Answer: 9.007
Explanation:
Be-8 8 x 0.20% = 0.016
Be-9 9 x 98.90% = 8.901
Be-10 10 x 0.90% = 0.09
100.00% 9.007
what is daltons theroy
Answer:
A theory of chemical combination, first stated by John Dalton in 1803. It involves the following postulates: (1) Elements consist of indivisible small particles (atoms). (2) All atoms of the same element are identical; different elements have different types of atom. (3) Atoms can neither be created nor destroyed.
Explanation:
Velocity has both speed and direction, so it is a what
Answer: Velocity is a mathematical vector. That means it has both a magnitude (speed) and a direction. Scientists need to consider an object’s velocity to calculate its momentum — its velocity multiplied by its mass. Scientists use measures of velocity in everything from figuring out how much rain is falling to sending a rocket to space.
Explanation: Hope this help:)
if a light wave has a wavelength of 5.80x10^-7 what is its frequency
Speed = v = 3×10⁸ m/s
Wavelength = λ = 5.8×10⁻⁷ m
Frequency = f
v = fλ
Hence,
f = v/λ
f = 3×10⁸ / 5.8×10⁻⁷
f = 0.517×10⁸⁺⁷
f = 5.17×10¹⁴ Hz
i hope this will help but if im wrong then it will be 5.16x10¹⁴
Which ion below is NOT correct and what is wrong with it? Na^1+, Ca^1+, F^1-, P^3-
Answer:
Na1+; Ca2+; F1-; P5- or P3-
Explanation:
WILL MARK AS BRAINLIEST IF CORRECT
The temperature of an enclosed gas at constant pressure changes from 400 K to 100 K atm. What happens to the volume of the gas?
a
The volume will increase to 4 times its original volume.
b
The volume will stay the same.
c
The volume will decrease to 1/2 of its original volume.
d
The volume will decrease to 1/4 of its original volume.
e
The volume will increase to 2 times its original volume.
Answer:
a
Explanation:
they are directly proportional. if one goes down the other goes up while pressure is constant
need help with cemester
Answer:
See explanation
Explanation:
20 = B
21 = C
22 = D
23 = B
24 = B
25 = C
For X + Y → XY, if [XY] is increasing at a rate 0.10 M s-1, predict the rate of depletion of both reactants.
If i blow up a ballon, tie it off, and release it, it will fall to the floor, why does it fall instead of float
Answer:
The balloon would fall because carbon dioxide, the gas you exhale and blew up with, is denser than air and therefore will fall. Helium however, is less dense than air and floats.
hope this helps :)
A flagpole is an example of what type of pulley system?
A. Movable pulley
B. Fixed pulley
C. Block and tackle?
Answer:
B
Explanation:
i learned the pulley system in school
Answer:
B. Fixed pulley
Explanation:
HELLLPP!!!
what is a oxidation mean
What are the Characteristics of handwriting?
Describe the activities to prove that Liquid exerts pressure equally and perpendicularly in all direction
ANSWER ASAP PLS 50 POINTSS ;) ;)
Answer:
I would say D) A new substance is formed with different properties.
It doesn't nesisarally have to have a specific change (except mass), but it could be a wide variety of changes.
Answer:
A New substances form with different properties
Explanation:
When two different chemical substances are combined, they form new substances with different properties. The properties may be modified and the substance formed may exhibit better characteristic than individual properties of its components. For example, when sodium and chlorine combine, they form sodium chloride. Sodium chloride has different properties than any of the constituents.
What was John Dalton's contribution to the development of the atomic theory?
A
Dalton recognized that tiny atoms combined to form complex structures.
B
Dalton recognized the presence of electrons around a nucleus.
C
Dalton recognized the presence of protons in the nucleus.
Answer:
A. Dalton recognized that tiny atoms combined to form complex structures.LIST TWO REASONS WHY WE SHARE OUR RESULTS A SCIENTIFIC INVESTIGATION
Publishing results of research projects in peer-reviewed journals enables the scientific and medical community to evaluate the findings themselves. It also provides instructions so that other researchers can repeat the experiment or build on it to verify and confirm the results.
Does someone know the combustion in a jacket potato???
Answer:
Some varieties of potato, such as Russet and King Edward, are more suitable for baking than others, owing to their size and consistency. Despite the popular misconception that potatoes are fattening, baked potatoes can be part of a healthy diet.[2]
Can someone help please?
Copper occurs naturally as a mix of two isotopes: Copper-63 with a mass of 62.930 amu and copper-65 with a mass of 64.928 amu. The percent abundance of copper-63 is 69.09%.
Calculate the atomic mass of copper.
Answer: 63.55
Explanation:
The attached chart shows the calculation. The orange line points to the % abundance of Cu-65, which is the difference of 100% less the % Abundance of Cu-65 (since there are only 2 isotopes).
The weighted average contribution of each istope is calculated (blue arrow) and then summed to find the atomic mass of copper.
The overall chemical reaction for photosynthesis
is shown below:
6CO2 + 6H2O → C6H1206 + 602
What mass of glucose (C6H1206) can form from
71.89 g CO2? (Molar mass of C6H1206 = 180.18
g/mol; molar mass of CO2 = 44.01 g/mol)
71.89 g CO2 =
Ig Cg H 1206
DONE
Answer:
49.05 g
Explanation:
6co2+6h20-c6h120+602
Which is a valid velocity reading for an object?
45 m/s
45 m/s north
0 0 m/s south
0 m/s
Save and Exit
Next
Sunt
Mark this and retum
if the reactants of a reaction have an initial mass of 25g what should the mass of the products be
Answer:
It remains the same
Explanation:
The law of conservation of mass states that, during a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.
Elijah performed an experiment to explore the differences between chemical and physical changes. In which trial did Elijah observe the formation of new substances with different properties
Answer:
in the chemical trial.
Explanation:
Why are engineers called applied scientist?
Answer:
Applied science is a discipline that is used to apply existing scientific knowledge to develop more practical applications, for example: technology or inventions. In natural science, basic science (or pure science) is used to develop information to explain phenomena in the natural world.
Answer:
• Because engineers apply science and its theories into practical situation
Take an example of;
→ A generator: When creating a generator, electromagnetic induction theorem is applied. [ self and mutual inductance ]
→ A plane: The wings are made in considerance of Bernoulli principle and viscous drag
[tex].[/tex]
Golgi body function
Lysosome function
Mitochondria function
Vacuole function
Cell wall function
Chloroplast function
Ribosome function
Endoplasmic reticulum function
Explanation:
GOLGI BODY - transportation of lipids and steroids.
LYSOSOME - destruction of malfunctioning or worn out cell organelles.
MITOCHONDRIA - oxides glucose to give energy to the cell in a form of cellular respiration.
VACUOLE - FOOD VACUOLE for storage of food while WATER VACUOLE eliminates excess water by a process called OSMOREGULATION.
CELL WALL - provides rigidity for the plant cell.
CHLOROPLAST - pigmented organelle of the plant which functions to manufacture food by a phenomenon known as PHOTOSYNTHESIS.
RIBOSOME - synthesizes protein and enzymes.
ENDOPLASMIC RETICULUM - The ROUGH ENDOPLASMIC RETICULUM has RIBOSOMES attached to it while the SMOOTH ENDOPLASMIC RETICULUM has nothing attached, they transport proteins and enzymes
Convert 9.79 kilograms (kg) to decagrams (dg).
А
0.979 dg
B 97.9 dg
C979 dg
D
9,790 dg
Answer:
C) 979 dg
Explanation:
1 Decagram = 0.01 Kilogram, and 1 kilogram = 100 Decagram.
Hope this helps :)
Answer:
fsf
Explanation:
sdfsd
co2,nacl,hcl are all classified as what
Answer:
co2 oxide,nacl salt ,hcl acid
helppppppppppppppppppppppppp
Answer:
lose 1 2+
Explanation:
I honestly don't know
What is the resultant force of a motorcycle travelling at 500 N with an air resistance of 50 N
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The resultant force is equal to :
[tex]500 - 50[/tex][tex]450 \: \: N[/tex]what is the scientific notation of (41 e 23) (8.0 e 3)
Answer:b
Explanation:
once an enzymatic reaction is completed, the enzyme releases what?
Answer:
Once an enzymatic reaction is completed, the enzyme releases substrates.
Explanation:
The enzyme will always return to its original state at the completion of the reaction. One of the important properties of enzymes is that they remain ultimately unchanged by the reactions they catalyze. After an enzyme is done catalyzing a reaction, it releases its products (substrates).
Please help!
Answer please!
Answer: a
Explanation: a