Answer:
Well maybe the pedals they don't help much
Explanation:
Answer:
brainliest please
Explanation:
the pollen probably because other plants have it
What do scientists think is responsible for this dramatic change in height? Cite evidence from the text to support your answer.
Answer:
Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
Explanation:
i might be right
Convert a measurement of 89 cg to its equivalent in mg
Answer:
1 cg = 10 mg
Explanation:
So, 89cg = 89 * 10 = 890mg!
Pls thank, 5star, and brainliest!
If the temperature of a gas in a balloon remains constant but the pressure
is decreased, the volume of the balloon will
decrease
increase
remain the same
not enough information to predict
Answer:
increase
Explanation:
if the pressure goes down then the gas will spread out more, meaning the volume will increase
Triphosphorous hexoxide formula
Answer:
P3O6
Explanation:
Tri=3 Hex=6
Precautions to take during electroplating
Answer:
Always be scared of electroplating. ...
Follow all electrical safety precautions. ...
Use all safety Precautions. ...
Use that Fume Hood. ...
It's a chemistry lab, set it up like one. ...
Always add acid to water. ...
Don't overheat your solutions! ...
Don't mix acid and cyanide solutions.
Will these groups of elements form ionic or molecular compounds? sodium and Iodine 
Answer:
Ionic
Explanation:
Answer:
carbon and hydrogen are molecular
Explanation:
What is the total amount of heat energy, in
joules, absorbed by 25.0 grams of water when the
temperature of the water increases from 24.0°C to
36.0°C?
Answer:
0.84
Explanation:
total heat energy =mass ×specific heat capacity (4.2kJ)×temp change
mass=25g convert to kg to get 0.025
specific heat capacity is 4.2
temp change=36.0-24.0=8.0
q = mC∆T
m=25.0
c=24.0
ΔT=36.0
25.0 * 24.0 * 36.0 = 21,600 jules
The equation q = MC ∆ T, where m is the sample mass, c is the specific heat, and ΔT is the temperature change, can be used to determine the amount of heat acquired or lost by a sample (q).
How can you figure out how much energy was consumed?
This is simple to perform; to calculate the amount of heat absorbed, multiply the substance's heat capacity by its mass and the temperature change.
The specific heat capacity of a substance is the amount of energy needed to raise the temperature of 1 gram of that substance by 1 degree Celsius. With a value of 4.18 J/g/°C, water has one of the highest heat capacities.
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which cycle results in death of the host cell
A.lytic cycle
B.lysogenic cycle
C.both
Answer:
A. lytic cycle is the correct answer
Which of the following are held together by nonpolar covalent bonds? PLEASE HELP
Answer:
The atoms of chlorine are held together by non-polar covalent bonds. Covalent bonds are formed between two or more atoms having zero or very small electronegativity difference. For homonuclear molecules where the two bonding atom are of the same kind, the electronegativity difference is zero.
C. Atoms of chlorine (CI)
A covalent bond is created when the electrons from the two involved atoms are shared equally.The pair of electrons involved in this kind of bonding is referred to as the shared pair or bonding pair. Here the atoms of chlorine have non-polar covalent bonds. The correct option is C.
What are non-polar covalent bonds?A non-polar covalent connection is created when atoms with an equal amount of electrons share one another. The electronegativity of the two atoms is equivalent. When two atoms with similar electron affinities join together, like in the case of diatomic elements, it happens.
Non-polar covalent compounds are those in which there is no variation in electronegativity. In these compounds, the electronegativity does not change, preventing the motion of the bond pair's electrons in the direction of the linked atoms.
As a result, a molecule is non-polar and non-conducting since there is no bond or dipole moment between its atoms and no buildup of charges on the atoms.
Thus the correct option is C.
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Which of the following statements does not describe a physical property of chlorine?
O The color of chlorine gas is green.
O The density of chlorine gas at standard temperature and pressure is 3.17 g/L. OChlorine combines with sodium to form table salt.
O The freezing point of chlorine is -101°C.
Answer:
the chlorine gas is green
Explanation:
the density of
Therefore, the first option A is correct.
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Help please!!! How many grams are in 3.46 moles of Sulfur?
Answer:
The answer is: 78.04454 grams
Explanation:
Answer:
IHi the answer is 32.065 grams
bro needs help
32.5 grams of NaOH reacts with an excess of CO2
2NaOH(s) + CO2(g) ⇒ Na2CO3(s) + H20
What is the theoretical yield of Na2CO3 in grams?
*** I NEED YOU TO SHOW YOUR WORK BROS, I ALREADY HAVE THE ANSWER (43.1g) ***
ASAP PLEASEEEE
Draw a graph of how kinetic energy & temperature are related
(LOOK AT THE PICTURE ATTACHED)
Answer:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
Explanation:
Answer:
jayfeather the answerer friend me
Explanation:
As stated in the kinetic-molecular theory, the temperature of a substance is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles.
How many moles of Na2SO4 are present in 426.12 grams of Na2SO4? (5 points)
Group of answer choices
2
3
5
6
Answer: It’s 2.9 moles
Explanation:
Answer:
b) 3
Explanation:
i got it right
Why did early people most likely choose to settle in Mesopotamia?
Answer:
People wanted to settle there because it had good living conditions. There was rich soil, and lots of water sources.
I hope this helps!
Please help me ASAP
why is digital better then analog music
Once a digital recording is made, the bandwidth is set in place. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.
How are a carrot, an amoeba, and a bacterium alike?
They are prokaryotes.
They are eukaryotes.
They are all made of cells.
They all live in soil.
Answer:
They are all made of cells
Answer: They are all made of cells.
Explanation:
You have been given a choice of four elements; Lithium, Magnesium, Sulfur, and Bromine. You must decide which two elements would form a compound that has one atom of the metallic atom and two of the non-metallic atom in the final neutral compound. Which choice lists the two atoms with the correct formula for the compound?
A.
Magnesium and Sulfur; MgS2
B.
Lithium and Bromine; LiBr2
C.
Lithium and Sulfur; Li2S
D.
Magnesium and Bromine; MgBr2
The compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
The periodic table has been the arrangement of the elements with increasing atomic number and similarity in the reactivity.
The metals in the periodic table are elements that has been able to accept electrons, and nonmetals are the elements in the table that loses electrons to attain the stable noble gas configuration.
Formation of a neutral compoundThe metal and nonmetal form the neutral compound when there has been the formation of stable compound with the complete configuration.
The magnesium and lithium has been metals, while sulfur and bromine are nonmetals. Bromine has been the element of group 17. It has been able to gain an electron. Sulfur has been the nonmetal and required 2 electrons to complete its octet.
Lithium has been the metal with one valence electron, and magnesium with 2 valence electrons.
The neutral compound to be formed has been consisted of one metal with 2 valence electrons, and 2 nonmetals with 1 valence electrons.
Thus, the compound formed that has been neutral has been Magnesium and bromine. Thus, option D is correct.
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Tectonic Plates
Tectonic Plates
Which of the following is an accurate description of the movement of the tectonic plates in the diagram?
O A. Plate A is sliding past plate B.
O B. Plate A and plate B are diverging.
OC. Plate A and plate B are of equal density and are colliding.
OD. Plate A is denser than plate B, which results in subduction.
How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?
1. They used X-ray analysis.
2. They used litmus testing.
3. They burned the paint to examine what elements were left after the chromium was burned off.
4. They studied the density of modern yellow paint to that of 100-year-old paint.
Answer:
I think the answer is A - they used X-ray analysis.
Explanation:
Answer:They used X-ray analysis
Explanation:
It’s in the text
If 23.17 g of beryllium (Be) reacts with water at standard temperature and pressure,
how many liters of hydrogen (H2) are produced?
Volume of H2 produced = 57.6576 L
Further explanationGiven
23.17 g Be
Required
Volume of H2
Solution
Reaction
Be(s)+H2O(g)→BeO(s)+H2(g)
mol Be :
= 23.17 g : 9 g/mol
= 2.574
From the equation, mol H2 : mol Be = 1 : 1, so mol H2 = 2.574
Volume H2(assumed at STP, 1 mol=22.4 L) :
= 2.574 x 22.4 L
= 57.6576 L
(NH4)2SO4. How many N are there?
The answers plzzzzzzz
Answer:
ok, whats the question
Explanation:
4. How many moles of H, would be
produced from 47 grams of H2SO4?
2A1 +3H,504 → Al2(SO4)3 +3H2
Answer:
0.48 moles of H₂ are produced.
Explanation:
Given data:
Number of moles of H₂ produced = ?
Mass of H₂SO₄ = 47 g
Solution:
Chemical equation:
2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂
Number of moles of H₂SO₄ :
Number of moles = mass/molar mass
Number of moles = 47 g/ 98 g/mol
Number of moles = 0.48 mol
Now we will compare the moles of H₂SO₄ and H₂
H₂SO₄ : H₂
3 : 3
0.48 : 0.48
Thus, 0.48 moles of H₂ are produced.
Questions and answer options are on ( Picture )
remember pick 2 answers it says
help :(
ZOOM IN if needed
Answer:
The answer is A
Explanation:
I dont see any claim
is mass conserved in 2Na+2H2O=2NaOH+H2
Answer:
yes mass conservation is in 2Na+2H2O=2NaOH+H2
Explanation:
it tells how many atoms or molecules of a reactant or a product take part in the reaction
What unit is used to measure weight?
Answer:
The unit is: Newton.
Hope it helps:D
Scott and his classmates were looking at an animal cell under a microscope. They are trying to locate the cell's DNA, which is found in its chromosomes. Where should Scott look to find the chromosomes?
In the mitochondria
In the cell nucleus
In the cytoplasm
In the cell vacuole
im hella confused and need some help