Answer:
cholesterol
Explanation:
gsdhudbdjbfmcjfjdncbdhdnhdndbchdncbdn f f ff
Which of the following is the correct Lewis structure for methane (CHA)?
O A. H-C-H
H
I-0-I
OB. H-H-C-H-H
0
H
O c. H:C:H
H
OD H-C-H
The correct lewis structure of methane(CH4)
C. H:C:H:H
Two graduated cylinders, one filled with water to 20 millimeters and one containing a rock and water filled to 32 millimeters.
Use the image to determine the volume of the rock.
Initial volume:
mL
Final volume:
mL
Volume of rock:
cm3
Answer:
1. 20
2. 32
3. 12
Explanation:
Susan said, "if I fertilize my geranium plants, they will blossom"
Choose the correct step in the scientific method
A. recognize a problem
B. from hypothesis
C. test the hypothesis with an experiment
D. draw conclusions
Answer:
This is called a hypothesis, which can be identified by the if... then... format.
So, the correct option is B. Form a hypothesis.
Let me know if this helps!
Answer:
C
Explanation:
What temperature scale is used in the ideal gas equation
Answer:
kelvin scale?
Explanation:
i`m not 100% on this one
Do plants need soil to grow
Answer:
Not all plants do need soil to grow
Explanation:
Not all plants need soil to grow. Some just do better in soil compared to other growing mediums. What plants need are minerals and nutrients, such as nitrogen, potassium, and phosphorous. Soil is an effective way of delivering those nutrients cost-effectively. You can also use alternative delivery systems like hydroponics, aeroponics, and aquaponics to achieve the desired effect. However, these are only suitable for growing shallow-rooted plants. Plants with deep roots will always need soil, as will larger plants with spreading roots.
Help!!!!!!!!!!!!!!!!!!
[tex]\\ \rm\longmapsto 9.7300\times 10^2+9.8700\times 10^3[/tex]
[tex]\\ \rm\longmapsto 9.73\times 10^4+9.87\times 10^3[/tex]
[tex]\\ \rm\longmapsto 19.6\times 10^{4+3}[/tex]
[tex]\\ \rm\longmapsto 19.6\times 10^7[/tex]
Answer:
1.0843 × 10^4
Explanation:
9.7300 × 10^2 + 9.8700 × 10^3
= 10843
1.0843 × 10^4
= 10843
7.95x10 converted to the number is
7.95 × 10
= 79.5
This is the answer
Complete and write net ionic equation:
NH3 + HCI->
Answer:
IONIC EQUATION OF NH3 AND HCL IS NH4CL
Experts believe that a good night sleep is vital to a success in school. Would kids that sleep 8 or
more hours a night get better grades than kids who sleep less than 7 hours a night?
Make a hyphotesis
Answer:
kids who sleep 8 or more hours a night
Explanation:
I hypothesize that kids who sleep 8 plus hours a night because your brain needs a good night's sleep to regenerate .
ХА
19
Which two major parts of the Earth system does this photo most clearly
show?
O A. Atmosphere
B. Biosphere
c. Cryosphere
PREVIOUS
Answer:
B. Biosphere.
Explanation:
How is polyethene formed?
A. None of these
B. The double bond on reactive ethene molecules breaks allowing them to bond with each other and form a chain.
C. Double bonds are very strong. This means when ethene is heated, hydrogens will be removed before the double bonds break. When ethene molecules lose hydrogens, their carbons bond with each other forming branching chains.
D. Polyethene is formed by the formation of double bonds between carbons in ethane molecules.
Answer:
c
Explanation:
because 2× is strong. hydrogen will be remove
what was the control group for this experiment?
Answer:
a
Explanation:
the rat felt the normal diet with vitamin are gain weight than the rat felt with diet
Mention the uses of a jack serew.
Answer:
ok dear have a nice day
carry on learing
What is an atomic mass unit? Write down the electric charge of proton neutrons and electric.
Answer:
protons has a positive charge.
Neutrons does not have a charge (neutron = neutral)
Electrons has a negative charge
Ne + C, which bonding is?
Answer:
bonding conductor
Explanation:
they have bond of conductor between them.
A Brønsted-Lowry acid Question 9 options: A) has a lower pH than vinegar. B) is any species that donates a proton. C) is any species that accepts a proton. D) is limited to aqueous solutions.
Answer:
B) is any species that donates a proton.
Answer:
A Brønsted-Lowry acid is any substance (molecule or ion) that can donate a hydrogen ion (H+).
A Brønsted-Lowry base is any species that can accept a hydrogen ion (H+).
Explanation:
In short, acids have the ability to donate protons and bases have the ability to accept protons.
Take the following reaction for example:
H2SO4+NH3⇌NH+4+HSO−4
Sulfuric acid (H2SO4) is the Brønsted-Lowry acid because it donates a hydrogen ion. Ammonia (NH3) is the Brønsted-Lowry base because it accepts the hydrogen ion.
The Brønsted-Lowry theory also introduces the concept of conjugate acid-base pairs. A conjugate acid-base pair are two species that differ by a (H+) ion.
Based on the reaction above, the ammonium ion
(NH+4) is the conjugate acid of the base ammonia and the hydrogen sulfate ion (HSO−4) is the conjugate base of sulfuric acid.
Here's a tip to let you know which substance is the conjugate acid and which substance is the conjugate base:
A conjugate base has one less (H+) proton than the acid you started with.
A conjugate acid has one more (H+) proton than the base you started with.
So option c is correct
Is any spcies that denotes a proton
Explanation:
best way to separate a solid from a liquid what separation technique is needed
Answer:
Filtiration technique
Explanation:
in a galvanic cell, if a concentration of an electrolyte is added does it affect the electron potential of that electrolyte?
Answer:
Changing the concentration of one solution in the cell will increase the voltage potential of the cell because you are putting the system further out of equilibrium. Because the concentration in only one side of the cell has changed, the concentration gradient across both sides of the cell becomes steeper. In order for this experiment to work, the salt bridge must be concentrated enough to effectively separate the two electrolyte solutions, but it must also be porous enough to allow ionic flow.
Explanation:
think so you like it
Determine the type of alcohol corresponding to each given description or name. 3-ethyl-3-pentanol Choose... An alcohol with two other carbons attached to the carbon with the hydroxyl group Choose... An alcohol with three other carbons attached to the carbon with the hydroxyl group Choose... 1-pentanol Choose... 2-hexanol Choose... An alcohol with one other carbon attached to the carbon with the hydroxyl group Choose...
Answer:
An alcohol with three other carbons attached to the carbon with the hydroxyl group
An alcohol with two other carbons attached to the carbon with the hydroxyl group
Explanation:
If we look at 3-ethyl-3-pentanol, we will discover that the compound is a tertiary alcohol. That is, the carbon atom bearing the hydroxyl group is attached to three other carbon atoms as gown in image 1 attached.
For 2-hexanol, the carbon atom bearing the hydroxyl group is attached to two other carbon atoms hence the alcohol is a secondary alcohol. The compound is shown in image 2 attached.
Write two reactions showing nascent Hydrogen is more reactive than
molecular Hydrogen.
Answer:
1.) Nascent Hydrogen has more energy than Molecular Hydrogen.
2.) Nascent Hydrogen is are more on the side of atomic and since atoms are more active than molecules, Nascent Hydrogen becomes more reactive.
to Separate camphor from sand we use_______process.
Answer:
to Separate camphor from sand we use sublimation process.Hope it is helpful to youwhat's the atomic weight of salt ?
Answer:
58.44 g/mol
Explanation:
58.44 g/mol
An man in Arkansas recently found a 9 carat diamond at Crater of Diamonds State Park. Five carats are equivalent to one gram, so this diamond weighs 1.8 g. Diamond is a crystalline form of the element carbon. How many atoms of carbon are in this 1.8 g diamond
Answer:
The answer is "1.8 g diamond includes 9.03e22 atoms".
Explanation:
Given:
Weight of 9-carat diamond = 1.8 g
[tex]\therefore\\\\[/tex]
weight of 1-mole carbon =12 g
[tex]\because[/tex]
calculating the moles which are available into 18 g carbon weight:
x= Carbon moles weight in 1.8 g
[tex]1 - mol\ C = 12 g\\\\x - mol\ C = 1.8 g\\\\\to x = \frac{(1.8 \ g \times 1\ mol\ C)}{ 12 \ g}\\\\\to x = 0.15\ moles[/tex]
In 1 mole element associated with Avogadro's number that is [tex]6.02 \times 10^{23}\\\\[/tex]
Carbon includes in 1 mol[tex]=6.02 \times 10^{23}\ atoms\\\\[/tex]
0.15 mol of carbon includes:
[tex]= 0.15 \times 6.02 \times 10^{23} = 9.03 \times 10^{22}\ atoms.[/tex]
Using the scientific notation:
0.15 mol of carbon includes: 9.03e22 atoms. So, 1.8 g diamond includes 9.03e22 atoms.
What does the prefix trans-indicate?
A. There are at least two double bonds in the molecule.
B. The carbons on either side of the double bond are pointed in
opposite directions.
C. The molecule is an alkane with no double bonds.
O D. The carbons on either side of the double bond are pointed in the
same direction
Answer:
B. The carbons on either side of the double bond are Pointed in opposite directions
why metals are not often used to
make clothes
Answer:
They would be to heavy and you would be really stiff
Explanation:
Imagine walking in a suit made of iron or tin
You would feel like the Tin Man
You would be stiff
Metals are hard and heavy
what is local unit?
.
Answer:
Explanation:
Local unit means a county, city, village, or township.
A scientist wants to know: "If salt is added to water, would the
solution still boil at the same temperature?"
torcses
Answer:
no, the sollution will boil at a higher temperature because the density of the sollution will increase when salt is added to it
Small quantities of spilled acids can be made safe with *
1 point
o gasoline.
alcohol.
water.
sodium bicarbonate solution.
Answer:
sodium bicarbonate solution
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes?
- Molecules in both the metal and the surrounding air will start moving at lower speeds.
-Molecules in both the metal and the surrounding air will start moving at higher speeds.
-The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
-The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.
Answer:
it will dilute to its natrual state. so c
Explanation:
How many grams of liquid water are produced when 60 grams of ice melt?
Answer: 60 Grams of water are produced, because you can't get more than the amount that was in the original ice cube
Explanation:
