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
4vir4ik [10]
3 years ago
11

What is true of every water molecule?It is made of two water atoms.It is made of one water atom and one DNA atom.It is made of t

wo hydrogen atoms and one oxygen atom.It is made of one hydrogen atom and two oxygen atoms.
Chemistry
1 answer:
AnnZ [28]3 years ago
8 0
(H2O) which means 2 hydrogen atoms and 1 oxygen 
You might be interested in
What structures allow small particles to cross the cell membrane
RideAnS [48]
Ion channels allow things to cross the membrane
5 0
3 years ago
Aldol condensation of 2,5-heptanedione yields a mixture of two enone products in a 9:1 ratio. Treatment of the minor product wit
sattari [20]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The diagram of the mechanism of this reaction is shown on the second uploaded image

The structure of the enolate Ion 1 is shown on the third uploaded image

Explanation:

6 0
3 years ago
Using the example in the above information determine the empirical formula of a compound if a sample contains 0.130 g of nitroge
olga2289 [7]

Answer: The empirical formula for the given compound is NO_2

Explanation : Given,

Mass of O = 0.370 g

Mass of N = 0.130 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{0.370g}{16g/mole}=0.0231moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{0.130g}{14g/mole}=0.00928moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00928 moles.

For Oxygen  = \frac{0.0231}{0.00928}=2.4\approx 2

For Nitrogen = \frac{0.00928}{0.00928}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of O : N = 2 : 1

Hence, the empirical formula for the given compound is NO_2

4 0
3 years ago
Qué volumen ocupan 5 moles de un gas que se encuentran a 28°C y 3 atm de presión?
lys-0071 [83]

<em>What volume do 5 moles of a gas occupy at 28 ° C and 3 atm of pressure?</em>

<em />

<h3>Further explanation</h3>

In general, the gas equation can be written  

\large {\boxed {\bold {PV = nRT}}}

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

n= 5 moles

T=28 +273=301 K

P=3 atm

The volume of the gas :

\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{5\times 0.082\times 301}{3}\\\\V=\boxed{\bold{41.136~L}}

5 0
3 years ago
Summarize the process of alcoholic fermentation in yeast
AysviL [449]

Alcoholic fermentation is mainly used by various yeast species to make energy.

If there is no oxygen available, the yeasts have in the alcoholic fermentation another possibility of energy supply. But they can - as compared with cellular respiration - recover substantially less energy from glucose, in the form of adenosine triphosphate (ATP): by complete oxidation, a molecule of glucose provides 36 molecules of ATP, but by alcoholic fermentation only 2 molecules of ATP. These two molecules are obtained in glycolysis, the first step in the chain of reactions for both cellular respiration and fermentation.

The two additional steps of the fermentation, and thus the production of ethanol serve not to make energy, but the regeneration of the NAD + cofactor used by the enzymes of glycolysis. As NAD + is available in limited quantities, it is converted by the NADH reduced state fermentation enzymes to the NAD + oxidized state by reduction of acetaldehyde to ethanol.

6 0
3 years ago
Other questions:
  • Calculate the pH of a solution prepared by dissolving 0.15 mol benzoic acid (C7H5O2H) and 0.30 mol of sodium benzoate (Na C7H5O2
    13·1 answer
  • ___in Earth’s___ is the up and down movements of plastic-like material within that layer.
    14·1 answer
  • The temperature of a system rises by 45°C during a heating process. Express this rise in temperature in Kelvin. (Round the final
    15·1 answer
  • Complete and balance the following equation: NO2−(aq)+Cr2O72−(aq)→Cr3+(aq)+NO3−(aq)(acidic solution) Express your answer as a ne
    7·1 answer
  • Why is it important to use fine adjustment when focusing with the high power on a microscope?
    14·1 answer
  • Does “valence electrons” have a charge?
    13·1 answer
  • There are ____ main groups in the modern periodic table of elements
    9·1 answer
  • Which of the following covalent bonds is the strongest?
    8·1 answer
  • Some one please Help and Thank you <br>​
    6·1 answer
  • (will give brainliest!! please help me! thank you!)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!