Answers
Explanation:
You multiply the atomic weight and I believe the protons.
Related Questions
Observation: I am in the lab timing how long it takes to boil 100 mL of water in a beaker over a Bunsen burner. I observe it takes 5:15 mins to boil the water. I want to get the most accurate answer possible so I repeat the test again making sure everything is the same. This time it takes 7:05 mins to boil the water. I think this is unusual so I repeat the experiment a third time and it takes 5:20 mins. What could we infer about the differences in the times observed?
Answers
Answer:
The likely causes inferred about the differences in times observed are;
1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid
2) Variation of heat input due to wind draft that alters the focus of the flame
3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water
Explanation:
The factors that affect the boiling point of water includes;
1) The amount of heat supplied, to the water
2) Vapor pressure above the water surface
3) Presence of impurities in the water
Therefore, the most likely causes for the difference in the times observed for the water to boil in the order of increasing probability of cause and effect are therefore;
1) Slight increase of the vapor pressure of the air immediately above the water surface due to the presence of a lid
2) Variation of heat input due to wind draft that alters the focus of the flame
3) The introduction of impurities into the water from the water source or through the sourcing mediums or containers or during handling of the water.
We can infer that the observed time differences may be the result of impurities present in the water.
We can achieve this result because:
The water boils when it reaches a temperature of 100ºC.In this case, if the student shown in the question above used the same amount of water, in the same beaker, and the same heating intensity, all experiments should have taken the same amount of time to boil the water.However, the boiling temperature of water (100°C) can be changed if the water contains any kind of impurity. In this case, we can infer that the second experiment of the student contained impure water, which made the boiling temperature higher.
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1. What is the mitochondra in a cell? What is its primary funtion?
Answers
Answer:
Its the powerhouse of the cell.
Explanation:
It breaks down food into energy.
I hope this helps. :3
1) 5,730 s to ks
2) 22,000 mg to cg
3) 0.077 ks to ms
PLEASE BE CAREFUL AND PAY ATTENTION TO COMMAS AND DECIMALS!
Answers
Answer:
1) 5.73 ks
2) 2200 cg
3) 77000 ms
Explanation:
Using the above scenario, which of these would have the largest amount of available energy?
A) grass
B) grasshopper
C) snake
D) hawk
Answers
Answer:
Grass
Explanation:
The higher up you go in a food chain, the less energy available and the more you have to use to acquire energy.
Science:What does feCI2 answer from the periodic table? need answer asap!!
Answers
Answer:
magnesium chlorine ×2 otherwise is this physics or general science
what will be the colour of Naoh solution when added to phenolphthalein
Answers
Explanation:
determine the level of your emotional maturity.
CAN YOU KEEP YOUR CALMNESS IN STRESSFUL SITUATION?
Kendall has an empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble
Answers
Answer:
She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.
Explanation:
Graduated cylinders are used to measure volume, hence she can be able to measure the volume of the marble from the volume of water displaced. The measuring cylinder is also used to measure the volume of the water. The balance is used to measure the mass of the water and mass of the marble.
Cycling enthusiasts often prefer bicycles made with titanium frames. Titanium is resistant to corrosion and fatigue, has a significantly lower density than steel, and seems to have a natural shock-absorbing ability. Suppose a high-quality titanium frame contains 1300 g of titanium. How many moles of titanium does this frame contain? (A calculator can be used) A) 27.16 moles B) 62.23 moles C) 1.6 x 1026 moles D) 27 moles
Answers
Answer:
A) 27.16 moles
Explanation:
According to the question, Titanium element (Ti) is the major constituent of a frame used to make a bicycle.
The titanium-frame contains 1300grams of titanium. Thus, the amount of moles in the frame can be calculated using the formula:
Number of moles = mass ÷ molar mass
Molecular weight or molar mass of Titanium= 47.87g/mol
Hence;
Number of moles= 1300/47.87
No. of moles= 27.15688
No. of moles= 27.16 moles
Note that, the less precise measurement will be used. 27.16 (4s.f) is less precise than 27 (2s.f)
What forces makes a fan stop spinning?
Answers
Answer:
And since there is a frictional force acting upon the rotating blades of the fan due to the air, the speed of the fan blades ceases and ultimately comes to halt. Thus here, air friction is the external force which makes the fan blades to stop after sometime, otherwise it would have never stopped rotating :P.
Explanation:
Answer: air friction
Explanation:
Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes. Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change. Chemical changes involve the formation of a new substance.
Answers
Answer:
Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change. Chemical changes involve the formation of a new substance. Formation of a gas, solid, light, or heat are possible evidence of chemical change.
brainliest???
Answer:
Physical changes occur when the properties of a substance are retained and/or the materials can be recovered after the change.
Explanation:
BRAILY I NEED HELP ASAPP
When an object has a definite
shape, how is it measured? Give an
example of an object and the tool
you would use to measure it.
Answers
Explanation:
Mass is the amount of matter in an object. Mass is measured in grams (1000 grams = 1 kilogram). 2. Solid- The particles of matter in a solid are tightly packed together and have a definite shape and take up a definite amount of space (volume).
for example and apple you can use a scale to find the mass. or a graduated cylinder to find the volume
What is the chemical formula for barium and chlorine?
Answers
Answer:
Barium chloride is an inorganic compound with the formula BaCl2.
chlorine Cl-
Answer:
The chemical formula is BaCl2
What makes a question testable? Can someone help me on this pls it has to be either a 4-5 sentence! this is a science question.
Answers
Answer:
testable questions are answer through observation or an experiment that provides evidence that the questions connects to the scientific concepts rather the opinion feelings
therefore the question can be tested through observation or experiment
22) A(n)
needs to be carefully planned so that it is controlled and measurable and
its results are repeatable .
A. chart
B. journal entry
C. experiment
D. observation
E. article
Answers
Answer:
chart
Explanation:
list three examples each of objects that are comonly measured by mass, by volume, and by length
Answers
Answer:
Explanation:
Milk, flour, gold
you know the mass of an object and the force applied to the bject to make it move . Which of Newtons laws of motion will help you calculate the acceleration of the object
Answers
Answer:
second law of acceleration
Explanation:
hope this helps :)
Answer:
third newtons law of motion
which type of electronic radiation has a lower frequency than infrared radiation? A gamma rays B microwave C visible light D x-ray
Answers
Answer:
A, gamma rays
Explanation:
Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.
The Rydberg constant is 3.3 x 10 15 Hz. this value is also
Answers
Answer:
Rydberg constant 3.3 x 10¹⁵ Hertz is equal to 1.090 x 10⁷ m⁻¹
Explanation:
Given;
Rydberg constant as 3.3 x 10¹⁵ Hz
1 Rydberg constant = 3.3 x 10¹⁵ Hz
1 Rydberg constant = 1.090 x 10⁷ m⁻¹
Therefore, Rydberg constant 3.3 x 10¹⁵ Hertz is equal to 1.090 x 10⁷ m⁻¹
Here, we are required to identify another value for the Rydberg constant part from 3.3 × 10¹⁵Hz.
This value is also R = 1.1 × 10⁷.
The Rydberg constant, R is a constant relating to the electromagnetic spectra of an atom.
The value of Rydberg constant is 3.3 x 10¹⁵Hz above and is in terms of the Frequency of the spectra lines.
However, another way to express Rydberg constant is by dividing its value above by the speed of light, c to yield;
R = R'/c where c = speed of light = 3 × 10⁸m/s.This Rydberg value is also, R = (3.3 × 10¹⁵)/3×10⁸.
Therefore, this value is also R = 1.1 × 10⁷.
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Life science explores _____.
the nature of the earth and space
how living things interact with the earth
humans and their cultures
the structure of atoms and molecules
Answers
Answer:
the world
Explanation:
Answer:
The nature of the earth and space! From the smallest microbe to the largest mammal, Life Science explores the origins, evolution and expansion of life in all its forms. Explore a wide range of topics from biology to genetics and evolution.
Hope this helps!Atoms can be neutral with different numbers of protons and electrons True or False
Answers
Answer:
False
Explanation:
ok?
During a chemical reaction...
A) atoms are destroyed, but new atoms are created to keep the mass the same.
B) atoms are rearranged, and new matter is formed.
C) atoms are destroyed, and this explains how the universe is always changing.
D) atoms are rearranged, but no new matter is formed.
Answers
Answer:
the answer is going to be D
Explanation:
the make new product but do not change
Determine the volume of fluid in the graduated cylinder 12.8ml 12.7ml 12.78ml 12.88
Answers
Answer:
the volume is 12.79ml
Explanation:
12.8+12.7+12.78+12.88=51.16
51.16/4
=12.79
If you have two substances with the same volume, but different masses,
which one is more dense?
Answers
Answer:the one with more mass
Explanation: the more mass the more dense
What does it mean for a hypothesis to be testable? APEX
Answers
Answer:
A Scientific hypothesis must be testable, for a hypothesis to be testable means that it is possible to make observations that agree or disagree with it. This statement may or may not be true, but it is not a scientific hypothesis. That's because it can't be tested.
Explanation:
The clown, which your grandparents hire for your 18th birthday, is filling balloons with helium (He) to a volume of 2500 mL. If the density of helium (He) at room temperature is 0.0001785 g/mL, calculate the mass of the helium the clown is using.
Answers
Answer:
.45g
Explanation:
Do not forget to add the unit at the end, grams(g).
If D is neutral liquid, which of the following is C
heat
MgCO3
(A) + (B)
C с
MgCl2 + (D)
Answers
Answer:
Cl2
Explanation:
Bcs in product there is chorine
What do you think the difference is between a personal characteristic and a physical description, when talking about people?
Answers
Answer:
I would say a physical characteristic is about what a person looks like, whereas a personal characteristic is how they act, and what theor personality is like.
Explanation:
Physical means something you can see or touch, like hair or skin. Personal is more often used for how someone's personality is, and you can't touch someone's personality.
What are the physical properties of a bowl of cereal?
Answers
Answer:
Physical and functional properties (gelatinization degree, bulk density, expansion ratio, water absorption index, water solubility index, and sensory characteristics (hardness, crispness, and bowl life) of cereal extrudates were determined.
TRUE OR FALSE
Friction is a force that acts in the same direction as the that of the object in motion
Answers
Answer:
False.
Explanation:
Friction is a resisting force that acts on a body to prevent its motion. Friction force acts opposite to the direction of motion.
Which prototype is the most cost- and time-effective solution? The Rockets First company needs to hire an engineer to develop a prototype rocket. The company asks several engineers to provide a cost and time estimate for creating a prototype. Each bid is shown in the table. O Fast Flight Prototype Total Name Cost in Millions Months to Build O Higher Flyers O Orbit or Bust O Infinity & Beyond Fast Flight $400 24 Higher Flyers $500 34 Orbit or Bust $200 10 Infinity & Beyond $900 20 Submit Next Save and Exit Mark this and return
Answers
Answer:
Infinity & Beyond
Explanation:
hope I helped!
Answer:
Orbit or Bust
Explanation:
Shortest build time and least cost
