Answer:
picture pls
Explanation:
pls help my test is tomorrow
2Na + Cl(small 2) = 2NaCl
describe the reaction of sodium in terms of the names the substances and the number of atoms involved
which elements from the periodic table are the least reactive
Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.
Group 18; The Noble Gases contains the elements on the periodic table that would be the least reactive out of all the elements. So, this include any gas element, such as helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og). Hence, if you have the options:
(The Option in Bold is Correct)
O the group with fluorine at the topO the group with carbon at the topO the group with helium at the topO the group with hydrogen at the top-----------------------------
Hope this helps!
-----------------------------
Why does scientists use atomic watch?
Answer:
atomic watch
Explanation:
it is used for the measurement of time.
HELP!!
Do you think the number of asteroid samples a pod is carrying could make a difference? Might that explain why the
same strength thruster force caused this pod to have a different change in velocity? Explain your ideas, even if you are
unsure
oncepts
4 List What are some of the physical properties
of stars?
Answer:
Brightness. Two characteristics define brightness: luminosity and magnitude. ...
Color. A star's color depends on its surface temperature. ...
Surface Temperature. ...
Size. ...
Mass.
Explanation:
there
Consider this reaction: 2H CO32- → H2O CO2. Identify each of the following as a product, a reactant, or a coefficient. CO32-: H2O: CO2: The 2 in front of H :.
Answer:
The 2 in front of the H is a coefficient.
H and (CO3)2 are reactants.
H2O and CO2 are products.
This reaction is an example of Combustion.
Answer:
CO32-: reactant
H2O: product
CO2: product
The 2 in front of H+: coefficient
Explanation:
This is the real answer, I got it right on edge or whoever you write it.
the heat energy absorbed or released during a chemical reaction is known as:
When the metal was added to the calorimeter, some of the water splashed out. How would the loss of water in the Styrofoam cup affect the final temperature
The final temperature of the cup may be less than accurate thereby affecting the entire results of the experiment carried out using the cup.
A styrofoam cup is an insulated material. A styrofoam cup prevents heat gain or looses from the cup. Heat is gained by the water inside the styrofoam cup. The cup prevents exchange of energy with the environment.
When water is lost from the styrofoam cup, the final temperature of the cup may be less than accurate thereby affecting the entire results of the experiment carried out using the cup.
Learn more: https://brainly.com/question/8646601
Elabore el balance de la ecuación por oxido reducción enumerando cada paso
CaC2O4 + KMnO4 + H2SO4 → CaSO4 + MnSO4 + K2SO4 + CO2 + H2O
Answer:
[tex]{ \rm{5CaC _{2}O _{4(aq)}+ 2KMnO _{4(aq)} + 8H _{2} SO _{4(aq)} → 5CaSO _{4(s)}+ 2Mn SO _{4(aq)}+ K _{2} SO _{4(s)} + 10CO _{2(g)} + 8H _{2} O _{l} }}[/tex]
Explanation:
This is a redox reaction formed by combining two half equations.
Check the image above, sorry if my handwriting is poor :(
In your own words, what is the conservation of mass?
Answer:
In chemistry, the law of conservation of mass states that the mass of the products (the chemical substances created by a chemical reaction) will always equal the mass of the reactants (the substances that make the chemical reaction). Think of it as being similar to balancing an algebraic equation.
Explanation:
(winks and runs off)
Answer:
Mass cannot be created or destroyed.
Explanation:
Conservation of mass is "a principle stating that mass cannot be created or destroyed" (Oxford Languages).
Have a nice day! (there is not much rewording/etc you can do here as it is a simple principle, but I hope this will still help!)
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Elige la respuesta que mejor describe cómo difieren el Monte Everest y el Valle de la Muerte.
El Monte Everest es plano y el Valle de la Muerte es el punto más alto de la Tierra.
O El Monte Everest es el punto más alto de la Tierra, y Death Valley es una montaña más pequeña.
El Monte Everest es el punto más alto de la Tierra, y el Valle de la Muerte es relativamente plano.
Answer:
El Monte Everest es el punto más alto de la Tierra, y el Valle de la Muerte es relativamente plano.
Explanation:
What is moisture in the atmosphere
Answer: MOISTURE IN THE ATMOSPHERE, in the form of water vapor, liquid water, and ice, controls most aspects of our weather and climate. ... Atmospheric moisture is expressed as clouds, precipitation, storms, weather fronts, and other phenomena.
what are the uses of the periodic table
Answer:
In today's world, the periodic table is very valuable for both students and scientists since it allows them to forecast the sorts of chemical reactions in which a specific element is likely to engage. Rather than memorizing facts and figures for each element, students and scientists can learn a great deal by simply looking at the table. They can learn about an element's reactivity, whether it is likely to conduct electricity, whether it is hard or soft, and many other characteristics by simply looking at the table.
Groups are made up of elements that are in the same column as one another and have attributes that are comparable to one another. If we look at the first column (the alkali metals), for example, we see that they are all metals that have a 1+ charge in reactions, react quickly with water and combine easily with nonmetals.
Periods are made up of elements that are arranged in a row next to one another and have the same maximum unexcited electron energy level as one another.
The periodic table also has the advantage of providing all the information you need to balance chemical processes at a glance, which is a very valuable feature. The atomic number and, in most cases, the atomic weight of each element are included in the table. The group of an element indicates the characteristic charge of that element.
Explanation:
Please count compound list each element and the amount of each and then figure out the total of the atoms
NEED ANSWER ASAP
Answer:
Look at the formula.
Explanation:
Carbon: 10
Hydrogen: 14
Nitrogen: 2
10 + 14 + 2 = 26
Organic, its nicotine
Pls help me!! Explain how the N:Z ratio can help predict the type of radiation Zr-85 and Zr-95 emit.
No links pls
Based on N:Z ratio, Zr-85 is expected to decay by positron emission. Zr-95 is expected to emit beta particles in a beta decay.
The N:Z ratio determines the stability of a nucleus. If a nucleus has N:Z ratio >1.5 or <1.0, such a nucleus is unstable and will undergo radioactive decay. The aim of such a decay is to attain a favorable N:Z ratio.
For Zr -85, the N:Z ratio is 1.1 while the N:Z ratio of Zr-95 is 1.4. Zr -85 is expected to decay by positron emission which increases the N:Z ratio. For Zr-95, the nucleus tends to undergo processes that decrease the N:Z ratio such as beta emission.
Learn more: https://brainly.com/question/2192784
Please help I’ll give brainlist who ever answers I just want the answer so please help!!
Answer:
{B}
Explanation:
What's a suitable assumption for a simple distillation lab?
Answer:
Must be stable and relatively insoluble in boiling water.
Explanation:
it must be stable and relatively insoluble in boiling water and a must-have vapor pressure in boiling water that is of the order atmosphere at or more compound satisfy these conditions that will generally not separate from each other but we'll be separated from everything else.
Which molecule has the same empirical formula as molecular formula?
A. CH3COOH
B. C2H5OH
C. C2H4
D. C4H10
and what is the working
the answer is C ( i think )
The correct statement which has the same empirical formula as molecular formula is "CH3COOH".
What is empirical formula?A chemical compound's empirical formula is a representation of the simplest whole number ratio between its constituent parts.
What is molecular formula?The molecular formula is a depiction of the compound's actual whole number ratio between its constituent parts.
To put it another way, molecular formulas tell you how many atoms of each element are in a compound, whereas empirical formulas tell you the simplest or most reduced ratio of components.
Acetic acid has the molecular chemical formula CH3COOH. In the order C: H: O, the true whole number ratio is 2: 4: 2. In the order C: H: O, the smallest simple whole number ratio is 1: 2: 1. As a result, acetic acid's empirical formula is CH2O.
Hence, the correct option is A.
To know more about empirical formula and molecular formula here
https://brainly.com/question/14425592
#SPJ2
A model for a potential chemical reaction is shown here. Evaluate the model and the reaction shown. Which statements are correct about this model. Select ALL that apply.
A) The law of conservation of matter is followed in this model.
B) Conversation of matter is not observed because of some of the atoms are converted into energy in the reaction.
C) Conservation of matter is observed because there are the same number of each atom on both sides of the reaction.
D) Conservation of matter is not observed because there are different numbers of molecules in the reactants and the products.
Answer: b/c
Explanation:
Please help! Its due now!
Answer:
PARTICLES!
I hope I was on time! Cheers! :^)
What is the type of potential energy that develops as the object changes shape
Answer:
The answer is Elastic Potential Energy
2. What physical force causes suspensions to settle
Hello!
Answer:
Gravity
Explanation:
It can settle down and separate over time due to gravity.
Hope this helps! Have a great day!
Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help Help
What do you put in the cavity of an unstuffed turkey?
Which two statements are true for both compounds and mixtures?
A. They are made up of more than one type of atom.
B. Their particles all have the same chemical formula.
O C. They can be separated into two or more elements.
D. Their particles are held together by chemical bonds.
Answer:
B and C is your best option
BRAINLIST ???
What is a material through which waves travel?
space
vibrations
motion
medium
how many grams of lead (ii) iodide will be precipitated by adding sufficient Pb(NO3)2 to trace with 630mL of 0.268M Ki solution?
2KI(aq)+Pb(NO3)2(aq) → PbI2+2KNO3(aq)
The mass of PbI2 produced from a trace amount of 630mL of 0.268M KI solution is 39.2 g.
The equation of the reaction is; 2KI(aq)+Pb(NO3)2(aq) → PbI2(s) + 2KNO3(aq)
From the question, number of moles of KI = 630/1000 L × 0.268M = 0.169 moles
Now;
2 moles of KI is required to precipitate 1 mole of PbI2
0.169 moles of KI is required to precipitate 0.169 moles × 1 mole/2 moles
= 0.085 moles
Mass of PbI2 = Number of moles of PbI2 × Molar mass
Mass of PbI2 = 0.085 moles × 461.01 g/mol
Mass of PbI2 = 39.2 g
Learn more: https://brainly.com/question/6284546
can someone help me please
so basically i have to match the vocabulary terms with their definitions
Explanation:
Electrical energy: Kinetic energy caused by moving electrons
Example of energy: lighting
Chemical energy: Energy stored in matter
Example of energy: natural gas
Light energy: a kind of kinetic energy that moves in waves and can be seen
Example of energy: stars
Mechanical energy: Is the sum of an object's kinetic energy and potential energy
Example of energy: dart guns
Answer: Q1.) electrical enegry
Q2.) light energy
Q3.) chemical energy
Q4.) mechanical energy
Explanation:
Q.1) kinetic energy caused by moving electrons ?
eletrical energy
Q2.) what kind of kinetic energy that moves in waves and can been seen?
light energy
Q3.) energy stored in matter ?
chemical energy
Q4.) the sum of an object's kinetic and potential energy ?
mechanical energy
which electron carrier is not mobile or diffusible in the mitochondrial electron transport chain?
Answer:
FAD is the correct answer
Explanation:
pls choose it as the brainiest answer
( i will give you brainliest who ever answers the question first and the right answer!!!)
What do you predict would happen if you brought a negatively charged balloon next to an uncharged piece of paper?
A. The balloon will attract the paper.
B. The balloon will repel the paper.
C. Nothing will happen.
D. The paper will repel the balloon.
Answer: A
Explanation:
Answer:
B. The ballon will repel the paper