Answer:
Different alleles and genes determine what gets passed down.
Explanation:
Its a pretty weird/ open ended question, but the alleles that help an organism survive, will be passed down more often because they are more "fit" and can out survive its competitors within a certain species.
What is the volume in mL of 1 Kg of gold? The density of gold is 19.3 g/mL.
Answer:
Volume occupied is approx.
38 ⋅ ML
Explanation:
Density ρ = Mass Volume And thus Volume = Mass ρ = 1.592 ⋅ l b × 454 ⋅ g ⋅ l b − 1 19.3 ⋅ g ⋅ m L − 1 = ? ? ⋅ m L
Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon with oxygen.
A compound contains 40%carbon, 6.7%hydrogen, and 56.3%oxygen
calculate the molecular formula of the compound, if it’s vapour density is 90. Note that molecular
mass=2 x vapeur density
How many protons, neutrons, and electrons are in an atom of beryllium with a mass number of 9?
A) 5 protons,5 electrons,4 neutrons
B) 4 protons,4 electrons,4 neutrons
C) 4 protons,4 electrons,9 neutrons
D) 4 protons,4 electrons,5 neutrons
Answer:
c / a
correct me if im wrong
Answer:
D) 4 protons, 4 electrons, 5 neutrons
How many atoms are in 80.45g of magnesium
Answer:
see below
Explanation:
1. 1 mol Mg = 24.31 g = 6.02 *10^23 atoms
calculate the number of atomsin 80.45g Mg
Numberof atoms = 6.02*10^23 Mg atoms / 24.31 g * 80.45 g
= 1.99*10^24 atoms
2.1 mol C-12 = 12.01g = 6.02 * 10^23 atoms
calculate the mass using
= 12.01 g C / 6.02*10^23 atoms * 100 atoms
= 1.99 * 10^-21 g
Answer:
1.9926 * 10 ^24
Explanation:
Molar Mass - Use Periodic table!
M ( Mg ) = 24.31 g / mole
n = 80.45 g : 24.31 g/mole = 3.31 moles
N a ( Avogadro`s constant ) = 6.02 * 10 ^23
N = Na * n = 6.02 * 10 ^24 * 3.31 = 19.926 * 10 ^23
which tool would be best for measuring centimeters
A. Metric ruler
B. Balance scale
C. Meter scale
D. Measuring tape
Answer:
the answer is d
Explanation:
Help me ASPAPPPPPPPPP
Answer:
Explanation:
1. H2O
Lewis Dot:
See the attachment.
Note the б+ and б- signs on the H and O atoms, respectively. Those represent the slightly positive and slightly negative sides of the water molecule. Those slight charges on a single water molecule are attracted to their opposite charges on neighboring H2O molecules, as shown in the graphic. This interaction is what gives water it's cohesive properties.
3. The property of cohesion describes the ability of water molecules to be attracted to other water molecules. which allows water to be a "sticky" liquid.
The hydrogen bonds are attractions of electrostatic force. They arise due to the difference in charge between the slightly positive hydrogen ion and the slightly negative oxygen ion. Hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond, and it is what gives water it's cohesiveness, or ability to support water spiders, paper clips, and produces a loud noise in the event of a belly flop in a pool (including the yelp from the swimmer).
4. I'm not sure what is being asked for the two blanks. Water is polar and dissolves salts (ionic compounds) and hydrophilic molecules (water-loving molecules).
Name the 4 properties of waves.
Answer:
the 4 properties of waves are frequency, amplitude, wavelength, and speed.
Explanation:
what is an example of force pair
he interaction between a baseball bat and a baseball
Please help me with this three questions
Answer:
1. A. Thyroid Gland Function
B. detecting Blood Clots
C. Treating Cancer
2. An example would be how many are used as tracers for diagnostic purposes
3. Beneficial because it gives us ways to eleminate pests, by the sterile insect technique
Number three is kinda iffy a bit difficult to explain it may be explained better in your book.
1. Why are the world’s rainforests so important?
2. Predict solutions for slowing the loss of biodiversity.
3. Describe three ways humans are contributing to the loss of biodiversity.
4. How does the introduction of invasive, non-native species, threaten biodiversity?
Answer:
1.
Rainforests are important due to the amount of oxygen the tree's produce. It also adds biodiversity and more balance in the food chain of animals.
2.
If we slowed transportation and agricultural farming, greenhouse gases and carbon monoxide would be reduced magnificently.
3.
One way is that Humans are supplying demand for animal agriculture for food (when not need to). The greenhouse gases created by the factories alone are creating much of the ozone's destruction. Also, another reaction to demand of meat is, The space needed for farmland. They burn down much of the rainforest for farmland and grass for the cows and other animals. Thirdly, traveling alone and having many household luxuries aren't helping either. Lowering the use of composite resources and more wind, solar, and water energy can help the earth in total.
4.
Introducing invasive species endangers many of the other species. They could have a advantage or disadvantage over the other species. causing either over, or under, population for many of the species. Throwing the balance of it all off.
What is the excess reactant of water?
Answer:
Hydrogen
Explanation:
An example of this can be In this example, hydrogen is the limiting reagent and oxygen is the excess reagent. The amount of product formed is limited by the amount of hydrogen.
How many grams of water are needed to absorb 456 J if its temperature goes from 22.7 to 98.3 Celsius?
The mass of water needed to absorb 456 J is 1.44 g
We'll begin by calculating the change in the temperature of the water.
Initial temperature of water (T₁) = 22.7 °C
Final temperature (T₂) = 98.3 °C
Change in temperature (ΔT) =?ΔT = T₂ – T₁
ΔT = 98.3 – 22.7
ΔT = 75.6 °CFinally, we shall determine the mass of the waterHeat absorbed (Q) = 456 J
Change in temperature (ΔT) = 75.6 °C
Specific heat capacity of water (C) = 4.184 J/gºC
Mass of water (M) =?Q = MCΔT
456 = M × 4.184 × 75.6
456 = M × 316.3104
Divide both side by 316.3104
M = 456 / 316.3104
M = 1.44 gTherefore, the mass of the water is 1.44 g
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What did you observe about the properties of the sodium carbonate mixture before the substances were mixed together?
Answer:
Would you consider adding a sodium carbonate solution to a magnesium sulfate .
Explanation:
??
why does fluorine have the highest electronegativity
Answer:
Because it only needs one more electron to get to a full valence shell (8), so it really wants it and is pulling other electrons in. It also has to do with needing one more electron to fill the 2p shell. It is a small element which means its electrons are pulled tightly to the nucleus.
Hope this helps!
Explanation:
What does the answer of element 3Na2S2O3?
Answer:
Explanation:
3× 22+2×32+ 6×16=
66+64+96=236
Which element are in the compound CoCI2?
Choose all correct answers.
Answer:
the answer is cobalt and chloride
For an electric toothbrush, is input energy equal to useful output energy? Explain
your answer.
No, input energy is not equal to useful output energy, if it is an electric toothbrush.
What is the useful type of energy produced in an electric toothbrush?Electrical Energy is the useful type of energy produced in an electric toothbrush.
If input energy is equal to useful output energy. This means that the total amount of energy that is in an isolated system (such as an engine or a generator) remains constant (conserved) over time.
However, the total amount of useful energy output of an isolated system is never equal to the total energy input.
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A horticulturalist wants to produce geraniums with specific characteristics.
She knows that the trait of red flowers is governed by the allele R (RR and Rr) and the trait of white flowers is governed by the allele r(rr).
The horticulturalist crosses two geraniums from the F1 generation.
Look at the Punnett square to see this cross.
R r
R RR Rr
r Rr rr
Which ratio of red-to-white flowering plants would she expect to see in the phenotypes of the F2 generation?
all red
3 red : 1 white
1 red : 3 white
2 red : 2 white
Yo,
In Geranium plant life red vegetation is given by using the allele R this is dominant (so RR or Rr ) genotype will produce crimson plant life.
If we communicate approximately the connected punnet square which i took from the workout e book, you could see that there was a cross made among vegetation with heterozygous genotype for red flora.
P1: Rr X Rr
Gametes: R: r : R : r
F1: RR: Rr: Rr: rr
so there is three: 1 in F1 offspring for red to white plant life.
Now the query is set f2 technology, while we cross F1 generation suppose we do a move of Rr and rr from F1 generations allow us to see what takes place.
F1: Rr: rr
Gametes: R: r: r: R
F2 : Rr : rr: Rr: rr
Rr: purple flowers
rr: White flora:
So the ratio in F2 era might be 2 crimson : 2 white. Please see connected punnet squares (first one for query) and the second of F1 move for better know-how.
I'm hoping that this will benefit you, so from my assumption and study it'd be 2 crimson : 2 white, if this is indeed the one i'm thinking of since nothing else was provided, if not please correct me.
Answer: 2 red : 2 white
Explanation:
I know
a bond in which only one pair of
electrons is shared?
Answer:
A single covalent bond
Explanation:
A single covalent bond is when only one pair of electrons is shared between atoms. A sigma bond is the strongest type of covalent bond, in which the atomic orbitals directly overlap between the nuclei of two atoms.
Answer:
Single covalent bond.
Explanation:
Single covalent bond is the type of bond in which only one pair of electrons is shared between atoms.
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
Help this is due today!!!
Answer:
a) Fe
b) Fe
c) Fe
Explanation:
When using their stoichiometric ratios, in all of the the iron will run out before the oxygen, making the iron the limiting reactant.
How many grams are in 3.4 moles of Lead (IV) Sulfate (Pb(SO4)2)? ) Molar mass: 303.26 g/mol 131.0840
Answer:
1031.084g
Explanation:
n=m/M
m=n(M)
m = (3.4mol)(303.26g/mol)
1031.084g
Hope that helps
Answer:
1031.08
Explanation:
You start with 3.4 moles and you know that 6.022 x 10 ^ 23 = 1 mole( Avogadro's Number), so you just multiply those 2 numbers and the moles will cancel leaving you with grams of Lead Sulfate.
The electron configuration of a cation with a 2+ charge is shown below.
1s22s22p63s23p6
What is the electron configuration for the ion's neutral parent atom? The atom is a main group
element. Name the group that the parent atom likely belongs to on the Periodic Table and identify
one chemical property of the parent atom.
The electron configuration for the ion's neutral parent atom is
1s²2s²2p⁶3s²3p⁶4s²
It belongs to group 2 on the periodic table and one of its chemical properties is, it has a density of 1.54 g/cm³
From the question,
The cation has a charge of 2+. This means the neutral atom lost 2 electrons.
From the given electron configuration, the cation has 18 electrons.
Therefore, the neutral atom of ion will have 20 electrons.
∴ The electron configuration for the ion's neutral parent atom is
1s²2s²2p⁶3s²3p⁶4s²
The atom belongs to group 2 on the periodic table.
One chemical property of the parent atom
Its density is 1.54 g/cm³
Hence, The electron configuration for the ion's neutral parent atom is
1s²2s²2p⁶3s²3p⁶4s²
It belongs to group 2 on the periodic table and one of its chemical properties is, it has a density of 1.54 g/cm³
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Calculate the number of moles in 1.622 grams of boron.
Answer:
0.147
Explanation:
Moles equals mass over AR/MR so 1.662 over 11 gives 0.147
Pls help I will give u points pls
Answer:
i think D
Explanation:
How do you balance C4H10 + Cl2 + O2 —> CO2 + CCl4 + H2O?
Answer:
4C4HO + 4Cl2 + 13O2 → 14CO2 + 2CCl4 + 2H2O
Explanation:
Balance The Equation: C4HO + Cl2 + O2 = CO2 + CCl4 + H2O
1. Label Each Compound With a Variable
aC4HO + bCl2 + cO2 = dCO2 + fCCl4 + gH2O
2. Create a System of Equations, One Per Element
C: 4a + 0b + 0c = 1d + 1f + 0g
H: 1a + 0b + 0c = 0d + 0f + 2g
O: 1a + 0b + 2c = 2d + 0f + 1g
Cl: 0a + 2b + 0c = 0d + 4f + 0g
3. Solve For All Variables
a = 4
b = 4
c = 13
d = 14
f = 2
g = 2
4. Substitute and Verify Result
4C4HO + 4Cl2 + 13O2 = 14CO2 + 2CCl4 + 2H2O
L R
C: 16 16 ✔️
H: 4 4 ✔️
O: 30 30 ✔️
Cl: 8 8 ✔️
hope this helps! :D
please help me on this question plizzźzz
what is the green colouring matter found in plants called
Answer:
the answer is chlorophyll....
Explanation:
if u need it's purpose just let me know
Explanation:
the green colouring matter found in plants is called chlorophyll.
how many neutrons of atomic mass is 31 and atomic number is 12
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As we know, Number of protons = Atomic Number
So,
Number of protons = 12And, Atomic mass = Number of protons + Number of Neutrons (N)
therefore ~
31 = 12 + N N = 31 - 12 N = 19Number of Neutrons = 19
Use the pictures below to answer these questions: How does Magnesium become an ion? What is the charge of the Magnesium ion?
Answer:
Explanation:
The bottom picture shows a Mg atom. There are two electrons on the outside ring. When Mg reacts with something, these 2 electrons are given away. The top picture records that fact.
The angle formed by the nuclei of two surrounding atoms with the nucleus of the central atom in a structure is called a(n) ________angle. The value predicted for such an angle using the VSEPR theory would be 180 degrees, based upon geometry alone. This is referred to as the___________ bond angle. In practice, this value often deviates from the predicted value for various reasons.
The bond angle obtained based on the geometry of the molecule alone is known as the predicted bond angle.
When a compound is formed, the less electronegative atom in the compound is called the central atom in the molecule. The angle formed by the nuclei of two surrounding atoms with the nucleus of the central atom in a structure is called a bond angle.
The bond angle is usually based on the geometry of the molecule. The expected geometry can be deviated for certain reasons such as the presence of lone pairs on the central atom in the molecule. The bond angle obtained based on the geometry of the molecule alone is known as the predicted bond angle.
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