Answer:
Gas and Liquids
Explanation:
Please help will mark brainliest!! What is the main point of paragraph 3?
Answer:
the highest frequency
Explanation:
click on the picture of the flowers until their colors correspond to the punnett square above. HELP PLZ!
Answer:
You will need to have a red flower in the top left, a pink flower in the top right and bottom left, and a white flower in the bottom right.
Explanation:
This flower appears to express color through codominance, which means that both genes express themselves. "R" is the dominant gene for red, and "r" is the recessive gene for white. When a flower has RR genotype, the phenotype will be a red flower. When a flower has an Rr genotype, the red and white genes will both be expressed and the phenotype will be pink. When a flower has an rr genotype, it lacks the red gene and will therefore be only white.
Pl help it’s for a grade and I can’t find it
Answer:
personally I think it's a but it could also be D.
But yeah personally I would say A
Given the following balanced equation:
2KCIO3 --> 2KCI + 302
How many grams of potassium chloride are produced when 45.Og of potassium
chlorate are decomposed?
0 27.4
0.04
0 2.74
O 0.4
Answer:
0.04
Explanation:
Why is it important to know characteristics that matter undergoes in chemistry? How can we analyze the relationships between chemical and physical changes and properties?
Extension Questions: What is the study of Chemistry? Who are some of the important people who have contributed to the field? How do regular Americans interact with Chemistry around them?
How can we understand the historical development of the Periodic Table and apply its predictive power?
Extension Questions: Describe different chemical principles and systems. How does the layout of the periodic table allow you predict other element's properties? Consider all types and groups of elements.
Why is it important to know and understand the historical development of atomic theory?
Extension Questions: How does the atom relate to the elements of the periodic table? What are your most common models and how do they relate to the current atomic model? What theories don’t hold true today if any?
How do atoms combine to form ionic, covalent, and metallic bonds?
How can we write and balance chemical equations using the law of conservation of mass?
Answer:
Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything.
Can i titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer
Answer:
No, I don't think so at least
Explanation:
In chemistry, you do calculations to find the concentration of a solution with another solution of KNOWN concentration. Without concentrations of either solution, were would you get values from? Where would you start? :3
You can not titrate a solution of unknown concentration with another solution of unknown concentration and still get a meaningful answer.
Titration involves the standardization of unknown solution using a standard solution. By this definition, titration must involve a standard solution.
Since the two unknown solutions are not standardized, we can never get a meaningful answer because we can not be able to perform any calculation unless we have a standard solution.
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how do i break my leg
Answer:
why would u want 2?
Explain in the comments why.
If 5 moles of sugar was added to a kilogram of water, the new boiling point would be _____ degrees C.
Write your answer to the nearest hundredth.
Answer: 102.56
Explanation: I just took the K12 test and this is my answer.
What is the percent composition of Mg in the compound Mg3(PO4)2?
Question 8 options:
A. 23.57%
B. 21.92%
C. 27.74%
D. 32.32%
Answer:
c
Explanation:
trust me its reasonanle
Per cent composition of Magnesium (Mg) in Magnesium Phosphate compound ie [tex]Mg_3(PO_4)_2[/tex] is 27.74%. Hence, option C is correct.
What is per cent?Percent is from the Latin adverbial phrase per centum meaning “by the hundred.”
Determination of the percentage composition of Mg in Mg₃(PO₄)₂
Molar mass of Mg₃(PO₄)₂ = 262 g/mol
Mass of Mg in Mg₃(PO₄)₂ = 24×3 = 72 g
Percentage composition of Mg =?
[tex]Percentage = \frac{Mass \;of \;elements x 100}{Mass \;of \;compound}[/tex]
[tex]Percentage = \frac{72 X 100}{262}[/tex]
27.74%.
Hence, option C is correct.
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How do the valency and the atomic size of the element vary while going from left to right along a period in The modern periodic table?
Answer:
Atomic size decreases on going along a period from left to right because the electron enters into the same shell, therefore, attraction between nucleus and outermost electron increases and thus atomic size decreases. Valency first increases from 1 to 4 and then decreases from 4 to GO along a period from left to right.
Answer:
kha gya vo chasmis ........
3. Describe the process behind how students recover an individual's remains from a surface grave.
Answer:
By using the techniques of archeology.
Explanation:
Students recover an individual's remains from a surface grave by using the techniques of archeology field to scrape away the layers of soil from that remains in a way that the remains can't be damaged. If they find the remains within 10 centimeters of digging, they can dig down further in order to dig out all the remains safely. The instruments of archeology field are used because they are light and can be used to dig out fossils of ancient organisms.
A tall plant (Tt) is crossed with a short plant (tt). What percent will be short?
Group of answer choices
75%
0%
100%
50%
25%
it should be 50/50 percent
so 50%
hopefully this is right !
I’ll really appreciate it if you help me out with these 2 questions .
What is the application of flotation
Answer:
The law of floatation is applied in all vessels which travel by waterways that include ships, submarines and ferry boats. It is also applied in some vessels which travel by air ways such as hot air balloon and air ship. Balloons of different colors and shapes are filled with lighter gas so that will float in air.
Answer:
*hot air balloon
*swimming
Explanation:
sna makatulong po:)
Consider the following reaction occurring in a 1.0 L container:
H2 (g) + I2 (g) → 2 HI (g)
State 2 requirements for a successful collision between H2 and I2.
Answer:
jjjjajwhejwhswjiwiwvssvwvow9qiwgdvdbslw
Please help me with this homework
If some methane gas at 115 kPa and 33C is allowed to expand to 15.0dm^3 from 8.00 dm^3 when the temperature changed to 51.2 C. What pressure will the same amount of gas exert?
Answer:
228.4 kPa
Explanation:
From thw question,
PV/T = P'V'/T'..................... Equation 1
Where P = Inital pressure, T = Initial Temperature, V = Initial Volume, P' = fInal Pressure, V' = Final volume, T' = Final Temperature.
Make P' the subject of the equation
P' = PVT'/TV'...................... Equation 2
Given: P = 115 kPa, V = 15.0 dm³, T = 33°C = (33+273) K = 306 K, T' = 51.2°C = 51.2+273 = 324.2 K, V' = 8.00 dm³
Substitute these values into equation 2
P' = (115×15×324.2)/(306×8)
P' = 228.4 kPa.
A tank contains helium gas at 585 mmHg, nitrogen gas at 0.76 atm, and neon at 940 torr. What is the total pressure
Answer:
2.77 atm
Explanation:
The total pressure of a mixture of gases is calculated as the addition of the partial pressures of the gases. In this case, the total pressure (Pt) is calculated from the partial pressures of helium (PHe), nitrogen (PN₂) and neon (PNe):
Pt = PHe + PN₂ + PNe
First, we have to convert the partial pressures to the same unit (atm). For this, we have to know that 1 atm=760 mmHg=760 Torr
PHe = 585 mmHg x 1 atm/760 mmHg = 0.77 atm
PN₂= 0.76 atm
PNe= 940 Torr x 1 atm/760 Torr = 1.24 atm
Finally, we calculate the total pressure in atm:
Pt = 0.77 atm + 0.76 atm + 1.24 atm= 2.77 atm
2. Calculate the mass of Kool-Aid needed to make 0.1 L solutions at the following concentrations: a. 0.1 M b. 0.2 M c. 0.3 M d. 0.4 M e. 0.5 M
Explain why the temperature of the water decreased when the cold water was added to the hot water
Answer:
The water is clearly close to boiling temperature when you add the ice. So, initially the ice cools the water that is near it to near 0degC. Water between about 0 and 8 degrees is more dense than hotter water, so the cold water sinks to the bottom.Jun 14, 2020
Hope this helps if so don't hesitate to 'Thanks' and/or 'brainliest' this answer!
Answer:
hot water has more melting point
Explanation:
hot water has more melting point
hot water cpyld be boiled
1 and 2 answer choice help please?
Answer:
I think its b be ause it looks like a better answer and it has some detail to it
How many grams of water should be added to 4.00 g NaOH to create 2.00% by mass NaOH solution?
Answer:
196 grams
because ^^^ was wrong and person in comments said it was 196 and it was right
When NaOH of 4.00 g is being added with water, the mass of water required to create 2.00% of NaOH solution by mass is 196 g.
What is mass percent of solute?It means that the particular amount of solute in terms of percentage is present in the solute.
Given the mass of the solute, NaOH is 4.00g
Suppose the mass of water required to add is x in g.
The mass percent of the solute is
[tex]\dfrac{2}{100} =\dfrac{4.00}{4.00 +x }[/tex]
x =196 g
Therefore, mass of water required to create 2.00% of NaOH solution by mass is 196 g.
Learn more about Mass percent of solute.
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Which organ detects stimuli from the environment and is part of the nervous system?
Group of answer choices
A. eye
B. stomach
C. heart
D. lungs
It's the eye because it's the organ of sight
help, please? What science law explains why there should always be the same type of elements on the reactant side as there are on the product side? What does this law state? (HINT: Answer both of these questions. A: The Law of _________________ states that _____________.)
Answer:
the law of conservation of energy states that energy neither created nor destroyed that means in a chemical reaction Mass reactants ( starting material)=tomass of produt
What mass of NaHCO3 is needed to produce 2.659 mol of CO2?
The mass of NaHCO₃ needed to produce 2.659 moles of CO₂ is 446.712 g
We'll begin by writing the balanced equation for the reaction. This can be obtained as follow:
2NaHCO₃ —> Na₂CO₃ + CO₂ + H₂O
Molar mass of NaHCO₃ = 23 + 1 + 12 + (16×3)
= 84 g/mol
Mass of NaHCO₃ from the balanced equation = 2 × 84 = 168 g
From the balanced equation above,
168 g of NaHCO₃ decomposed to produce 1 mole of CO₂.
With the above information, we can obtain the mass of NaHCO₃ needed to produce 2.659 moles of CO₂. This can be obtained as follow:
From the balanced equation above,
168 g of NaHCO₃ decomposed to produce 1 mole of CO₂.
Therefore,
Xg of NaHCO₃ will decompose to produce 2.659 moles of CO₂ i.e
Xg of NaHCO₃ = 168 × 2.659
Xg of NaHCO₃ = 446.712 g
Thus, 446.712 g of NaHCO₃ is needed to produce 2.659 moles of CO₂.
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Plz answer question! Due in 7 minutes!!! Will make BRAINLIEST for first correct answer!!!
Molar Mass:
Find the molar masses of the following compounds. Also report the number of atoms in the compound:
1) NaBr
2) PbSO4
3) Ca(OH)2
4) Na3PO4
5) (NH4)2CO3
6) C6H12O6
7) Fe3(PO4)2
8) (NH4)2S
9) Zn(C2H3O2)2
10) AgF
Answer:
Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.
Explanation:
We study the various atomic models in our course of study because, it is important for us to know, how did people come to the present concept of an atom. How did physics evolve from classical to quantum physics.
All these are important for us to know and thus, knowledge about various atomic models, their discoveries and drawbacks and finally improvements based on scientific evidence present at that time is important for us to understand the underlying theory very well.
Explanation:
A DAY IN THE LIFE OF METIS JOURNAL. I WROTE IT HOPE U LIKE IT XD
We, who live in the west, were Nomadic. So we always moved from place to place to hunt buffalo and other fur-bearing animals. And now again we have to shift everything we collected , like, all the essential needs we collected. It’s really hard to shift stuff, But when you move to a new place you get to see new beautiful places. They are just so satisfying to see! It’s like all my work(like the shifting work) is paid off. I love it! We always meet the Hudson’s bay company employees, and give them furs which we took from the bissons and other furry animals we hunted. And in exchange they give us their (Hudson’s Bay company) goods. Which is good! Because then we or I won't be able to enjoy that delicious pemmican!
The one reason that makes me proud of my parents is that because of them I am like a translator for both sides in the fur trade! Anyways coming back to the present. As I said before, we were moving today to another place, But on the way some people along with my father will ride the famous York boats carrying supplies to fur posts. I begged my father to take me with him! And as usual he gave me some silly reason for me to stay. And now since I don’t have anything to do I will-..Nevermind, My mom’s calling me. Okay after helping my mom keep the fur posts into the York boats me , my mom, and the others are just relaxing and enjoying nature just to take a break. Since, I am so obsessed with my Journal notebook today I’m just going to sit here and right what comes to my mind. I’m not like the others who always seem to be talking with someone. I like my own space!
I kind of miss my dad already, but he and his fellow members need to travel the waterways from the red river further west and north to hudson bay. These red river carts also travel the trek back and forth over land to St. Paul, Minnesota and to posts in saskatchewan. Speaking about the red river, the only large settlement in the region is the red colony. About 12000 people lived in this colony around Fort Garry. Some were the original Selkirk settlers or their descendents. They had come from Scotland with lord Selkirk when he established the colony in 1811. Many of these original settlers were poor farmers who had been displaced from their lands in scotland. They had endured many hardships in the early years of settlement, including foods, hunger, and sickness. I love studying about other colonies, cultures , history etc.
What is a fault, and how does the existence of faults support the theory of plate tectonics?
“Many of the objections are long standing but apparently unknown to many geophysicists, while some are peculiar to the new global tectonics. The conclusions drawn, in order of probability, are (1) the continents have almost certainly not moved with respect to each other; (2) convection is not active throughout the whole mantle; (3) even if convection is active in the upper mantle it cannot account for drift; (4) pole positions derived from paleomagnetism, and results of this method of investigation in its global form generally, are afflicted with an unknown cause of error and are in any case too inexact for drift reconstructions.”
(Wesson, 1972)
During photosynthesis, plants change light energy into:
chemical energy
solar energy
mechanical energy
electrical energy
i will mark brainlest
Answer:
chemical energy
Explanation:
just put that
Answer:
chemical energy
Explanation:
it is the light dependent reaction
In the atmosphere, it is more common to find two oxygen molecules joined together than to find a single atom of oxygen. Why? What would that molecule look like? What would this molecule be called?
Answer:
See explanation
Explanation:
Oxygen has six electrons in its outermost shell. This means that its octet can be completed when it shares two electrons with another oxygen atom.
In a covalent bond, each bonding atom contributes one electron to the bond. This means that four electrons are shared between two oxygen atoms. Each atom contributes a total of two electrons which are shared. This molecule of oxygen satisfies the octet rule rather than a single atom of oxygen.
An image of the oxygen molecule is attached to this answer.
This system of two oxygen atoms joined together in a covalent bond is called an oxygen molecule(O2).
