Answer:
a
Explanation:
What is the relationship between the latitude and hours of daylight
Answer:
The tilt of the Earth's axis also defines the length of daylight.Daylight hours are shortest in each hemisphere winter. Between summer and winter
solistice the number of daylight hours decreases and the rate of decrease is larger the higher the latitude.The fewer sunlight hours the colder nights.
What kinds of paintings did Winslow Homer make
how many joules are needed to heat 20.0 g of Au from 10 C to 50 C
Answer:
Its actually Q = 103.2 J
Explanation:
1. A cube of wood having an edge length of 15.3 cm has a mass of 2800 grams. What is the
density of the wood in g/cm3?
Answer:
a cube wood is mass ig haha sorry bby :(
Explanation:
You have a solution of water and pure ethanol. The boiling point of water is 100 degrees Celsius and the boiling point of pure ethanol is 78 degrees Celsius. A. What process would you would use to separate this solution? Describe, in detail, how this process works.
Answer:
Distillation
Explanation:
A solution of water and ethanol are miscible. Hence, they can only be separated by a process known as distillation. Distillation is the process in which two or more constituents in a mixture are separated based on there difference in boiling points. The mixture is subjected to high heat and the one with the least boiling point distills/evaporates out first followed by the next least boiling point.
From the explanation above, it can be deduced that ethanol (with boiling point of 78°) will be distilled out while water remains in the boiling tube or container.
list 3 examples of pairs of atoms with ionic bonds
Answer:
Na(0.93) & F(3.98)
K(0.82) & Cl(3.16)
Cs(0.79) & Br(2.96)
Explanation:
Mark is in charge of making change at his family's garage sale on a hot summer day. He runs low on change and brings out a jar of pennies from the house. He keeps the lid off of the jar. Later in the day, he notices that the pennies are hot. Which statement best explains what happened?\
Answer:
This question is incomplete
Explanation:
The question is incomplete without the options. However, when a metal (in this case what the pennies are made of) is left in direct contact with the heat from the sun, it conducts this heat and becomes hot. This process is called thermal conduction. The thermal energy is readily accepted by the material in which the pennies are made of thereby increasing the thermal energy of the penny coin which then makes the pennies hot after being left under the sun.
ANSWER ASAP PLEASE!!
What determines how many of each ion is required for an ionic compounds?
please do not look up on google!!!!
Each ion has a single charge, one positive and one negative, so we need only one ion of each to balance the overall charge. When writing the ionic formula, we follow two additional conventions: (1) write the formula for the cation first and the formula for the anion next, but (2) do not write the charges on the ions.
The first chemists, philosophers like, Aristotle were from which country?
Answer:
greece
Explanation:
aristole was particularly from stagria, greece. but most early philosophers are from greece
500 gram of flour added with 1L of water anong lalagyan o bottle magkakasya ang 500gram of flour ang 1L of water
Answer:
it will become a bread
Explanation:
net Mass will become 1.5 liter
Describe the specific steps a scientist would take to solve a particular problem
Answer:
scientific method
Explanation:
- make an observation
- ask a question
- form a hypothesis
- make a prediction based on the hypothesis
- test the prediction
- iterate: use the results to make new hypotheses or predictions
Having a widow's peak like Wentworth
Miller is dominant.
Not having a widow's peak, like Rihanna, is
recessive.
10) If Wentworth Miller is Aa, and he and Rihanna had children, what are the possible
phenotypes and genotypes of their children?
Answer:
Aa 50% Widow's peak, aa 50% no Widow's peak
Explanation:
In the crossing over the phenotypes of their children, 50% are widow's peak (aa), while 50% are not widow's peak (Aa) because the widow's peak genes only show trait when it is in recessive condition.
What is a recessive condition?An inheritance pattern known as autosomal recessive inheritance allows a genetic disease or characteristic to be transferred from parent to offspring.
When a kid receives one altered (mutated) gene from each parent, a genetic disease may result. An autosomal recessive disorder is typically not present in the parents of a kid who has it.
Describes a property that can only be observed when a genotype is homozygous, a feature that is often concealed by other inherited qualities but survives in a population of heterozygous genotypes.
The crossing between Aa X Aa
Gametes: A and a.
The cross is attached in the image below.
Therefore, the gene's dominant allele, which is expressed when its alleles are distinct, is the case when the alleles are different. The recessive allele effect is hidden by the other allele's effect.
Learn more about recessive, here:
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challenges we will face terraforming Mars
Earth's revolution takes 365.25 days. What is a revolution?
Answer:
"Revolution" refers the object's orbital motion around another object.
plz mark brainliest :DD
Please help
The charge of o monatomic ion is its oxidation number.
O True
O False
O Neither
How would you arrange the objects below from greatest to least volume?
A balloon
A water bottle
A bottle of soda
A rock
Answer:
A balloon
A bottle of soda
A rock
A water bottle
Explanation:
what does CER mean for science?
Explanation:
Claim, Evidence, Reasoning (CER) model, an explanation consists of: A claim that answers the question. Evidence from students' data. Reasoning that involves a rule or scientific principle that describes why the evidence supports the claim.
Considering the principles of KMT, which scenario would result in an increase of particles effective collisions at STP None of the above None of the above In a balloon In a balloon A container with large volume A container with large volume A container with small volume
Answer:
A container with small volume
Explanation:
The question is obviously incomplete because the image attachments are missing.
However, it is necessary to note that, the effective collisions depends on the volume of the gas.
The lesser the gas volume, the greater the effective collision between particles at STP.
Hence from the KMT, the scenario having the least volume of gas will have the greatest magnitude of effective collisions.
The heat required to raise the temperature of 12g of water from 16 C to 21 C is:
a) 60 J
b) 60 cal
c) 50 cal
d) 50 J
Answer:
The correct option is;
b) 60 cal
Explanation:
The mass of the given water, m = 12 g
The initial temperature of he given water = 16°C
The final temperature of the given water = 21°C
The specific heat capacity of water, c = 4.184 J/(g·°C) = 1 cal/(g·°C)
The amount of heat, ΔQ, required = Mass × Specific heat capacity × Change in temperature
ΔQ = 12 × 4.184 × (21 - 16) = 251.04 J
Similarly, we have;
ΔQ = 12 g × 1 cal/(g·°C) × (21 - 16)°C = 60 cal
The amount of heat required = 60 cal.
What is force and motion
Answer:
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes beginning moving from a state of rest), i.e., to accelerate. Force can also be described intuitively as a push or a pull.
lol
Identify the chemical formula of ammonia.
Answer:
The chemical formula for ammonia is NH3
Explanation:
Nitrogen trihydride
What factors are included on a phase diagram?
O A. Temperature and pressure
O B. Pressure and volume
O C. Mass and volume
O D. Heat and kinetic energy
Answer:
A. Temperature and pressure
Explanation:
The factors included in a phase diagram are the temperature and pressure conditions.
A phase diagram is a combined plot of three curves all in equilibrium;
Solid- liquid, liquid -gas, and solid -gas plots
On the vertical axis, we usually have the pressureOn the horizontal axis is where the temperature is represented. Most phase diagrams are used in chemistry and mineralogy to show areas in which different phases can exist at equilibrium.The factors included on a phase diagram are temperature and pressure and the correct option is option A.
A phase diagram is a graphical representation that shows the different phases of a substance (solid, liquid, and gas) as a function of temperature and pressure. It provides valuable information about the conditions at which different phases can exist and the boundaries between them.
The temperature is typically plotted on the horizontal axis, while the pressure is plotted on the vertical axis.
By examining a phase diagram, one can determine the melting point, boiling point, and critical point of a substance, as well as the regions of stability for each phase. Additionally, phase diagrams can reveal the existence of phase transitions such as melting, boiling, and sublimation.
Thus, the ideal selection is option A.
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What is meant by a solute-give an exmple.
What is meant by a solvent - give an exemple
what is meant by a solution -give an exmple
what do the following symbole mean s,l,g and aq
what is the difference between filtration and crystallisation
Answer:
A solute is a substance that dissolves in a solvent to for a solution.Example; Sugar.
A solvent is a substance that dissolves a solute to form a solution.Example ;water.
A solution is a uniform mixture of a solute and a solvent.
aq means aqueous
In fiteration the residues are called filtrates but in crystalization the residues are called crystals .
if faucet drips 5 mL of water each minute, what is the volume of water dripped at the end of five minutes?
5 mL
25 mL
5 m³
25 m³
I apologize for being dumb XD
Where is the youngest rock in the Atlantic Ocean found?
Answer:
oceanic ridge
The youngest rocks on the ocean floor are located at the oceanic ridge, an underwater mountain range formed from the spreading of tectonic plates in.
Explanation:
1234567891011121314151617181920
Deciding that she was thirsty, Ms. Smith decided to mix up some lemonade using 2 tablespoons of lemonade, and 2 cups of water. What is the solute and solvent?
Explanation:
solute is the substance being dissolved so that is the 2 tablespoons of lemonade and the 2 cups of water is the solvent.
A physical change is easier / more difficult to reverse than a chemical change.
Answer:
the answer is that a physical change is easier to reverse then a chemical change.
Explanation: In order for a physical change to take place it's easier to just undo what happened then if it was a chemical change because in order for very few chemical changes to reverse to it's original substance you would need another chemical change.
Joyce poured 200 milliliters (mL) of water into a beaker, placed a thermometer in it, and heated it until it started to boil. She recorded a temperature of 100 degrees Celsius (°C) when it started to boil. She repeated the process with 400 mL of water. What would be the temperature when this second sample started to boil?
Answer:
100°C
Explanation:
The boiling point of water is 100°C and the difference is when will the water start boiling.
Which isotope of sulfur is the most naturally abundant
Answer:
The Isotope of sulfur.
32S 94.99% stable.
33S 0.75% Stable.
Explanation:
What is the difference between Chemistry and Alchemy?
Answer:
The difference between alchemy and modern chemistry is alchemy is based on a mystic, supernatural view of reality, whereas chemistry assumes reality is basically natural.
Explanation:
hope this helps!