Answer:
I think chemical Weathering
Answer:
Deposition is the answer
Explanation:
chemical formula of magnesium
oxide using Criss cross method
Answer:
Crisscross method is simply writing the charges crossly near each element. Since oxidation number of Mg (metal) is +2 and oxygen (nonmetal) is -2, if we cross them and write next to each; we get Mg2O2 .
A student spends 4.5 hours studying for a test. How much time is this equivalent to in seconds?
Select one:
a. 2,700 seconds
b. 16,200 seconds
c. 270 seconds
d. 6,480 seconds
Answer:
B. 16,200
Explanation:
1) Reduce.
4.5 hours can be translated to minutes. We know there are 60 minutes in an hour.
4.5 * 60 = 270 minutes
2) Reduce further
270 minutes can then be translated to seconds using the same equation
270 * 60 = 16,200
The table shows data for two groups of plants one grown with fertilizer and the other without fetalizer was the mean height of the plant given fertilizer
Answer:
What is the question?
Explanation:
2H2O2
1. Number of hydrogen atoms in chemical formula 1.
Answer:
А There are two peroxide molecules on the reactant side.
The statement is correct because the left hand side is the reactant side. We can read the reaction as;
2 molecules of hydrogen peroxide decomposed to given 1 molecule of oxygen gas and 2 molecules of water .
D Mass must be conserved so there are an equal number of molecules in the reactants and products.
E Mass must be conserved so there are an equal number of atoms in the reactants and products.
Since the chemical equation is balanced, choices D and E are correct. The reaction will have equal number of molecules and atoms on both sides of the expression.
Explanation:
Which has more energy, 5 kilograms of dynamite or 10 kilograms of dynamite? Why?
Answer: The main purpose of any warhead is to inflict damage on the target. The way the damage is caused may vary with different types of warheads, but in the most general sense, damage is caused by the transfer of energy from the warhead to the target. The energy is typically mechanical in nature and takes the form of a shock wave or the kinetic energy of fragments. In either case, a large amount of energy must be released. For many warheads that energy is stored in the form of chemical explosives.
Explosive Reactions
There are many chemical reactions that will release energy. These are known as exothermic reactions. If the reaction proceeds slowly, the released energy will be dissipated and there will be few noticeable effects other than an increase in temperature. On the other hand, if the reaction proceeds very rapidly, then the energy will not be dissipated. Thus, a great quantity of energy can be deposited into a relatively small volume, then manifest itself by a rapid expansion of hot gases, which in turn can create a shock wave or propel fragments outwards at high speed. Chemical explosions may be distinguished from other exothermic reactions by the extreme rapidity of their reactions. In addition to the violent release of energy, chemical explosions must provide a means to transfer the energy into mechanical work. This is accomplished by expanding product gases from the reaction. If no gases are produced, then the energy will remain in the products as heat.
Most chemical explosions involve a limited set of simple reactions, all of which involve oxidation (reaction with oxygen). A relatively easy way to balance chemical explosive equations is to assume that the following partial reactions take place to their maximum extent (meaning one of the reactants is totally consumed) and in order of precedence:
Explanation:
Answer:
10 kilograms of dynamite
Explanation:
The more volume an object has the more potential energy is available if it is the same material. 10 kilograms is larger than 5 kilograms.
Which of the following best describes the velocity of an object?
A B0 m/s
B 30 m east
C 30 m/s east
D 30 m/s2
Answer:
[tex]\boxed {\boxed {\sf C. \ 30 \ m/s \ east}}[/tex]
Explanation:
Velocity is the vector measurement of the change in position over time. A vector measurement means the answer must include a magnitude (numerical value) and a direction.
Here are some units of velocity:
m/s (meters per second) kph (kilometers per hour) km/s (kilometers per second)There are many other units, but m/s is the most common.
We can eliminate choice B and D, because the units (meters-m and meters per second squared-m/s²) are not for velocity.
We are left with choice A (30 m/s) and C (30 m/s east). Remember, velocity needs a number and a direction. C contains the direction east, so it must be the correct answer.
what is the octet rule?
Answer:
the octet rule is a chemical rule of thumb that reflects the observation that main group elements and bonds and such a way that each has a electrons in its valence shell giving the same electronic configuration as noble gas
Do the earth plates ride on the crust or mantle?
Answer:
Mantle
Explanation:
The crust is also known as earths tectonic plates
HELP! ASAP
WILL MARK DOWN BRAINLIEST
Answer:
SO 4. IS he has small dicke
:D happy to help
Explanation:
PLEASE ANSWER CORRECTLY !!!!!!!!!!!!!! WILL MARK BRAINLIEST !!!!!!!!!!!!!!
Answer:
the ice has reached its melting point
the water has reached its freezing point
the whatever that is has reached its cooling point I guess
Answer:A chemical reaction?
Explanation:let me be
Agl + Na25 yields Ag2S + Nal
Explanation:
Agl+hih+356bnh$&56DG hug zero cg hydh hod sir un bucks
What is the frequency of a light wave who has a wavelength of 5.5 x 10-14 m v
Answer:5.45×10^21
Explanation:
Use:f=c/λ
AlBr3 can be used as a catalyst in the Friedel-Crafts alkylation reaction. The correct name for the compound represented by the formula AlBr3 is
The question is incomplete, the complete question is;
AlBr3 can be used as a catalyst in the Friedel-Crafts alkylation reaction. The correct name for the compound represented by the formula AlBr3 is —
aluminum bromide
monoaluminum tribromide
aluminide bromine
aluminum tribromide
Answer:
aluminum bromide
Explanation:
Having known that AlBr3 is an ionic compound and aluminium is the central atom here, we now have to ask ourselves if Aluminium exists in other stable oxidation states.
We must take cognizance of the fact that the oxidation number of the central atom in a compound becomes part of the name of that compound when other stable oxidation states for atoms of the same elements exists.
Since the +3 state is the only stable oxidation state for aluminium, the name of the compound is simply aluminium bromide.
The oxidation # (charge) of an element called "lindenium "Ld is + 1 and the oxidation # (charge) of an element called "mendezine symbol "Mz, is -2. What is the chemical formula for the compound called lindenium mendezide?
Answer:
Ld₂Mz
General Formulas and Concepts:
Chemistry - Compounds
Valence shellsWriting chemical compoundsBalancing chargesExplanation:
Step 1: Define
"Lindenium" Ld w/ oxidation charge of +1
"Mendezine" Mz w/ oxidation charge of -2
Step 2: Write Compound
To balance out the charges to be neutral (0), we must counter balance the amount of Ld's with Mz's. We need 2 Ld's with 1 Mz to create a compound with a neutral charge:
2Ld¹⁺ + Mz²⁻
2(+1) + (-2) = (+2) + (-2) = 0 (neutral charge)
Therefore, our compound must be Ld₂Mz.
8. Draw the structural formula for isoprene (the building block of rubber). It should satisfy the molecular formula for isoprene of C5H8.
plz i need help
Here are two options use the one you need :)
A heat energy of 645 J is applied to a sample of glass with a mass of 28.4 g. Its temperature increases from –11.6 °C to 15.5 °C. Calculate the specific heat of glass.
Answer:838J/kg/K
Explanation:
use : Q= mS◇ T
The transfer of energy in the form of invisible waves is
Answer:
Radiation
Explanation:
___SeCl6+ ____ O2——> ___ seO2 +___Cl2
If you can do this I need help with more
Answer:
SeCl6 + O2——> seO2 + 3Cl2
Do electrons have psrticle nature or wave nature?
Explanation:
they have wave nature
its correct answer
manganese atom has 30 neutrons and atomic number 25
determine the electron cloud charge of manganese
Answer:
the most common oxidation no.of manganese is +2 +3 +4 +6 +7
Electron geometry of the central atom br in brf4+
Answer:
Octahedral
Explanation:
Recall that according to Valence Shell Electron Pair Repulsion Theory(VSEPR) the shape of a molecule is based on the number of electron pairs on the outermost shell of its central atom.
In BrF4^-, the bromine atom is surrounded by 6 electron pairs. Four bond pairs and two lone pairs. This means a total of six regions of electron density.
According to VSEPR Theory, BrF4^- has an octahedral electron geometry and its the molecular geometry will be square planar since it is of the type AX4E2.
An image of the BrF4^- is attached below.
A layer of sandstone is found on top of a layer of shale
Answer: Yes it is
Explanation:
What type of boundary exists along the coast of California?
Answer:
I exist ;-;
Explanation:
pls help question 2 ill attach a picture
Answer:
X 154
Check solution in explanation
Explanation:
Average atomic mass = ( mass 1× abudance) + ( mass 2× abudance)+ ( mass 3× abudance) / 100
(149×13.8)+(152×44.9) +(154×41.3)/100
2056.2 + 6824.8 + 6360.2/100
=152.412
Daniel and Sanya are scientists. Daniel is studying whether the increasing frequency of tropical storms is affecting coastal erosion. Sanya is investigating whether the discharge from industrial plants has any impact on the pH concentration of freshwater swamps in the surrounding area. Which fields of science are Daniel's and Sanya's studies most closely related to?
Daniel's field of study is related to [biological, earth and space,or physical] science, and Sanya's field of study is related to [biology, chemistry, or physics].
Answer:
- Daniel- Earth and Space
- Sanya- Chemistry
Explanation:
Daniel's study field is associated with the 'Earth and Space' as he is attempting to explore how the frequency of tropical storms(in the atmosphere) and coastal erosion(relation with land and ocean) are interconnected to each other. He studies how the two are associated and affect life on the planet.
While Sanya's field of study would be 'Chemistry' as she aims to study the composition and constitution of substances and the changes that they undergo as a consequence of alterations in the constitution of their molecules('whether the discharge from industrial plants has any impact on the pH concentration of freshwater swamps in the surrounding area').
An atom of hydrogen loses its electron. What is its charge
Answer:
When an atom of hydrogen loses its electron it becomes positively charged.
Hope it will help you........Final Answer: +1
Explanation/Reasoning:
Because hydrogen is an atom (not an ion), you'll write it as H (not H+). Hydrogen (H) has one proton and one electron, so if it loses its electron, it will only have one proton. Therefore, it becomes an ion of H+. This means that the charge will be +1.
~I hope I helped you :)~
What is the similarity between teeth and eggshells?
*. Please answer
Answer: Eggshells have a similar chemical composition to our tooth enamel, making them react similarly with other chemicals. This can help us understand what stains tooth enamel. When we brush an eggshell with fluoridated toothpaste, it strengthens the shell and protects it from acid, just like it does for our tooth enamel
Explanation:
Answer: Eggshells have a similar chemical composition to our tooth enamel, making them react similarly with other chemicals. This can help us understand what stains tooth enamel. When we brush an eggshell with fluoridated toothpaste, it strengthens the shell and protects it from acid, just like it does for our tooth enamel.
what does Hess’s law state?
Answer:
C. The enthalpy of a reaction is the sum of the enthalpies of intermediate reactions.
Explanation:
The heat of any reaction ΔH∘f for a specific reaction is equal to the sum of the heats of reaction for any set of reactions which in sum are equivalent to the overall reaction.
I was named after the man that developed the periodic table.
Einsteinium
Moscovium
Mendelevium
Lawrencium
Answer: Mendelevium
Explanation:
Which is the best example of forces acting in the same direction?