Answer:
3 ÷1,800
= 600 N
Thus the force needed is 600N
What can you infer is causing the cryosphere to change? Give two reasons. Explain why.
Answer:The crayosphere- it is the portion of the Earth's surface where water is in solid form for at least one month of the year..-has been shrinking in response to climate warming.The important outcome,however,is the change and the response the human social system (infrastructure,food ,water,recreation) will be have to that change...
I hope It helps
Answer:
50
Explanation:
mookie betts 50 is goated no cap
If the empirical formula of a compound is CH2O what is a possible molecular formula for
the compound?
A C2H4O2
B CH20
C C5H705
D CH40
(03.03 LC)
Which of the following describes a covalent bond?
Answer:
It is the sharing of electrons between atoms with an electronegativity difference below 1.7.
Explanation: Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond.
Answer: Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
Explanation: A covalent bond forms when the bonded atoms have a lower total energy than that of widely separated atoms.
Which statements are correct about a flowering plant? It may have both male and female flowers. It may have only male or female flowers. It may have both male and female parts in the flower. It must have both male and female parts in the flower.
Answer: the last one, It must have both male and female parts in the flower.
Explanation:
HELP ASAP PLEASE!!!!
Answer:
solid objects
cooler to warmer
sitting on a metal chair.
Explanation:
im correcr
Write the correct formula for the following compounds.
1. One ingredient in organic fertilizer contains an equal number of sodium and nitrogen atoms and three times as many oxygen atoms as nitrogen
atoms.
2. A major component of rocket fuel is hydrazine, a compound which contains two nitrogen atoms and twice as many of hydrogen atoms.
3. One of the gases responsible for acid rain contains sulphur atom for every three atoms of oxygen.
4. This compound contains one Lithium atom for every three atoms of Bromine.
5. Butane is a compound that is used as fuel in lighters and camp burners. It contains four carbon atoms and ten hydrogen atoms.
Answer:
79
Explanation:
Please help me
How many hydrogen(H) atoms are in 3(NH₄)₂Cr₂O₇
And How many Nitrogen(N) atoms are in 3(NH₄)₂Cr₂O₇
Answer:
24 H
6 N
Explanation:
3 × (4 × 2) = 24 H
3 × 2 = 6 N
Where does nearly all life get its energy from? *
Oxygen
A.Sun
B.Produce
C.Soil
Which group of elements can act as semiconductors?
Answer:
metalloids
Explanation:
I think that is the answer
According to the electronic configuration, group 14 of elements can act as semiconductors.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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A exothermic reaction requires energy, produces energy, is energy-neutral.
Answer:
An exothermic reaction is going to produce energy.
Explanation:
rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.
2. Many calculations in chemistry will involve certain symbols, such as the symbol triangle or delta
What does this symbol stand for or mean?
A. "The total"
B. "The change in"
C. "The unit"
D. "The formula"
B. "The change in"
I saw that symbol a lot in chemistry and physics so I immediately recognized it.
define the term valency
Answer:
Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
What hold elements together to form compounds
Answer:
Chemical bonds are forces that hold elements together. it can be either covalent or ionic bonds that are these chemical bonds.
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
How many moles in 5.125g of NaCl? In equation form!
Plzzzz! HELP ME!
Answer:
0.088mole
Explanation:
Given parameters:
Mass of the compound = 5.125g
Unknown:
Number of moles = ?
Solution:
To solve this problem, we need first find the molar mass of the given compound.
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
So;
Number of moles = [tex]\frac{mass}{molar mass}[/tex] = [tex]\frac{5.125}{58.5}[/tex] = 0.088mole
what is the phenotype for the genotyep WW ?? I NEED HELP ASAP HELPP MEEEEE
Answer:
The genotype for the pink flower is RW, and the genotype for the white flower is WW. This would lead to a 50 percent chance of the offspring having a phenotype of pink
Explanation:
What two things will you consistently do to maintain your mental health?
Answer:
Eat healthy food and exercise daily also undertake good healthcare
There are some special exercises that help to increase brain strength you can do them
Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answer:
chemical weathering
Explanation:
Chemical weathering is the process responsible for changing the composition of rocks.
WHAT IS WEATHERING?Weathering is the process by which rocks are broken down into smaller or tiny pieces.
There are different types of weathering namely;
Chemical weatheringMechanical weatheringChemical weathering is the type of weathering that changes the chemical composition of rocks.
Learn more about chemical weathering at: https://brainly.com/question/14426457
Dwarf planets are smaller than planets. What is another way that dwarf planets are different?
A. They are not spherical.
B. They do not orbit the sun.
C. They have large objects in their orbit.
D. They move more slowly along their orbits.
Answer:
number C
Explanation:
**PLEASE HELP** If you were presented with a preserved brain specimen, but weren’t told whether it was from a human or a sheep, how would you determine which animal it was from? Describe at least three differences you would use to help determine your answer.
Answer:
size-humans brains are usually larger than animals, shape-some animal brains are shaped very odd, and the cerebrum-that is the part of the brain that makes us human.
The three difference between animal brain and human brain will be state out on the basis of size, shape and number of folds.
What is brain?Brain is the main central part of the nervous system of all organism present in the earth.
Three differences between the structure of human brain and animal brain.
Size of the human brain is generally larger than the animal brain.Shape of the brains for humans and animals are different as they both have differnt folds in that.Cerebrum is present only in mammals, so that some animals will not have cerebrum.Hence three differences between human and animal brains are listed above.
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if you have 12g of compound A2B3 (159.7g/mol), how many moles do you have?
Answer:
0.075 moles n=m/M so divide the mass (m) by the molar mass (M) to get the n which is the number of moles
Explanation:
Using the same sample of gas (P = 475 torr , T = 21 °C ), we wish to change the pressure
to 4750 torr with no accompanying change in volume or amount of gas. What temperature T2 in
Celsius, is needed to reach this pressure?
Answer:
210°C
Explanation:
using the equation
P1/T1=P2/T2
475/21=4750/T2
T2= (21×4750)/475
T= 210°C
Does the atomic number of an element equal the number of neutrons in an atom of that element?
Answer:
no
Explanation:
the atomic number the just the number below the symbol of the element as well as proton number or electron number, however if u want to work out the neutron number you have do mass number (which is on the top of the symbol) substact atomic number/proton number
I need help on thiss
The reaction is not balanced
Further explanationGiven
Reaction
2Fe(s)+3O₂(g)⇒2Fe₂O₃(s)
Required
The number of atoms
Solution
In a balanced chemical equation, the number of atoms in the compound that reacts (the reactants and products) will have the same number
Reactants : Fe(s)+O₂(g)
Fe = 2 atoms
O = 3 x 2 = 6 atoms
Products : Fe₂O₃(s)
Fe = 2 x 2 = 4 atoms
O = 2 x 3 = 6 atoms
The reaction is not balanced because the number of Fe atoms is not the same
The balanced reaction should be:
4Fe(s)+3O₂(g)⇒2Fe₂O₃(s)
Please help urgent Balance the following word equation:
Aluminum chloride +
Sodium -->
Aluminum +
Sodium Chloride
Coefficents must stay in the order shown above.
Answer:
AlCl3 + 3Na > Al + 3NaCl
Explanation:
AlCl3+Na → Al + NaCl
Al =1 Al=1
Cl =3 Cl = 1
Na=1. Na = 1
so balance
and it would be
Alcl3 + 3Na → Al + 3NaCl
What does a low number on the pH scale say about a solution? O A. The solution is changing, OB. The solution is an acid. O C. The solution is neutral. O D. The solution is a base,
Answer: B) The solution is an acid.
Explanation:
Answer:
B
Explanation:
why does aluminium form at negative electrode during electrolysis
Answer:
The negative electrodes (cathodes ) and the positive electrodes (anodes ) are made of graphite, a form of carbon. During electrolysis: positively charged aluminium ions gain electrons from the cathode, and form molten aluminium. oxide ions lose electrons at the anode, and form oxygen molecules.
Materials that allow electricity to flow through them easily are called conductors which of these would be a good conductor of electricity?
Group of answer choices
Carbon
Steel
Rubber
Plastic
Which one of these best describes an adaptation?
Answer:
c
Explanation:
Answer:
C
Explanation:
If not C it is D
N2+3H2=>>2NH3. If 6.72dm³ of each of Nitrogen and hydrogen (measured at S.T.P.) are made to produced Ammonium. Which of the reacted will be in excess and by how many moles?
Answer:
Hydrogen, 0,2 mol
Explanation:
[tex]V_{M}[/tex] = 22, 4 l/mol
V ([tex]N_{2}[/tex]) = 6,72 [tex]dm^{2}[/tex] = 6,72 l
V ([tex]H_{2}[/tex]) = 6,72 [tex]dm^{2}[/tex] = 6,72 l
The formula is:
n = [tex]\frac{V}{V_{M} }[/tex]
n ([tex]N_{2}[/tex]) = 6,72l /22,4 l/mol = 0,3 mol
n ([tex]H_{2}[/tex]) = 6,72l /22,4 l/mol = 0,3 mol (the same)
But from the equation we get a proportion that 1 mol ([tex]N_{2}[/tex]) - 3 mol ([tex]H_{2}[/tex])
[tex]\frac{0,3}{1} > \frac{0,3}{3}[/tex] (we have more hydrogen than is need for the reaction)
So there is excess of [tex]H_{2}[/tex]
We only need [tex]\frac{0,3}{3}[/tex] = 0,1 mol ([tex]H_{2}[/tex])
0,3 mol (hydrogen quantity we have) - 0,1 mol (hydrogen quantity we need for the reaction) = 0,2 mol (excess)
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