Boron is a non metallic element and the only non-metal of the group 13 of the periodic table the elements.
Hope this helps, have a great day!
A sample of gas has a volume of 2.0 liters at a pressure of
1.0 atmosphere. When the volume increases to 4.0 liters, at constant temperature, the pressure will be
a. 0.50 atm
b. 2.0 atm
c. 0.25 atm
d. 1.0 atm
PLEASEEEE HELP URGENTTTT
Answer:
i don't see the question
Explanation:
How are the four kinds of DNA nucleotides different from each other?
Answer:
The sugar in DNA is deoxyribose. ... Nucleotides in DNA contain four different nitrogenous bases: Thymine, Cytosine, Adenine, or Guanine. There are two groups of bases: Pyrimidines: Cytosine and Thymine each have a single six-member ring.
Adenine, Cytosine, Thymine, and Guanine are the four nucleotides that make up DNA. The four nucleotides have different base structures, but they are all composed of a nitrogenous base, a deoxyribose sugar, and a phosphate group.
What are nucleotides ?Nucleotides are organic compounds made up of a phosphate and a nucleoside. They function as monomeric units of the deoxyribonucleic acid and ribonucleic acid polymers, which are both crucial macromolecules for all kinds of life on Earth.
Adenine, Cytosine, Thymine, and Guanine are the four nucleotides that make up DNA. The four nucleotides have different base structures, but they are all composed of a nitrogenous base, a deoxyribose sugar, and a phosphate group.
The quantity of phosphate residues that a nucleotide has determined its name. Adenosine triphosphate, for instance, is the name of a nucleotide that consists of an adenine base and three phosphate residues (ATP). Adenosine diphosphate would be the nucleotide if it has two phosphates (ADP).
Thus, Adenine, Cytosine, Thymine, and Guanine are the four nucleotides that make up DNA.
To learn more about nucleotides, follow the link;
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2 spaceships are in deep space. The distance between the centers of mass of the two spaceships is 300 m, and the force between them is 5.51×10^-7N. If one spaceship has a mass of 24,000 kg, what is the mass of the other spaceship?
Answer:
Mass of the second spaceship is 3.10 × 10⁴ kg 0r 31000 kg
Explanation:
From Newton's law of universal gravitation, the force of attraction , F, between two bodies is directly proportional to the product of their masses and inversely proportional to the square root of the distance between them.
F = Gm₁m₂/d²
m₁ = 24000 kg
m₂ = ?
d = 300 m
F = 5.51 × 10⁻⁷ N
Gravitational constant, G = 6.67 × 10⁻¹¹ N.m²/kg²
Making m₂ subject of the formula : m₂ = F × d² / G × m₁
m₂ = 5.51 x 10⁻⁷ × 300 × 300 / 6.67 × 10⁻¹¹ × 24000
m₂ = 3.1 × 10⁴ kg
Therefore, Mass of the second spaceship is 31000 kg
science question. Can you also tell me what weight has to do with the acceleration?
Pls, Answer ASAP!!!! I have to turn in my HW in 20 mins!!
In the rocket fuel formulation for NASA, 325 grams of solid aluminum (Al) particles are heated with 211 grams of solid iron III oxide (Fe2O3). Show all work and units. Include significant figures in your final answer.
a) Write the balanced equation
b) Calculate the mass of iron produced from the reaction
c) Identify the limiting reagent
d) Determine the amount of excess reactant leftover
Show all work and units. Include significant figures in your final answer.
Answer:
B. Calculate the mass of iron produced from the reaction
Explanation:
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If the energy of a photon of light is 3.37 x 10–19 J, what is the frequency of the light? A. 1.12 x 10–27 s –1 B. 8.90 x 1026 s –1 C. 5.09 x 1014 s –1 D. 6.70 x 10–44 s –1 E. 1.01 x 10–10 s –1
Answer:
The appropriate alternative is option C "[tex]5.09\times 10^{14} \ s[/tex]".
Explanation:
The given value is:
Energy of photon,
E = [tex]3.37\times 10^{-19} \ J[/tex]
As we know,
h = [tex]6.626\times 10^{-34} \ Js[/tex]
Now,
The frequency of the light will be:
⇒ [tex]E=hv[/tex]
On substituting the given values, we get
⇒ [tex]3.37\times 10^{-19}=6.626\times 10^{-34}\times v[/tex]
On solving, we get
⇒ [tex]v=5.09\times 10^{14} \ s[/tex]
If the energy of a photon of light is 3.37 x 10⁻¹⁹ J, then the frequency of the light is 5.09 x 10¹⁴ per sec.
How we calculate frequency?Frequency of light will be calculated by using the below formula:
E = hυ, where
E = energy of photon = 3.37 x 10⁻¹⁹ J
h = plank's constant = 6.626 × 10⁻³⁴ Js
Putting these values on the above equation and calculate for the frequency as:
υ = 3.37 x 10⁻¹⁹ J / 6.626 × 10⁻³⁴ Js = 5.09 x 10¹⁴ per sec
Hence, option (C) is correct i.e. 5.09 x 10¹⁴ per sec.
To know more about frequency, visit the below link:
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A balloon takes up 625 L at 0°C. If it is heated to 80°C, what will its new volume be?
Answer:
Me gusta tu corte G
Explanation:
Fill in the blanks and name the process.
What is the process of ____ reproduction where a cell makes ___ of itself?
5.25 ml of substance A has a mass of 3.9 g and 6.24 ml of substance B has a mass of 4.4 g. Which liquid is more dense?
Answer:
A is more dense
Explanation:
The is because you can find the density of anything by dividing the Mass by volume A is .7428 and B is .7051 . There fore A is denser .
Write the complete electron configurations for
(i) copper
(ii) xenon
Answer:
hello to get it from you and your favouri love your pic
Why does air with higher amounts of water vapor have a lighter density?
Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.
Write the formulas for the following ionic compounds.
potassium iodide
magnesium phosphide
silver sulphide
iron(III) bromide
magnesium hydroxide
sodium sulphate
lead (IV) nitrate
ammonium carbonate
Answer:
1) KI
2) Mg3P2
3) Ag2S
4) FeBr3
5) Mg(OH)2
6) Na2SO4
7) Pb(NO3)4
8) (NH4)2CO3
How many particles are in 5.00 grams of nitric acid?
Answer:
0.0500
Explanation:
which particle has the least mass
a. electron
b. proton
c. neutron
d. all have the same mass
Answer:
b. proton
Explanation:
The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom. Electrons have an electric charge of −1, which is equal but opposite to the charge of a proton, which is +1.
What molecules would you expect to find in air
Answer:
The air in the atmosphere consists of nitrogen, oxygen, which is the life-sustaining substance for animals and humans, carbon dioxide, water vapour and small amounts of other elements (argon, neon, etc.). Higher in the atmosphere air also contains ozone, helium and hydrogen.
Explanation:
Answer:
nitrogen, oxygen, carbon dioxide, water vapour, ozone, helium, and hydrogen.
Explanation:
What do you already know about the structure of a water molecule?
Answer:
The key to understanding water's chemical behavior is its molecular structure. A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons
Explanation:
Hope it helps
A company that is concerned about the environment wants to encourage the use of their fuel cell cars, so they are putting
together information to help sell the cars. They want to be sure their material is accurate. Which piece of information is
true about fuel cell cars?
O Fuel cell cars are cheaper to buy. Fuel cell cars reduce use of non-renewable fossil fuels
Fuel cell cars are more powerful than gasoline-powered vehicles.
Fuel cell cars allow for the safe storage of hydrogen gas at filling stations.
Answer:
B. Fuel cell cars reduce use of non-renewable fossil fuels
Explanation:
What makes up soil and where do these main components come
from? ASAP
Answer:
Soil is a mixture of minerals, dead and living organisms (organic materials), air, and water.
Explanation:
Dead organisms decompose(kind of like fertilizer)
water comes from nearby watersheds, precipitation processes, etc.
Answer:
Soil is made up of three main components – minerals that come from rocks below or nearby, organic matter which is the remains of plants and animals that use the soil, and the living organisms that reside in the soil. The proportion of each of these is important in determining the type of soil that is present.
What is the molality of a solution containing 30.0 g of napthalalene (C10H8) dissolved in 500.0 g of toulene? Please provide work. Thanks in advance!
Answer:
0.468 m
Explanation:
From the question given above, the following data were obtained:
Mass of napthalalene (C₁₀H₈) = 30 g
Mass of toulene = 500 g
Molality =?
Next, we shall determine the number of mole in 30 g of C₁₀H₈. This can be obtained as follow:
Mass of C₁₀H₈ = 30 g
Molar mass of C₁₀H₈ = (12×10) + (8×1)
= 120 + 8
= 128 g/mol
Mole of C₁₀H₈ =?
Mole = mass / molar mass
Mole of C₁₀H₈ = 30 / 128
Mole of C₁₀H₈ = 0.234 mole
Next, we shall convert 500.0 g of toulene to Kg. This can be obtained as follow:
1000 g = 1 Kg
Therefore,
500 g = 500 g × 1 Kg / 1000 g
500 g = 0.5 Kg
Finally, we shall determine the molality of the solution. This can be obtained as follow:
Mole of solute (C₁₀H₈) = 0.234 mole
Mass of solvent (toulene) = 0.5 Kg
Molality =?
Molality = mole of solute / Kg of solvent
Molality = 0.234 / 0.5
Molality = 0.468 m
Which element is the first element in group 13 of the periodic table of elements?
Answer:
Boron
Explanation:
Answer:
Boron
Explanation:
Boron is the first element of Group 13 and is the only metalloid of the group. Its chemical symbol is B, and it has an atomic number of 5. Boron has the electron configuration [He] 2s 2 2p 1 and prefers an oxidation state of +3. Boron has no natural elemental form; it forms compounds which are abundant in the Earth's crust.
if you help me, you are the best
Answer:
The following numbers are true for protons:
2.
5.
7.
Explanation:
I know for a fact that Protons have a positive charge
they are located inside of the nucleus
Go.ogle says that they aren't involved in bonding
And it says that it has a mass of one
I hope this helps chu <3
If a 60-g object has a volume of 30cm3 what is its density
Answer:
2 g/cm3
Explanation:
Density is a measure of a substance's mass over its volume.
d = m/v
Therefore d = 60g/30cm3 = 2 g/cm3
What phase change occurs when a solid changes into a gas?
Answer:
Sublimation
Explanation:
Sublimation is the term used to describe when a solid "skips" the liquid phase and turns directly into a gas from solid form. Dry ice demonstrates sublimation when exposed to room temperature air.
Magnesium reacts with the oxygen in the air to form magnesium oxide. If 35 g of O2 was used in the reaction. How many Liters of O2 were present at 301K and a pressure of 1.35 atm?
Answer:
20.02 Liters
Explanation:
Mass = 35g
Volume = ?
Temperature = 301K
Pressure = 1.35 atm
The relationship between the quantities is given as;
PV = nRT
n = mass / Molar mass = 35 / 32 = 1.09375 mol
V = nRT / P
V = (1.09375 * 0.0821 * 301) / 1.35
V = 20.02 L
How do gut bacteria help people?(1 point)
A
by making enzymes to break down food
B
by causing a variety of digestive disorders
C
by releasing compounds that kill harmful bacteria
D
by training other bacteria to treat infection
Answer: the answer would be B
WHAT IS THE CHEMICAL REACTION
Answer:
hi
Explanation:
Chemical reactions are an integral part of technology, of culture, and indeed of life itself. Burning fuels, smelting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions that have been known and used for thousands of years. Chemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.
-facts
Select ALL that apply.
What factors affect wave height?
Lesson 2.14
Fetch
Strength of wind
Direction of the wind
Duration of wind
The factors affect wave height is the duration of the wind
Answer:
all answers are correct
Fetch
Strength of wind
Direction of the wind
Duration of wind
Explanation:
i took the quiz hope this helps!
during the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above?
a)CH4(g) + 2O(g) ↔ CO2(g) + 2H2O(g)
b)CH4(g) + 2O(g) ↔ CO(g) + 2H2O(l)
c)CH4(g) + 2O2(g) ↔ CO2(g) + 2H2O(g)
d)CH4(g) + 2O2(g) ↔ CO(g) + 2H2O(l)
Answer:
a) cH4(g) +2O(g)__ CO2(g) +2H2O(g)
I hope this help
How many moles of oxygen are required to use up 2 moles of propane?
Answer:
6.0 moles
Explanation:
The thing to remember about balanced chemical equations is that the stoichiometric coefficients added to each chemical species that takes part in the reaction are equivalent to moles.
I think its 10 moles, hope this helps.