature at 52.4 k Pa?
jonny [76]

Answer:

it's is math that you can answer with your sister and your mother

3 0
2 years ago
Read 2 more answers
In a reaction, gaseous reactants form a liquid product. The heat absorbed by the surroundings is 1.1 MJ, and the work done on th
ratelena [41]

Answer: \Delta E is 1155 kJ

Explanation:

According to first law of thermodynamics:

\Delta E=q+w

\Delta E=Change in internal energy

q = heat absorbed or released

w = work done or by the system

w = work done by the system=-P\Delta V  {Work done on the system is positive as the final volume is lesser than initial volume}

w =13.2kcal=55.2kJ   (1kcal=4.184 kJ)

q = +1.1 MJ = 1100 kJ  (1MJ=1000kJ)   {Heat absorbed by the system is positive}

\Delta E=1100kJ+(55.2)kJ=1155kJ

Thus \Delta E is 1155 kJ

4 0
3 years ago
What determines how the atoms are organized on the periodic table of elements?
tresset_1 [31]
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
4 0
2 years ago
Other questions:
  • Which element above has 8 protons in its nucleus?
    13·2 answers
  • How many atoms of a chlorine element would be needed to react with one atomic of helium
    13·1 answer
  • Dissolving a spoonful of sugar in tea or coffee is an example of
    12·1 answer
  • If an experiment produces 5 g but should have made 500 g, what is the percent<br> yield?
    7·1 answer
  • How many grams of oxygen, O 2 , is consumed when 41.9 g of propane, C 3 H 8 , burns?
    8·1 answer
  • If they travel 75 meters in 10 seconds, how many meters must they travel each second?
    7·1 answer
  • Bob measured out 1.60 grams of sodium. He calculates that 1.60 g of
    10·1 answer
  • Which of the following aqueous solutions will have the greatest concentration of H+?
    11·1 answer
  • Which of the following represents a neutralization reaction which hydrofluoric acid and sodium hydroxide(a base) react to produc
    7·1 answer
  • The number 0.0020 expressed in scientific notation is?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!