54:63 ratio simplest form?
Answer:
The fraction is 6/7
Explanation:
6/7 is the simplified fraction for 54/63 by using the GCD or HCF method. Thus, 6/7 is the simplified fraction for 54/63 by using the prime factorization method.
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Can I have Brainliest???
I need help with this pls
Answer:
[tex]1)20 \\ 2)13 \\ 3)82 \\ 4)56 \\ 5)26 \\ 6)1 \\ hope \: it \: helps \\ plzzz \: mark \: it \: as \: brainliest...[/tex]
In the passage, you read about Dalia Kirschbaum, a geomorphologist. In her work, she uses weather data collected
by NASA satellites to study which events?
Answer:
Landslides
Explanation:
Answer:
Landslides
Explanation:
Correct on edge
Help!!!!
A termplate of a Venn diagram representing common and differentiating characteristics of covalent and ionic bonds is
shown.
lonic
Bond
Covalent
Bond
A
C
Which of the following characteristics can be written only in space B?
O Occurs in substances that have at least one non-metal
O Occurs in substances that have a repeating lattice structure
O Occurs in substances that have discrete molecular structure
O Occurs in substances that have high melting points
Answer: it ISNT occurs in substances that have discrete molecular structure
Explanation:
I took the test
The characteristics that can be written only in space B is they occur in substances that have at least one non-metal. The correct option is A.
What is ionic and covalent bond?Ionic bonds are formed when two electrically charged elements shred their charged ions. Covalent bonds are formed when there is a mutual sharing of electrons between the atoms.
One condition that is similar in both is both bonds needed one non-metal to form the bond.
Thus, the correct option is A, which occurs in substances that have at least one non-metal.
Learn more about the ionic and covalent bonds, here:
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Pls
A 3.74-L cylinder contains 4.17 g of methane, CH4, at a pressure of 3020 mmHg. What is the temperature of the gas
Answer:
T = 694 K
Explanation:
Given the following data:
V= 3.74 L
mass = m = 4.17 g
P = 3020 mmHg x 1 atm/760 mmHg= 3.97 atm
We use the ideal gases equation to calculate the temperature (T):
PV= nRT ⇒ T= PV/nR
We calculate n (number of moles of methane gas) by dividing the mass into the molar mass of methane (CH₄):
molar mass(CH₄) = MM = (1 x 12 g/mol)+ (4 x 1 g/mol) = 16 g/mol
n = m/MM= 4.17 g/(16 g/mol)= 0.261 mol
Finally, we calculate T:
T= PV/nR = (3.97 atm x 3.74 L)/(0.261 mol x 0.082 L.atm/K.mol) = 694 K
How do other factors shape earths surface
Answer:
Other factors shape earths surface are:
Factors that Shape Earth's Surface.
Unit Notes.
Plate Tectonics. Continental Drift. ...
Results of plate movement. ...
Weathering. ...
Erosion and Deposition.
When zinc and HCl are reacted, the product is hydrogen gas. You can measure the reaction rate by measuring what?
PLEASE HELP ME
Answer:
measuring the consumption of the products and the rate of conversion of products to reagents
Explanation:
It must be taken into account that the reaction rate also depends on the presence of a catalyst, since these advance the rate of the reaction.
6.
What volume does 14.0 g of Hydrogen gas (Hz) take up at a temperature of 30°C and a pressure of 120 kPa?
Note: Use Ideal gas law. R=8.31 (kPa x L)/(mol x K)
Answer:
V = 146.87 L
Explanation:
Given data:
Mass of sample = 14.0 g
Pressure of sample = 120 kpa
Volume of gas = ?
Temperature of gas = 30°C
Solution:
Number of moles of gas:
Number of moles = mass/molar mass
Number of moles = 14.0 g/ 2 g/mol
Number of moles = 7 mol
Pressure of gas:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 8.31 KPa.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
30+273 = 303 K
by putting values,
120 KPa × V = 7 mol × 8.31 KPa.L/ mol.K × 303 K
V = 17625.51 KPa .L/ 120 KPa
V = 146.87 L
What is and ionic bond and how it forms and why it forms
How many electrons are in the nucleus of an atom with an atomic number of 7?!!
A sealed balloon containing 0.51 L of air is carried from Toronto (P-1.01 atm) to Whistler (P=0.78 atm). What would the volume of the bag be in L) upon arrival in Whistler ?
Assume constant temperature and ideal gas behaviour.
Write your answer with 2 significant figures. Enter the number only - do not enter units.
The volume of the bag would be in (L) upon arrival in Whistler : 0.66
Further explanationBoyle's Law
At constant temperature, the gas volume is inversely proportional to the pressure applied
[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]
V₁=0.51 L
P₁=1.01 atm
P₂=0.78 atm
[tex]\tt V_2=\dfrac{P_1.V_1}{P_2}\\\\V_2=\dfrac{1.01\times 0.51}{0.78}\\\\V_2=0.66[/tex]
What does it mean when someone has done multiple trials? A. They have performed an experiment once and reported their findings. B. They have performed a scientific experiment more than once. C. They have performed an experiment that can only be performed once. D. They have designed an investigation to answer a question.
A. They have performed an experiment once and reported their findings.
After burning your candle for a few hours you and your friend notice that it's mass has decreased. Your friend claims that the mass "disappeared". Why do you know he is wrong (Hint: it's a Scientific Law)? What actually happened to the mass? What form is that mass in now? What is this process called?
Answer:
The law of conversion of mass is a scientific law that says that mass or matter can not be created or destroyed like energy but changes its form in a different type of state. So, by the law of conversion of mass, you can say that mass is not disappeared but change in different forms of states of matter like gas, soot, or melted residues of candle and ash of thread.
Due to this, the mass of the solid or waxy state due to burning changes to gas released by burning and residue of wax that will be equal to the mass of the original mass.
Electromagnetic Waves can propagate (move through);
Answer:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Explanation:
During a chemical reaction, heat is absorbed. What kind of reaction occurred?
A)
An endothermic reaction
B)
An exothermic reaction
Answer:
b
Explanation:
During a chemical reaction, heat is absorbed. What kind of reaction occurred?
A) An endothermic reaction
B) An exothermic reaction
Answer:
Endothermic and exothermic reactions are chemical reactions that absorb and release heat, respectively. A good example of an endothermic reaction is photosynthesis. Combustion is an example of an exothermic reaction. The categorization of a reaction as endo- or exothermic depends on the net heat transfer.
Explanation:
Answer:
An endothermic reaction
Explanation:
The heat is being absorbed so it's and endothermic reaction
What type of reaction is FeS + 2HCl àFeCl2 + H2S?
Answer: 3 4 a noodles
Explanation: just is[tex]\lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \sqrt{x} x^{2} x^{2}[/tex]
Which group below correctly list bases that completely dissociate in water
Explanation:
Where's the question?
what is avogrados number and why is it useful
Answer:
Avogadro's number is 6.022×1023 molecules. With Avogadro's number, scientists can discuss and compare very large numbers, which is useful because substances in everyday quantities contain very large numbers of atoms and molecules.
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The elements fluorine (F), chlorine (Cl), and iodine (I) are all part of the same _________on the periodic table.
Explanation:
The elements Fluorine (F),Chlorine (Cl) and Iodine (I) are all part of the same Group ( i.e, Group 17 ) on the periodic table.
Answer:
Group
Explanation:
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The following reaction shows calcium chloride reacting with silver nitrate.
CaCl2 + 2AgNO3 → 2AgCl + Ca(NO3)2
How many grams of AgCl are produced from 30.0 grams of CaCl2?
(Molar mass of Ca = 40.078 g/mol, Cl = 35.453 g/mol, O = 15.999 g/mol, Ag = 107.868 g/mol, N = 14.007 g/mol)
A. 19.4 grams
B. 38.8 grams
C. 58.2 grams
D. 77.5 grams
Explanation:
Molar mass of CaCl2 = 110.98g/mol
Moles of CaCl2 = 30.0 / 110.98 = 0.270mol
Moles of AgCl = 0.270mol * 2 = 0.540mol
Mass of AgCl = 0.540mol * (143.32g/mol) = 77.39g.
Answer:
77.5
Explanation:
You gotta round.
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Give the structure of the principal organic product formed on reaction of benzyl bromide with sodium hydrogen sulfide.
Answer:
Phenylmethanethiol
Explanation:
Benzyl bromide is a compound from the toluene family with an alpha position substituent of bromine. When this compound (Benzyl bromide) reacts with sodium hydrogen sulfide, it yields a principal organic product called Phenylmethanethiol which is an alpha-toluenethiol that belongs to a group of aromatic compounds containing one monocyclic ring system comprising of benzene.
73 gram of HCl was filluted by adding 144gram of water.how many gram atom of hydrogen are present in the dilute acid?
Mass of Hydrogen atoms : 18 g
Further explanationGiven
73 gram of HCl
144gram of H₂O
Required
Mass (gram) atom of Hydrogen
Solution
H atoms are in 2 compounds, H₂O and HCl, so we calculate their mass in each compound
mass H in H₂O :[tex]\tt \dfrac{1}{36.5}\times 73=2~g[/tex]
mass H in HCl :
[tex]\tt \dfrac{2}{18}\times 144=16~g[/tex]
total mass = 2 g+ 16 g = 18 g
Whats the answer giving brainliest have a good day lol help
Answer: i would say north pole because the sunlight has to change directions to reach it if that makes since
Explanation: sorry if im wrong
The compound with the molecular formula C4H10 is called
Answer:
butane
Explanation:
I hope this helps!
Answer:
Butane
...............
NH3(aq) + HNO3(aq) → NH4NO3(aq) Calculate the volume of an acid (1.5 M HNO3) needed to neutralize the 1.5 M HNO3.
Answer:
NH3(aq) + HNO3(aq) → NH4NO3(aq) Calculate the volume of an acid (1.5 M HNO3) needed to neutralize the 1.5 M HNO3.
Explanation:
Why do leavening gases expand faster at higher altitudes
Answer:
Cakes, breads and other foods that contain leavening agents rise more quickly at higher altitudes, because gases produced by the agents expand faster than at sea level. The loaves may collapse if the gases dissipate before the proper temperature is reached. Most baking recipes can be adjusted for high altitudes.
Explanation:
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What is the nuclear charge of an atom of Silver?
A) +79
B) +47
C) +108
D) +61
Answer:
47 is your correct ans, which is b
what tell us how much an atom wants to gain an electron ?
Answer:
more than 8 atoms wants to gain an electron