Answer:
Respiration
Explanation:
Respiration is the system of how an animal breathes
The Himalayan balsam plant makes seeds in pods and releases them when it is ready, while the Surinam toad absorbs its eggs into its own back until they are ready to come out. How are the adaptations of the balsam and the toad similar?
A: They are behaviors that allow the plant and the animal to reproduce through shorter life cycles.
B: They are behaviors that protect the plant and the animal from predators.
C: They are life cycle differences that protect the offspring and help them to survive.
D: They are physical characteristics that allow the offspring to survive in cold weather conditions.
Answer:a
Explanation:
Answer:
A
Explanation:
True or False: A heterozygous genotype produces the dominant phenotype because the dominant allele masks the recessive allele.
Is it true or false guys??
At a football stadium, 5% of the fans in attendance were teenagers. If there were 160 teenagers at the football stadium, what was the total number of people at the stadium?
Answer:
yes
Explanation:
bc god exist
Answer:
3200
Explanation:
You have a gas that has a pressure of 2 ATM and a volume of 10 L. What would be the new volume if the pressure was changed to 1 ATM ?
Answer:
20 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{2 \times 10}{1} = 20 \\ [/tex]
We have the final answer as
20 LHope this helps you
What is the molar mass of Ca(NO3)2?
a 102.2 g/mol
b 134.1 g/mol
c O 164.1 g/mol
d 0 204.2 g/mol
Answer:
C.164.1g/mol
Explanation:
40+14×2+16×6
164
The molar mass of Ca(NO3)2 is 164.1 g/mol.
What is Calcium nitrate?
Calcium nitrate, also called Norgessalpeter (Norwegian salpeter), is an inorganic compound with the formula Ca(NO3)2(H2O)x. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts. Calcium nitrate is mainly used as a component in fertilizers, but it has other applications. Nitrocalcite is the name for a mineral which is a hydrated calcium nitrate that forms as an efflorescence where manure contacts concrete or limestone in a dry environment as in stables or caverns. A variety of related salts are known including calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate.
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Ultraviolet light from the Sun can
Answer:
Can cause sunburn, premature aging of the skin and damage molecules in skin cells
Explanation:
Answer:
pueden afectar directo al adn de las celulas de la piel y son causantes de las quemaduras del sol
Explanation:
Q. Explain why magnesium
oxide has a much higher
melting point than
sodium chloride.
If you answer this correctly ill mark you as brainliest.
Answer:
Why does Magnesium Oxide have a higher melting point than Sodium Chloride? ... As the charge in the ionic lattice in Magnesium Oxide is two times as large, the ionic bonding is stronger so more energy is required to overcome the electrostatic attraction and break down the ionic lattice.
HI thts way tooo much to answer but ye.
GIVING BRAINLIEST
What do the arrows at point 3 indicate?
O Cool air is above water.
O Warm air is above land.
O Warm air is cooling quickly.
O Cool air is warming quickly.
Answer:
D) Cool air is warming quickly.
Explanation:
d is the answer.
The arrows at point 3 indicates that Warm air is cooling quickly and the correct option is option C.
What is Sea Breeze?Sea breeze is a blowing breeze from sea towards land during the day is called sea breeze.
During the day, the land surface heats up faster than the water surface.
Therefore, the air above the land is warmer than the air above the ocean.
As a result, warm air rises. Therefore, the warmer air over the land surface is rising.
As the warm air over the land is rising, the cooler air over the ocean is flowing over the land surface to replace the rising warm air
Therefore, The arrows at point 3 indicates that Warm air is cooling quickly and the correct option is option C.
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What volume, in liters, does the following quantity of gas at STP occupy?
7.8*10^15
thank you
Answer:
2.9x10⁻⁷L is the volume this amount of gas occupy
Explanation:
Assuming there are 7.8x10¹⁵ atoms
Based on the general gas law:
PV = nRT
Where P is pressure = 1atm
V is volume = Our incognite
n are moles of the gas:
7.8x10¹⁵ atoms * (1mol / 6.022x10²³ atoms) = 1.30x10⁻⁸ moles of gas
R is gas constant = 0.082atmL/molK
And T is absolute temperature = 273.15K at STP
Solving for Volume:
V = nRT/P
V = 1.30x10⁻⁸ moles*0.082atmL/molK*273.15K / 1atm
V = 2.9x10⁻⁷L is the volume this amount of gas occupy
Which of the following is not a compound?
Cl
CO2
NaCl
HCl
Outdoor decay of objects is a chemical reaction. Some ancient objects have been preserved extremely well in Arctic conditions. As glaciers have melted, archaeologists have discovered 4,000-year-old Viking clothing. Clarissa left her wool sweater outside at her family's summer cottage in Florida. When she returned the following summer, the sweater was in shreds, decayed by reactions that break down wool. Based on the data in the table, what can you conclude about the rate at which clothing decays in cold temperatures compared with the rate at which clothing decays in warm temperatures?
A. More information is needed to compare rates of decay
B. Reactions occur at the same speed in all temperatures
C. Reactions occur more quickly in the cold
D. Reactions occur more slowly in the cold.
Answer: D. Reactions occur more slowly in the cold.
Explanation:
Which type of ion usually undergoes reduction?
No ion
All ions
Anion
Cation
Answer:
anion
Explanation:
anion undergoes reduction.
cation undergoes oxidation.
The ions are categorized according to the process of oxidation and reduction. The ion usually undergoes reduction is an anion.
What is reduction?A process involving the partial or complete gain of electrons and loss of oxygen. The ions acquire a net negative charge on them.
Thus, anions usually undergo a reduction.
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HELP PLS THANK YA!!!
Is Cu(OH)2 a covalent bond , an ionic bond or both?
The bond between the Cu²⁺ and OH⁻ ions is, well, ionic. However, the bond between the O and the H in the OH⁻ ion is covalent. So Cu(OH)₂ is, as a whole, an ionic compound, but it contains or comprises both ionic and covalent bonds.
How many joules of heat are required to raise the temperature of 320.0 grams of water from 24.2°C to 50.8°C? Heat capacity of water is 4.2 J/g°C.
Answer:
35750.4 Joules
Explanation:
Using the formula as follows;
Q = m × c × ∆T
Where;
Q = amount of heat (joules)
m = mass of substance (g)
c = specific heat capacity (J/g°C)
∆T = change in temperature (°C)
According to the provided information,
mass (m) = 320.0 grams
c = 4.2 J/g°C
∆T = (50.8°C - 24.2°C) = 26.6°C
Q = ?
Using; Q = m × c × ∆T
Q = 320 × 4.2 × 26.6
Q = 35750.4 J
Fusion:
Requires high temperatures
Occurs in the sun and other stars
Creates less radioactive waste than fission
All of the above
PLEASE HELP NO LINKS OR FILES
You have to use the words that are in red to describe the wave.
Answer:
Rise surface fall surface rise
Explanation:
Hope this helps!
The natural pH of rain water is
acidic
neutral
basic
Please help
Answer:
between 5.0 and 5.5
Explanation:
acidic
C + 2ZnO → CO2 + 2zn
How many grams of
carbon dioxide will be
produced if 135 grams
of ZnO is completely
reacted?
Answer:
36.5 g CO2
Explanation:
First, Write a Balanced Equation
C + 2 ZnO → CO2 + 2 Zn
Useful Information,
MW of ZnO = 81.41 g
MW of CO2 = 44.01 g
135 g ZnO x (1 mol ZnO / 81.41 g ZnO) x (1 mol CO2/2 mol ZnO) x ( 44.01 g CO2 / 1 mol CO2 ) = 36.5 g CO2
TRUE OR FALSE? what is similar about the structure of all atoms is that they all have a nucleus made up of one or more protons and neutrons. Than electrons are located outside each nucleus
Answer:
the answer is true
Explanation:
How many liters of carbon dioxide will be produced at STP if 3.56 g calcium carbonate reacts completely with carbon dioxide? CaCO3 --> CaO + CO2
Answer:
V = 0.798 L
Explanation:
Hello there!
In this case, for this gas stoichiometry problem, we first need to compute the moles of carbon dioxide via stoichiometry and the molar mass of starting calcium carbonate:
[tex]3.56gCaCO_3*\frac{1molCaCO_3}{100gCaCO_3} *\frac{1molCO_2}{1molCaCO_3} =0.0356molCO_2[/tex]
Next, we use the ideal gas equation for computing the volume, by bearing to mind that the STP conditions stand for a pressure of 1 atm and a temperature of 273.15 K:
[tex]PV=nRT\\\\V=\frac{nRT}{P}\\\\V=\frac{0.0356mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm} \\\\V=0.798L[/tex]
Best regards!
1. A wave travels at a velocity of 13 m/s and has a
wavelength of 7m. What is the frequency of the
wavelength?
b it is Explanation:
Captain uses a steering wheel called him to turn the rudder A sailing ship do you think it would be easier for him to turn a large wheel or a small wheel explain why you think so
Answer:
Large wheel.
Explanation:
It would be easier for the captain to turn a large wheel as compared to a small wheel because less amount of effort is needed by the captain to turn the rudder. If a steering wheel is small, more effort and force is required to turn it while on the other hand, if the steering wheel is large, small effort is needed to turn the rudder. The large size of a sailing boat's steering wheel can help the captain to have more control over the boat as compared to small steering wheel and he is able to access it from either side of the boat.
2. Which of the following is/are TRUE regarding net ionic equations?
A. Net ionic equations show only the particles directly involved in the
chemical change.
B. Spectator ions are included in complete equations, but not in net ionic
equations.
C. lonic charges do not need to be balanced in a net ionic equation.
D. Combustion, combination, and decomposition reactions can be written as
net ionic equations.
A and B are true.
C and D are false.
Out of the given four statements, A and B are only correct.
Explanation:
In the complete equation of a chemical reaction, the complete symbols of reactants and products are written along with states of matter under conditions at which the reaction is taking place.In the net ionic equation of a chemical reaction, only those chemical species are written which directly participating in the chemical reaction.The mass and charge in the net ion equation must be balancedIt is used in neutralization reactions, redox reactions, double displacement reactions.So from this, we can conclude that out of the given four statements, A and B are only correct.
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Determine what product will be produced at the negative
electrode for the following reaction:
2CuSO4 (aq) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g)
A. CuSO4
B. Cu
C. H2SO4
D. H2
Cu will be produced at the negative electrode for the following reaction:
2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,therefore option (b) is correct.
What do you mean by the term electrolysis ?
Electrolysis is defined as a process of decomposing ionic compounds into their elements by passing a direct electric current through the compound in a molten form.
Characteristics of negative electrode -:
The negative electrode in an electrolytic cell, is the one toward which positively charged particles are attracted.
The cathode has a negative charge because it is connected to the negatively charged .
When an electrolyte is dissolved in water and an electric current is passed through it, the Cations move towards the cathode and Anions move towards anode .
Cu will be produced at the negative electrode for the following reaction:
2CuSO4 (a q) + 2H20 (1) -> 2Cu(s) + 2H2SO4(l) + O2(g) ,hence option (b) is correct.
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The H2 product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.
What is electrodes?The electrode is an electrical conductor or source of electricity that carries electric current or circuit to the non-metallic circuit parts of a circuit, some examples are electrolyte and semiconductor.
The following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O2(g) is a redox reaction in which the negative end is producing the H2 gas and copper gets solidify at the positive end.
Therefore, H₂ product will be produced at the negative electrode for the following reaction 2CuSO₄ (aq) + 2H₂0 (1) -> 2Cu(s) + 2H₂SO₄(l) + O₂(g). option D is correct.
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Black coffee has a pH of around 5. Since pH and pOH have an inverse relationship, black coffee has a pOH of ___.
Answer:
pOH = 9.
Explanation:
The inverse relationship between the pH and pOH of any given solution can be written as:
pH = 14 - pOH
Or conversely:
pOH = 14 - pH
With the above information in mind we can use the given pH to calculate the pOH:
pOH = 14 - pH
pOH = 14 - 5
pOH = 9
Thus, black coffee has a pOH of 9.
Can someone help me pls?
Zr + O ⇒
B + O ⇒
Zn + C ⇒
Co + I ⇒
Mg + Br ⇒
Explanation:
tttttttttttttttttttttttt
72.2% of element X is mass number 85. 27.8% is mass number
87. What is the average atomic mass of element X? (Round to
the correct number of significant figures.)
Answer:
11
Explanation:
A swimmer pushes against a wall with his feet, as shown below.
The wall pushes back against the swimmer's feet with the same force. Which of Newton's laws does this best demonstrate?
A.
Newton's law of universal gravitation
B.
Newton's second law of motion
C.
Newton's third law of motion
D.
Newton's first law of motion
Answer:
C. newton's third law of motion
Explanation:
as newton's third law of motion states that every action has a reaction that is equal in size, opposite in direction, and acts simultaneously.
Can you identify what object is being represented by the model on the right?
basketball
cell
Earth
The answer is. B. Cell
Answer:
Cell lol
Explanation:
answer B
C2H2 +
02 -->
CO2 +
H20
Answer:
Explanation: This reaction is called a synthesis reaction. This is because a synthesis reaction is when two or more reactants combine/react together to form a single product. The two reactants carbon (C) and oxygen (O2) reacted together to form one single product: carbon dioxide (CO2)