Answer:
99.8%
Explanation:
Answer: 99.8%
Explanation:
Sun Facts. The Sun is the largest object within our solar system, comprising 99.8% of the system's mass. The Sun is located at the center of our solar system, and Earth orbits 93 million miles away from it. Also the sun is the hottest star in the ENTIRE galaxy :)
Select the correct answer.
What is the chemical formula of calcium chloride?
A.
CaCl
B.
Ca2Cl2
C.
Ca2Cl
D.
CaCl2
Answer:
D.CaCl2
Explanation:
Answer:
ans is D because the velency of calcium is 2 and clorine is 1 if we do cross multyply then it is option d5. What is the charge on a single proton?
Answer:
it may be +1 or -1 hope this help
An atom is a kind of stuff that cannot be further decomposed chemically. Therefore, the charge on a single proton is +1.
What is atom?
The building block of an element is an atom. An atom is a kind of stuff that cannot be further decomposed chemically. The three main components of an atom are protons, neutrons, plus electrons.
Some substances are either bigger or smaller than atoms. Instances of chemical species that aren't commonly regarded as atoms include protons, neutrons, and electrons, which are atom-related particles. Atoms make up molecules and compounds, however they are not actual atoms. Salt is an example of a molecule and a compound (NaCl). The charge on a single proton is +1.
Therefore, the charge on a single proton is +1.
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What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?
Answer:
23
Explanation:
Answer:
0.118m
Explanation:
7. A small stone added to boiling liquids to make them boil more evenly without sudden violent releases of
vapours are called
Answer:
A boiling chip, boiling stone, porous bit or anti-bumping granule is a tiny, unevenly shaped piece of substance added to liquids to make them boil more calmly.
These help in making the liquid boil more easily
Answer:
umm i think it's called boiling chip
Why aren't acid-base reactions considered redox reactions, even though they involve the transfer of hydrogen atoms?
Answer: Acid/base and precipitation reactions almost always are NOT redox reactions. For redox to have happened, the number of electrons that an element has must change (i.e. its oxidation state must change). ... But the hydrogen ion never "has" any electron throughout the process and remains in a +1 oxidation state.
Explanation:
let me know if that helped...(☞ﾟヮﾟ)☞
Acid-base reaction is not a redox reaction, since the oxidation number remains unchanged in acid-base reaction.
What is acid-base reaction?An acid-base reaction is the chemical reaction that occur when acids and bases react together.
What is redox reaction?Redox reaction is a reaction that involves the transfer of electrons between the atoms, ions, or molecules.
Acid-base reactions involve the transfer of hydrogen ions between reactants. Redox reactions involve a change in oxidation number for one or more reactant elements.
Redox reactions involve a change in oxidation number for one or more reactant elements.
Acid-base reactions involve a transfer of a hydrogen ion instead of an electron and the transfer of an H+ ion leaves the oxidation numbers unaffected.
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The tectonic plates float on the lower portion of Earth's crust?
Answer:
The tectonic plates comprise the bottom of the crust and the top of the Earth's mantle. There are ten major plates on Earth and many more minor ones. They float on a plastic-like part of the Earth's mantle called the asthenosphere.
Explanation:
Answer:
Yes
Explanation:
Standard temperature and pressure are
A. 0°C and 1.00 kPa
B. 0°C and 101.3 kPa
C. 273°C and 1.00 kPa
D. 273°C and 101.3 kPa
Answer:
D
Explanation:
answer for brainlist and extra points!!
Answer:D
Explanation:
what is the molarity of 5.63 moles of lithium in 3.25 liters of solution
Answer:
1.73 Molar
Explanation:
The formula is Molarity=moles of solute/liters of solution, which can be written in whatever way you prefer, and examples include: M=N/V or M=mol/L.
M=N/V
M= [tex]\frac{5.63}{3.25}[/tex]
Divide 5.63 by 3.25. When you calculate this, you get 1.73, therefore your answer is 1.73 molar.
I gotta pick 4 last question to pass :,) pls help:>
whoever answers first will be marked brainliest unu
Answer:
Explanation:
heat up the solvent
increse the pressurre of the mixture
add more solute
agitate
Balance the following equation:
Sg + F2 --> SF
Answer:
S+ F2 ⇒ SF
S=1
F =2
So S +F2 ......... 2SF
2S + F2 ..........2SF this is a balance equation
S=2 F=2 in left side s=2 F = 2 in rightside
Explanation:⇆
⇒
The two basic types of air pollutants are _____.
liquids
invisible
particulates
gases
Answer:
particulates and gases
Explanation:
Mention the reason why aquatic plants have air filled tissues.
Answer:
Aquatic plants have aur filled tissues to make them easy to float.....
Explanation:
It provides buoyancy
Two different gases are stored inseparate closed containers. If both gases have a temperature of 50°C, which
statement is true?
Answer:
Explanation:
there should be more showing than telling
8. Look at the following electronic configurations of elements and predict which element has the highest electron affinity? Explain your answer. [ /3A]
a. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
b. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5
c. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6
d. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
e. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2
Answer:
e, beacause that is the higher voltage
Explanation:
calculate
Level 3
Q1
Forces that are equal but opposite
are called
A. Net force
B. Friction
C. Centripetal force
D. Balanced forces
option D Balanced force
What is the different things that we have and animals?
Answer:
the different things that we have and animals are.:
to gain emotional support.it acts as a real friend.for meat,flesh,milk and milk products, wool,etc.for transportation like horseto enjoy and play like with dolphinsWhat volume of ammonia (NH3) will react completely with 25.0 liters of O2? 4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
Answer:
18,75 litres
Explanation:
4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
n (NH3) : n (O2) = 4 : 3
<=>
V (NH3) : V (O2) = 4 : 3
Hence, V(O2) = 3 × V (NH3) ÷ 4 litres
V(O2) = 3 × 25.0 ÷ 4 litres
V(O2) = 75 ÷ 4 litres
V(O2) = 18,75 litres
If you have any questions, feel free to ask :)
When would scientists need to change a theory?
Answer:
if it cannot be made to fit the new findings
Answer:
As additional scientific evidence is gathered, a scientific theory may be modified and ultimately rejected if it cannot be made to fit the new findings; in such circumstances, a more accurate theory is then required.
Explanation:
please follow me
iammallikaif a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, how many moles of ammonia gas would be produced?
Answer: 3.00
Explanation: got the answer from my teachers notes
According to stoichiometry, if a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, 3 moles of ammonia gas would be produced.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is useful in balancing chemical reactions.In the given reaction 3 moles hydrogen gives 2 moles ammonia, thus, 4.5 moles of hydrogen will give, 4.5×2/3=3 moles.
Thus, if a sample of 4.50 moles of hydrogen gas was reacted with excess nitrogen, 3 moles of ammonia gas would be produced.
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please help i don’t know this at all i am in a test
Please please help me!!!! I WILL GIVE BRAINLIEST
Answer:
20.0 sec
you can use ln (2)=k* t1/2 then ln N2/N1=-k(t2-t1)
or just divide 100 by 2 then 50 by 2 then 25 by 2 then 12.5 by 2 and that is 4 half lifes at 5 secs each
Explanation:
How much does a 130 kg object weigh on Earth?
A 130 kg object weighs approximately, 1274 Newtons on Earth.
The weight of an object on Earth can be calculated using the formula:
Weight = mass × acceleration due to gravity
Weight is calculated by multiplying the mass of an object by the acceleration due to gravity. On Earth, the acceleration due to gravity is approximately 9.8 meters per second squared (9.8 m/s²).
In this case, we have a 130 kg object. To find its weight on Earth, we can use the formula:
Weight = mass × acceleration due to gravity
Weight = 130 kg × 9.8 m/s²
Weight = 1274 Newtons (N)
So, the weight of a 130 kg object on Earth is approximately 1274 Newtons.
Therefore, a 130 kg object weighs approximately, 1274 Newtons on Earth.
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HELP IM BEING TIMED
What type of weather can Georgia expect in the next 12 hours?
A light rain or drizzle
B heavy precipitation or thunderstorms
C many days of rain, snow, or fog
D sunny, clear, and windy
Answer: I think it's B
An isotope of an element has 95 protons and 146 neutrons. What is the symbol for this
element?
Answer:
238 is the answer
Explanation:
238 - 146 + 3 = 95
Americium (95Am) is an element that has 95 protons and 146 neutrons in its nucleus of an atom.
What is Americium (95Am)?Americium is an element that has 95 protons and 146 neutrons. Its symbol is Am. Its atomic mass is 241 amu which is get by addition of proton and neutron.
So we can conclude that Americium (95Am) is an element that has 95 protons and 146 neutrons in its nucleus of an atom.
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Look at the periodic table below. Which of the following lists of elements forms a group on the periodic table?
periodic table
Group of answer choices
Sc, Ti, V, C
Answer:
I'm not totally sure but I think that it is C-carbon
Explanation:
because its in the area of +1+2+3 4 -3 -2 -1
Which group in the periodic table contains the lightest ferromagnetic element?
Question 12 options:
A)
Group 9
B)
Group 8
C)
Group 10
D)
Group 7
The answer is B) Group 8 .
What is the formula for sulfate?
What is the charge of sulfate?
What is the correct formula for copper (II) sulfate?
Answer:
SO₄²-, -2, CuSO4
Explanation:
Dang that was long.
Can you help me please....
sorry the pic is blocked
The microscope has the power to show details of
an object more clearly. This is known as
Answer:
Explanation:
in order for the user to clearly view an image, the microscope must carry out two processes. ... the ability of the microscope to increase the size of the image of an object is called______. magnification. the microscope has the power to show details of an object more clearly.
The power of a microscope to show details of an object more clearly is: resolution.
A microscope can be defined as an optical device which is typically designed and developed to make an enlarged (magnified) image of a minute (very small) object, in order to show all the littlest or tiniest details (information) about the object that cannot be seen by the natural human eye.
Generally, the different types of microscopes include:
Inverted microscope.Compound light microscope.Scanning electron microscope.Polarizing microscope.In Science, the resolution of a microscope is a measure of its power to clearly show the details of an object.
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