Answer:
filtration and chromatography
Explanation:
I hope this will help you :-)
Pls help with these two questions~-~
I need help with this question
Answer:
ok ok ok okbokvjhkeokkd
why did scientists accepted dalton's atomic theory but not the idea of an atom proposed by the greek philosophers?
Answer:
Because.in theory, it's impossible for philosophers (Greeks) don't have the proper equipment and also they don't have enough facts to back it up
Explanation:
Hope this helps
briefly explain how to separate a mixture of water, kerosene, sawdust and nahso4?
Answer:
Use filtration method lol.
A statement that describes what scientists expect to happen every time under a given set of conditions is call a scientific
Answer:
law
Explanation:
it is called a scientific law
can someone answer this
Answer:
[tex]{ \underline{ \sf{solubility}}}[/tex]
Please help me with this chemistry
Answer:
platinum is the correct answer
Answer:
it would be made of platinum
Explanation:
please answer quick...................
Answer:
3). C
Explanation:
When inter-nuclear distance [ atomic radius ] is smaller, the nuclear attraction has a greater magnitude.
[tex].[/tex]
Nitrogen is inactive gas, why?
because it doesn't react easily with other elements it requires high heat and other things
Solid solid soluton example
Explanation:
rice and rice coatssalt and sugarsand and mudwheat flour and corn flourwhat amount (in moles) is present in 2.0g of sodium hydroxide,NaOH
Answer: 0.050 moles of NaOH
Explanation: The molar mass of NaOH is 40.0g/mole
2.0g/40.0g/mole = 0.050 moles (2 sig fig)
Melting is
A. state of matter change from solid to gas.
B. state matter change from solid to liquid.
C. state of matter change from gas to liquid.
D. state of matter change from liquid to solid.
Answer:
b is correct
Explanation:
Answer:
B. state matter change from solid to liquid.
Explanation:
Melting happens when a solid turns (melts) into a liquid.
hope i helped
What common group name is carbon in on the periodic table?
Answer: it's group 14
Explanation:
The common group name for carbon is Group 14 (IVa) on the periodic table.
In what situation would you most likely need to use a computer to analyze data?(1 point)
When you have collected a lot of data most likely need to use a computer to analyze data. Option B is correct.
What is the analyzed data?The analyzed data is a system in which the unmanaged data or the messy data can be arranged in a recognizable sequence for the better study of something for which data is to be maintained.
The computer is needed for the process as the computer has some special characters to maintain tables according to alphabets and according to the number and can be taken out anytime want.
Therefore, Option B is correct. When you have collected a lot of data most likely need to use a computer to analyze the data.
Learn more about analyzed data, here;
https://brainly.com/question/12975796
#SPJ2
• 2. Using the following formula Force (N) = mass (kg) * acceleration (m/s").
What is the force of a ball with a mass of 5kg fallinly to the ground at
10m/s.
Answer
50 N
Explanation
name gaseous element in period 2 group 16?
Answer:
mark me as a brainlist answer
Explanation:
Oxygen
Why are intensive properties useful for identifying a substance?
pls answer this question
9 qn is bio i think
pls
Answer:
7. A. properties that differ from both iron and oxygen
8. D. cool the rod and heat the cylinder
9. B. sea level to a mountain top
Write a word equation for the chemical reaction.
I’ll brainlist.
Answer:
potassium hydroxide + sulfuric acid → potassium sulfate + water.
Explanation:
Hope it helps.. if yes, plz mark me as brainliest
which atom is indicated by this configuration - [Ne] 3s^1
Explanation:
Neon is [Ne] 3s2 3p3 = 1s2 2s2 2p6 3s2 3p3.
Someone plz help me giving brainliest m
Answer:
C
Explanation:
it would be the best action because questions are important when looking at designs/creating them.
What would the car weigh on Earth with a gravitational pull of 9.8 N/kg?
Answer:
Explanation:s the gravitational field strength on Earth's 9.8 N kg?
The gravitational field strength of the Earth is 10 N/kg (10 newtons per kilogram).
What are some possible molecules that could have the empirical formula, XY2Z?
Answer: a
Explanation:
i took the test
Someone plz help me :(
Answer:
Descriptive investigations use careful observations and measurements to develop findings. Science journals, science logs, and field notebooks are some of the tools scientists use to gather information for descriptive investigations.
Explanation:
Aqueous lead (II) nitrate, Pb(NO3)2 undergoes a double displacement reaction with aqueous sodium chloride, NaCl, in which a precipitate forms. If the precipitate contains lead, write the balanced chemical equation for this reaction. Be sure to include the states of each of the reactants and products
Answer:
[tex]{ \sf{Pb(NO_{3})_{2(aq)} + 2NaCl _{(aq)} → 2NaNO_{3(aq)} + PbCl _{2(s)} }} \\ [/tex]
32.5 g to fluid ounces
An element has an atomic number of 16. An ion of this element has a 2-charge. How was the ion formed?
Answer: The answer is ‘a neutral atom gained 2 electrons’
Explanation: Because electrons are negatively charged and adding 2 extra would make the ion negatively charged by 2
Answer:
The answer to all the quiz questions are
Explanation:
1. Which statement describes the number of protons in each atom of an element?
*The number of protons is given by the atomic number, which increases by one moving from left to right across each row of the periodic table.*
2. An element has an atomic number of 16. An ion of this element has a 2– charge. How was the ion formed?
*A neutral atom gained 2 electrons.*
3. Rubidium has an atomic number of 37 and a mass number of 85. How many protons, neutrons, and electrons does an ion of rubidium with a 1+ charge have?
*37 protons, 48 neutrons, and 36 electrons*
4. There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?
*Their atomic masses differ.*
5. Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?
*5*
In store A: A box of cotton candy costs 1 dollar, 12 boxes cost 12 dollars. In store B: 12 boxes cost 48 dollars. How much does each box cost in store B?
Answer:
4
Explanation:
If there is 12 boxs that cost $48, you need to divide the 12 boxs into the $48 to see how many time 12 goes into it to see how much it is. So 48 divided by 12 is 4.
Starches and sugars being broken down during energy production
a
Chemical Change
b
Physical Change
Answer:
A. Chemical ChangeExplanation:
When starches and sugars are being broken down during energy production it represents chemical change.[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]
Quais são as fórmulas das bases formadas pelos respectivos cátions Au3+, Fe2+, Pb2+, Na+ e Mn4+? *
Answer:
This is an English server, sorry
Explanation: