Answer:
answer this and ill answer that
Explanation:
during a heating or cooling process, how are changes in enthalpy and temperature related?
What is the chemical formula for nickel (III) oxide, I know the answer but can someone explain how you would get it?
Answer:
the answer is d.
1. Write the symbols for each element.
2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)
3. See if the charges are balanced (if they are you're done!)
- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.
if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide by Wayne Breslyn on YT.
Answer:
D.) Ni2O3
Explanation:
edge 2021 (just needed the daily answer)
What is the process where plants make seeds that grow into new plants
Answer:
Plant fertilization
Explanation:
Hope this helps:) Have a great day
Please give Brainliest if could
A CANDLE WILL STAY LIT INSIDE THE SPACE SHUTTLE WHEN IT IS ON THE LAUNCH PAD, BUT NOT WHEN IT IS IN ORBIT. WHY?
Answer:
because there is no oxygen in space for it to burn
because all fire need oxygen to burn
Explanation:
One day on her walk home from school, Leann noticed some rust on an old car.
She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below?
4 Fe + 3O2 → 2Fe2O3
Answer:
Iron and Oxygen
Explanation:
Fe is Iron and O2 is Oxygen
Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
“Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged and
that mass is conserved in the reaction.”
If anyone could maybe send me a drawing it’ll be so appreciated! God bless you all :)
Answer:
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
Explanation:
Be sure to label your model to clearly show how you are representing the atoms
In metallic bonds, electrons are referred to as electrons.
Answer:
Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.
List the producers in this food web
Answer:
Tree and Grass?
Explanation:
hope it helps pleass mark me as brainliest answer
I NEED HELP HERE PLEASE !!!
A gas has a volume of 4 liters at 3 atm. To expand the volume to 7000 ml, what the new pressure
(in atm) have to be?
Answer:
Gas it too expensive I need to get a job. I have no money to use at the atm
Explanation:
if your car is on 7000 ml it has issues and you need to take it to a mechanic.
(c) Magnesium has atomic number 12.
Magnesium exists as magnesium-24, magnesium-25 and magnesium-26 atoms.
Explain, in terms of protons and neutrons, why these atoms are isotopes
of magnesium
(2)
PLEASE HELP URGENT
Answer: The magnesium 24, 25, and 26 atoms are isotopes because they all have the same number of protons but they have different mass numbers
Explanation: isotopes of an element have the same number of protons but different mass number. So for magnesium 24, the number of protons is 12 and the number of neutrons is 12.
For magnesium 25, the number of protons would still be 12 but the neutrons would be 13.
Magnesium 26, the number of protons would be 12 and neutrons number is 14
What volume, in liters, does 128 grams of O2 occupy at STP?
89.6 L
22.4 L
67.2 L
44.8 L
Answer: 89.7 L
Explanation:
89.6 volume, in liters, does 128 grams of O2 occupy at STP. Therefore, option A is correct.
What do you mean by volume ?A volume is simply the amount of space taken up by any three-dimensional solid. A cube, a cuboid, a cone, a cylinder, or a sphere are examples of solids. Volumes differ depending on the shape.
Every three-dimensional object requires some amount of space. The volume of this space is measured. Volume is defined as the space occupied by an object within the boundaries of three-dimensional space. It is also known as the object's capacity.
1 mole Oxygen has mass 32 grams
Mole of Oxygen in 128 g mass = 128 g / 32 g/mol
= 4.0 mol O2
At Standard temperature and pressure this has volume
= 4.0 mol × 22.4 L/mol
= 89.6 L
Thus, 89.6 volume, in liters, does 128 grams of O2 occupy at STP, option A is correct.
To learn more about the volume, follow the link;
https://brainly.com/question/1578538
#SPJ6
_______ mL = 500 cm^3
Answer:
500 mL
Explanation:
500 cm is equal to 500 mL
HELP !!!!!!!!!!!!! PLEEEAAAAASSSSSSEEEE
2) Check all that apply.
What are the three major groups of elements?
Answer:
metals, nonmetals and metalloids
Explanation:
During spontaneous fission, a nucleus of 25498Cf can produce 11846Pd, four neutrons, and what other nuclide?
Answer: 52Te - Tellurium
Explanation: Radioactivity occurs when an unstable nucleus of an element decompose into a stable element by emitting particles or forms of eletromagnetic energy. There are types of radioactivity and Spontaneous Fission is one of them.
In Spontaneous Fission, the unstable, also called parent, nucleus splits into two smaller nuclei and emitts one or more neutrons.
The reaction spontaneous fission of Cf is represented below.
25498Cf ⇒ 11846Pd + 4n + X
The characteristics of each element of the equation are:
1) The element Cf has atomic mass 254 and atomic number 98.
2) Element Pd has atomic mass 118 and atomic number 46.
3) Neutron is represented as n, has no atomic number and atomic mass 1.
Given these properties, to determine the other nuclide, we have to find out the nuclide's atomic number, as each element in the periodic table has its own atomic number.
At the left side of the equation, atomic number is 98. At the right side, element X's atomic number is
98 - 46 + 0 = 52
In the periodic table, the element with atomic number 52 is Tellurium, whose symbol is Te.
The other nuclide for the spontaneous fission is Tellurium (Te).
1) how can you make a solution more concentrated
Explanation:
solvent bc when you remove it it becomes more concentrate
how does a drupe fruit differ from a hesperidum fruit.
Answer:
hi
Explanation:
Answer:
Fleshy Fruits: All of most of the ovary wall (pericarp) is soft or fleshy at maturity. ... partitions, juicy seed vesicles, and a leathery exocarp similar to a hesperidium. ... This is a very common dry fruit found in many different plant families.
Explanation:
For the formation of hydrogen iodide, H2(g) + 12(g) - 2HI(g) the value of the
equilibrium constant at 700K is 54.7. If one mole of H2 and one mole of 12 are the
only materials initially present, what will be the equilibrium concentrations of H2,
12, and HI.
Answer:
t 700 K, the equilibrium constant for the reaction;
H
2(g)
+I
2(g)
⇌2HI
(g)
is 54.8.
If 0.5 mol litre
−1
of HI
(g)
is present at equilibrium at 700 K, what are the concentrations of H
2(g)
and I
2(g)
assuming that we initially started with HI
(g)
and allowed it to reach equilibrium at 700 K.
the structure and bonding of gold?
Answer:
metallic bonding
Explanation:
since it is a metal gold forms metalllic bonding.
Answer:
metalic bonding
Explanation:
Please answer correctly nobody answers questions like this on brainly. BTW ITS STEM.
Which of the following choices describes an accurate relationship?
Descriptive research typically follows from explanatory research
Experimental research may lead to understanding descriptive research
Case study research typically follows from descriptive research
Observational research may lead to understanding explanatory research
Answer:
I believe your answer is B. Experimental research may lead to understanding descriptive research.
Generally, experimental research is a trial and error method that tests the hypothesis of descriptive research. Descriptive research being the theoretical or studied characters of a topic.
Please let me know if I had this wrong, and I'll do some extra research for you.
This question is about energy transfers. Which is the correct definition of conduction.'
(1 Point)
Transfer of thermal energy when particles in a heated fluid rise.
Transfer of thermal energy as a wave.
Transfer of thermal energy by the vibration of particles.
2. Stronger intermolecular forces =______ boiling point
Stronger intermolecular forces = higher boiling point
The stronger the intermolecular forces, the harder the molecules are to pull/break apart, which means a higher boiling point.
What is the mass of 1.9 x 10^22 molecules of CaCO3?
3.2 g CaCO₃
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.9 × 10²² molecules CaCO₃
Step 2: Identify Conversions
Avogadro's Number
[PT] Molar Mass of Ca - 40.08 g/mol
[PT] Molar Mass of C - 12.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide: [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
3.15794 g CaCO₃ ≈ 3.2 g CaCO₃
help please.
4. Two unknown elements react to a form a single compound. Element 1 is shiny, malleable, and conductive. Element 2 is a non-conductive gas. When they react, what would you expect to be true about the compound produced? (AKS 2a DOK 3)
a.The compound will probably have properties of both elements like a metalloid.
b.The compound will probably have high boiling points and melting points and will be conductive in solution.
c.The compound will probably have low boiling and melting points and will not be conductive in solution.
d.The compound will probably have high boiling and melting points and will not be
Answer:
this is my old account and these still dont have answers
Explanation:
Identify the type of reaction
CaCl2 + AgNO3 --> AgCl + Ca(NO3)2
Answer:
It is Double Replacment
Explanation:
They traded bonds.
Balanced Equation is 2AgNO3 + CaCl2 = 2 AgCl +1Ca(NO3)2
As one object gets closer to another object , the force of gravity will increase ......
True or false
Answer:
true
Explanation:
hope that helped!!
What is the formula for nickel || dichromate
Answer: Cr2NiO7 is the molecular formula for nickel II dichromate.
The following diagram shows a view of earth . What do the arrows represent
Answer:
how the earth rotates
Explanation:
Answer:
The Diagram shows Earth's rotation! ^^
Explanation:
Orbit and revolution is when the Earth goes around the sun and I'm sure it's not seasons because seasons isn't a movement of Earth.
llodine solution is added to a sample taken from the boiling tube after 10 minutes and
60 minutes.
Suggest what you would see in these samples.
03
Answer:
I have no idea sorry but if you payed attention to what they are telling you you won't half to cheat
what form of matter has a definite shape and takes up space?
Answer:
If something is in a solid state of matter, it has a definite shape and volume. The volume of an object is the amount of space it occupies. A block of wood placed on a table retains its shape and volume, therefore, it is an example of a solid. If a liquid is poured on that same table, there are very different results
Explanation:
Hello
Answer:
The reliable and correct answer to this question is Solid
Explanation: If something is in a solid state of matter, it has a definite shape and volume. The volume of an object is the amount of space it occupies. A block of wood placed on a table retains its shape and volume, therefore, it is an example of a solid.
A wavelength with a frequency of 14 HZ has a wavelength of 3 meters at what speed will this wave travel
Answer:
The speed will be 42 m/s
Explanation:
Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.
Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).
The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.
In this case:
f= 14 Hzλ= 3 mReplacing:
v= 14 Hz* 3 m
Solving:
v= 42 m/s
The speed will be 42 m/s
