Answer:
elements cannot be break downNO LINKS!!!
Static electricity is a ____ charge.
A. permanent
B. missing
C. flowing
D. temporary
FeCl3
+
NaOH →
Fe(OH)
+
Naci
-
balance plzzzz help I live give u the brainliest
Atoms with the same number of protons but with different electrical charges are called:
Answer:
It is called ions
Explanation:
Which statement about states of matter is correct? (1 point)
O If you add enough heat to a gas, it will change into a liquid
If you cool a solid enough, it will change into a liquid
If you add enough heat to a solid it will change into a liquid.
o If you cool a liquid enough, it will change into a gas
Answer:
C
Explanation:
If you add enough heat to a solid it eventually becomes a liquid
When sodium is put in water, the metal floats on the surface and reacts to form sodium
pls help asap
Answer: Sodium also floats on the surface, but enough heat is given off to melt the sodium (sodium has a lower melting point than lithium and the reaction produces heat faster) and it melts almost at once to form a small silvery ball that dashes around the surface.
Explanation:
Answer:
hydroxide.
Explanation:
Alkali metals are in group 1 of the Periodic Table. They are on the left of the Periodic Table. These are the alkali metals as follows:
LithiumSodiumPotassiumRubidiumCaesiumFranciumWhen alkali metals react with water they make alkaline solutions, so the universal indicator turns people and they produce hydrogen and a metal hydroxide. When sodium is put in water, the metal floats on the surface it reacts to form sodium hydroxide and hydrogen.
A sample of gas occupies 20 mL at -109 degree C. What volume does the sample
occupy at 65 °C?
Answer: V2= 41.2mL
Explanation:
Givens:
* V1= 20ml
* T1 = -109 ⁰C --> K= ⁰C + 273.15 --> 164.15 K
* V2 = ??
* T2= 338.15 K
Use Charles law V1/T1 = V2/T2
Since we are looking for V2 we can rearrange the formula to
V2= (T2 x V1) /T1
V2= (338.15K x 20mL) / 164.15 K
V2= 41.2mL
NOTE:
Temperature should always be in K not in ⁰C or ⁰F
To convert from C to K use
*K= ⁰C + 273.15
Enter your C value in the ( ⁰C ) and you can get K
Pls help I will give u points pls
Answer:
i think D
Explanation:
Which element has a greater Ist ionization energy, Phosphorus or Fluorine?
Answer:
phosphorus
Explanation:
What type of weathering involves changes in the size or shape of the rock?
A: hydrolysis
B: physical weathering
C: pressure weathering
D: chemical weathering
Answer:
B
Explanation:
The rock is physically weathered down and decreases in size.
If two atoms have an electronegativity difference of 1.3, what type of bond would form between them?
Select one:a. non polar covalent b. polar covalent. c. ionic
Answer:
I would say iconic bond
Explanation:
Write the chemical formulas and names for the following ionic compounds. Cobalt (III) and bromine
Answer:
CoBr2,CoBr2·6H2O,CoBr2·2H2O
Explanation:
Please help.
Why does the temperature change when a powder is dissolved in water?
Answer:
In order for the powder to dissolve, each powder molecule must separate from the other powder molecules and be surrounded by water molecules. This shift in arrangement either absorbs or releases energy depending on the situation. It is due to the exchange of energy that the temperature of the solution fluctuates.
Explanation:
:)
Elements are usually dull, brittle and do not conduct electricity are know as_____.
Points: 46
Answer:
nonmetals. it's one of them
application of electroplating
Answer:
are you interested in tun
how do the densities of crystalline and amorphous polymers of the same material that have identical molecular weights compare?
(BRAINLIEST QUESTION)
Which answer below best describes what the law of Natural Selection is?
Select one:
a.
Natural selection is the process where those members of a species that can survive environmental hardships reproduce the future offspring with their strong characteristics being passed on, thus evolving the entire species.
b.
Natural selection is the process wherein species evolve over time because those members with common traits tend to survive hardships and produce more offspring.
c.
Natural Selection is the law that states the the natural evolution of a species is dependent on the shifts of the environment.
Answer:
I think it's A but I might be wrong
Explanation:
Zn-71 has a half life of 2.4 minutes. If one had 100g at the beginning, how many grams would be left after 12 minutes?
3.125g
Explanation
2.4 minutes = 1 half life
so 12 minutes = 5 half lives (12/2.4)
100g/2 = 50g (1 half life)
50g/2 = 25g (2 half lives)
25g/2 = 12.5g (3 half lives)
12.5g/2 = 6.25g (4 half lives)
6.25g/2 = 3.125g (5 half lives)
Choose the best answer.
What is the sum?
2/3+7/15
O 14/15
O1/2
O1 2/15
O3/5
Answer:
1 2/15
Explanation:
2/3 + 7/15 = 17/15 =1 2/15
Is oxygen ionic or molecular
Answer:
morlecular element is oxygen
what is meant by the term symbol of an element?
An element symbol is a one- or two-letter abbreviation for a chemical element name. When a symbol consists of two letters, the first letter is always capitalized, while the second letter is lowercase. Element symbols also can refer to alchemy symbols for the elements or to the symbols used to describe isotopes.
Study hard!
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.
why do the copper square, penny, and the statue of Liberty all soluble in water?
Answer:
It’s because of the green substance on the copper square, pennies and the Statue of Liberty giving those objects the ability to all be soluble in water.
Explain what happens during soil depletion and also how we can help prevent this naturally without chemicals?
PLZ FAST TYY <3
Answer: create more healthy products for the soil and animals
Explanation:
HELP WAAAAAAAAAAAAAAA
Answer:
5. 0.02 seconds
6. (a) 0.0167 seconds
(b) Period in Lebanon is 0.02 seconds and in the U.S 0.0167 seconds. That means that the U.S. has the faster period.
Explanation:
Nivel de energia maximo de 20Ca
what is the relationship between plants soil and nutrients?
Answer:
Soil helps anchor plants and provides them essential elements of water and nutrients. Plants prevent soil erosion and provide organic matter.
Explanation:
002 (part 1 of 2) 10.0 points
1.5 mol HCl and 3.7 mol NaOH react accord-
ing to the equation
HCl + NaOH → NaCl + H2O.
If the limiting reactant is HCl, calculate the
amount of NaCl formed.
1. 1.9
2. 2
3. 1.1
4. 1.5
5. 1
6. 1.8
7. 1.2
8. 1.3
9. 1.4
10. 1.7
Answer in units of mol.
mol,
Answer:
4) 1.5 mol
Explanation:
Well, the equation is already balanced and the mole to mole ratio of reactants and products are all 1. So if the limiting reactant is HCl and you have 1.5 mol, you do the mole to mole ratio with NaCl and since it is 1 to 1, there'd be 1.5 mol of NaCl.
Which statement is correct about charges?
A.Opposite charges repel
B.Similar charges attract
C.Electrons are positively charged
D.Similar charges repel
Answer:
A.Opposite charges repel[tex] \: \: \: \: [/tex]
D.Similar charges repelcorrect me if I'm wrong
hope it helpsA little help here please
Answer:
Prokaryotic Cells:
- Bacteria
- Unicellular Organisms
- DNA as genetic material
- Ribosomes
- Do not have membrane bound organelles
- Always contain cell wall
Eukaryotic Cells:
- Contains organelles
- Have membrane bound organelles
- Unicellular Organism
- DNA as genetic material
- Ribosomes
- Have loose strand of DNA
- Has nucleus
- Multicellular Organism
- Plant cell
- Animal cell
Explanation:
I have separated them and made the common characteristics in bold. I cannot guarantee that it is correct, these are my educated estimates.
Rain is-pouring down on you. Your friend asks where so much water
came from. You explain that the water could once have been
a) in a lake.
c) in an ocean.
-b) in-a river.
d) any of the above.
Answer:
D
Explanation:
It could come from anybody of water around you that had some water evaporated.