Answers
Answer:
silk are the answer of the question
Related Questions
A chemical reaction produces 138 mol of HBr gas. What volume will that gas occupy at STP?
3.09E3 L
3.09E4L
22.4L
3.25E2L
Answers
The chemical reaction at STP results in a volume of HBr gas that is roughly 3.09E3 L.
An example of a chemical reactionIn a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy.
The temperature is 273.15 K and the pressure is 1 atm at STP (standard temperature and pressure).
The ideal gas law can be rearranged to account for V:
V = (nRT) / P
Substituting the values we are aware of:
n = 138 mol
R = 0.0821 L·atm/(mol·K)
T = 273.15 K
P = 1 atm
V = (138 mol * 0.0821 L·atm/(mol·K) * 273.15 K) / 1 atm
V = 3,092.1 L
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You are given a sample of an unknown solution and are tasked with determining the density. The solution is miscible with water, so you cannot use a float test. To complete this task, you begin by obtaining a clean dry beaker and measure its mass on a balance (120.3621 g). You then use a pipet to transfer the liquid into the beaker. The initial reading on your pipet is 4.126 mL and after you have dispensed the liquid the pipet reads 6.518 mL. You then obtain the mass of the beaker with the liquid inside (123.0194 g).
_____g/mL
Answers
Answer: 1.11 g/mL
Explanation:
Density = mass/vol
mass 123.0194-120.3621g = 2.6574
vol 6.518-4.126 ml = 2.392
How do you negatively affect the ecosystem of the Great Lakes area?
Answers
Answer:
Threats to the Great Lakes' ecosystems, include invasive species, climate change, pollution, and habitat destruction. Climate change affects water temperatures, weather patterns, and lake levels. Pollutants from residential, agricultural, and industrial areas reduce water quality.
Explanation:
I hope this helps answer your question
:D
Answer:
Other human activities that have had an impact on the Great Lakes include intentional water level regulation, man-made alterations such as dredging, diversions, and water withdrawals, which have resulted in earlier thawing of the lakes, lower water levels, and, of course, the spread of industrial waste.
Explanation:
Naming lonic Compounds
Name the following lonic Compounds using the lonic naming rules. Remember, place the metal's name
first, followed by the non-metal element, replacing the ending with ide"
1.SrBr,
2.NaCl
3. Mgs
4. LIP
5. Ko
6. Ca N,
7. Balz
Answers
Answer:
1.storantium bromide
2.sodium chloride
3.magnesium sulphide
4.lithium polymer
5.potassium hydroxide
6.calcium nitride
7.it decomposition of tetrafluroborates and hexaflurophosphates
The sexual reproduction of plants occurs through what process? (2 points)
a
Finalization
b
Fermentation
c
Pollen production
d
Pollination
Answers
Answer:
Pollination
Explanation: Involves production of male and female. Sexual reproduction is also the flowering of plants.
How many atoms are in 6.30 moles of sulfur (S)?
Answers
Answer: 3.79*10^24 atoms
Explanation:
1 mole = 6.02214076*10^23 atoms
Which of the following is a binary ionic compound?
a Sulfuric acid
b Hydrogen sulfide
с
Sodium fluoride
d None of the above
Answers
Answer:
D; none of the above
Explanation:
Binary ionic compounds are composed of one metal and one nonmental.The metals are always the first element whereas the nonmetals are the second element.
Answer: Sodium fluoride
Grasses living in an area have shallow but widespread roots that grab
the ground. They can grow their leaves fast even after losing them.
What can we say about these plants?
Answers
How many grams of propane, C3H8, are needed to make 140 grams of water?
Answers
Answer:
85.6 g
Explanation:
Step 1: Write the balanced combustion equation
C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O
Step 2: Calculate the moles corresponding to 140 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
140 g × 1 mol/18.02 g = 7.77 mol
Step 3: Calculate the moles of C₃H₈ needed to produce 7.77 moles of H₂O
The molar ratio of C₃H₈ to H₂O is 1:4. The moles of C₃H₈ needed are 1/4 × 7.77 mol = 1.94 mol.
Step 4: Calculate the mass corresponding to 1.94 moles of C₃H₈
The molar mass of C₃H₈ is 44.10 g/mol.
1.94 mol × 44.10 g/mol = 85.6 g
The bear population in a national forest was monitored for ten years. The collected data for two winter months can be seen in the bar graph. Which statement would be a researcher observation from the data collected during the ten years?
Answers
Answer:
C. is the answer i did the test and it was right.
Answer:
is D
Explanation:
largest bear population Feb 2000
What is the difference between a renewable and non-renewable source of energy? Give 3 examples of each.
Answers
Answer:
There are two major categories of energy: renewable and non-renewable.
Non-renewable energy resources are available in limited supplies, usually because they take a long time to replenish. The advantage of these non-renewable resources is that power plants that use them are able to produce more power on demand. The non-renewable energy resources are:
CoalNuclearOilNatural gasRenewable resources, on the other hand, replenish themselves. The five major renewable energy resources are:
SolarWindWater, also called hydroBiomass, or organic material from plants and animalsGeothermal, which is naturally occurring heat from the earthWhile renewable energy resources have the advantage of unlimited supply over the long haul, they are limited in their availability at any given moment.
For example, the sun rises each day, but its ability to generate power is limited when its cloudy. Another disadvantage is that power plant operators can’t crank up renewable energy production when people are consuming more power, such as on a hot day when many people are running air conditioners at the same time.
Which of the following was a major goal of the National Association for the Advancement of Colored People when it
was formed in 1909?
to end integration
to end segregation
to support black nationalism.
O to support the accommodationist approach
When’s end
Answers
Answer:
to end segregation
Explanation:
National Association for the Advancement of Colored People (NAACP), interracial American organization created to work for the abolition of segregation and discrimination in housing, education, employment, voting, and transportation; to oppose racism; and to ensure African Americans their constitutional rights.
To end segregation was a major goal of the National Association for the Advancement of Colored People when it was formed in 1909. Therefore, the correct option is option B.
What is NAACP?
A group of individuals led by W. E. B. Du Bois, Mary's White Ovington, Moorfield Storey, and Ida B. Wells founded the National Association over the Advancement of Coloured People (NAACP) in 1909 as an interracial effort to advance fairness for African Americans. Roy Wilkins and Thurgood Marshall were among the group's leaders.
"To ensure the equal treatment in politics, schools, society, and the economy of the liberties of all persons as to eliminate ethnicity-based discrimination" is its stated objective for the twenty-first century. Political lobbying, public relations campaigns, and legal team-developed lawsuit strategies are just a few of the national NAACP initiatives. To end segregation was a major goal of the National Association for the Advancement of Colored People when it was formed in 1909.
Therefore, the correct option is option B.
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when energy transforms, which of the following does it produce?
A. heat
B. light
C. sound
D. motion
Answers
motion
Explanation:
it works in our daily life
Which statement best describes how an electromagnetic motor works?
Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the
conductor in the orientation of the field
Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the
conductor in the onentation of the field.
Elections are moved through a circuit, creating a current That current interacts with a magnet, moving the
conductor in the orientation of the field
Electrons are moved through a magnet creating a current. That current interacts with a circuit, moving the
conductor in the onentation of the field
Answers
Answer:
electrons are moved through a magnet creating a current. the current instracts with a circuit, moving the conductor in the onentation of the field
Kito puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the figure. Which process takes place when the two objects come together
A. The temperature of the spoon increases, but its thermal energy does not change
B. Energy in the form of heat is transferred from the warmer mashed potatoes to the cooler spoon
C. The thermal energy of both the mashed potatoes and the spoon increases as energy in the form of heat is transferred between them
(please answer quickly, I don't want to fail this test due to being stuck on this one)
Answers
Answer:
B. is the answer
Explanation:
Energy in form of heat is transferred from the warmer mashed potatoes to the cooler spoon.
Which Kingdom does the organism belong to?
Animalia
Protista
Fungi
Plantae
pls help guys
Answers
How many significant figures are there in 8.280?
Answers
Answer:
number of significant figures-4
number of decimals-3
If Maria winks exactly 5 times every minute while she’s awake and she sleeps exactly 8 hours a day how many times does Maria Wink in a day?
Answers
Answer:
192
Explanation:
24-8=16
16x60=960
960/5=192
A reaction that releases energy in the form of heat is called a/n
Answers
Answer:
Exothermic reaction!
Explanation:
Exo -> Releases Heat
Endo -> Absorbs Heat
What is the molarity of a solution that has 2.52 grams of NaCO3 dissolved to
make 0.125 Liters of solution?
Answers
Answer:
Explanation:
2.52g/ 0.125L= 20.16M
10. Benzene deactivating group is:
a. -OH
b. --CH3
c. -C2Hs
d.-CI
Answers
Answer:
CH3
Explanation:
Balance each of the following equations by placing coefficients in front of the formulas as needed MgO(s) Mg(s) + 02(8) ZnCI.(ag)
Answers
Is the equation wrong. Such a equation cannot be formed. pls enter the write equation i will help you
I need 11 12. 13. 14. 15. And 16 please and thank you ❤
Answers
Answer:
11.) Radio
12.) Microwave
13.) Infrared
14.) Ultraviolet
15.) X-Ray
16.) Gamma Ray
Radio waves have the longest wavelength, and gamma rays have the shortest wavelength.
Write the complete balanced chemical equation _A+_BC3->_AC2 +_ B
Answers
Answer:
Prueba con tus argumentos quienes sufren mas con la violencia?
Answer:
Sure! The complete balanced chemical equation for the reaction you provided is: `2A + BC3 -> AC2 + 3B`.
PLEASE MARK AS BRAINLIESTWhat is the meaning of matter?
Answers
Answer:
Explanation:
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
Answer:
Anything that takes up space.
Explanation:
Anything that has both volume and mass.
How would you make up 75 ml of a 45 mg/ml BSA solution?
Answers
Answer: see below
Explanation: for 75 ml, take 45*75 mg of BSA and make up to 75 mL with distilled water.
Why is Pluto a dwarf planet?
Group of answer choices
A) it can't clear its orbital path of smaller objects
B) its not round
C) its too far away from the sun
D) it doesn't orbit the sun
Answers
• In trial 2 of the vinegar-baking soda reaction, how did the masses of reactants and products compare?
Answers
Answer:
Yes (In a closed (or sealed) system, the total mass of reactants and products will remain the same.)
Explanation:
Answer:
they are the same
Explanation:
^_^
Please help me fast What is the Molarity of 100g of Vit. C (C6HBO6) with 2.5L of water?
Answers
If false rewrite the statements to make them correct True or False.
1. Only particles in the solid state are in motion.
2. The particles of a solid have more energy than those of a gas.
3. In a glass of iced tea, tea is the solute.