Answer:
In a covalent bond, the atoms bond by sharing electrons. Covalent bonds usually occur between nonmetals. For example, in water (H2O) each hydrogen (H) and oxygen (O) share a pair of electrons to make a molecule of two hydrogen atoms single bonded to a single oxygen atom.
hope this helped
please give brainlist
Answer:
Nonmetals with Nonmetals
Explanation:
Their difference in electronegativity is below 1.7
Which is a postulate of the kinetic-molecular theory?
O Gas particles have a small volume relative to the spaces between them.
Gas particles have a large volume relative to the spaces between them.
Gas particles are very small in size and always move slowly.
O Gas particles are very large in size and always move slowly.
Answer:
Gas particles have a small volume relative to the spaces between them.
Explanation:
i just took the quiz.
Gas particles have a small volume relative to the spaces between them is the postulate of the kinetic molecular theory.
What is kinetic molecular theory?The kinetic molecular theory describes about the behaviour of ideal gases at the particle level.
The five main postulates of the kinetic molecular theory are as follows:
1) The particles in a gas are in constant and random motion
2) The combined volume of the particles is negligible.
3) The particles exert no forces on one another.
4) The collisions between the particles are completely elastic.
5) The average kinetic energy of the particles are proportional to the temperature in kelvin.
Hence, we can conclude that option 1 is the answer.
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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.
Answer:
.45g
Explanation:
Do not forget to add the unit at the end, grams(g).
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
Answer:
chart
Explanation:
What are protons explained simply
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
Answer:
second law of acceleration
Explanation:
hope this helps :)
Answer:
third newtons law of motion
The Rydberg constant is 3.3 x 10 15 Hz. this value is also
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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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
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.
Science:What does feCI2 answer from the periodic table? need answer asap!!
Answer:
magnesium chlorine ×2 otherwise is this physics or general science
Determine the volume of fluid in the graduated cylinder 12.8ml 12.7ml 12.78ml 12.88
Answer:
the volume is 12.79ml
Explanation:
12.8+12.7+12.78+12.88=51.16
51.16/4
=12.79
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!
Answer:
1) 5.73 ks
2) 2200 cg
3) 77000 ms
Explanation:
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.
Answer:
the answer is going to be D
Explanation:
the make new product but do not change
What do you think the difference is between a personal characteristic and a physical description, when talking about people?
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.
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.
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.
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
If D is neutral liquid, which of the following is C
heat
MgCO3
(A) + (B)
C с
MgCl2 + (D)
Answer:
Cl2
Explanation:
Bcs in product there is chorine
What does it mean for a hypothesis to be testable? APEX
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:
What is Composed of more than one particle called ?
Answer:
I think the answer is Atoms.
What are the physical properties of a bowl of cereal?
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
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.
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
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!In any pure sample of CO2, the ratio of the mass of carbon to the mass of
oxygen is always the same. You can justify this ratio by the fact that
compounds are composed of which of the following?
A. Identical molecules created from atoms combined in whole
number ratios
B. Atoms whose chemical properties do not change during a
chemical reaction
O C. Atoms whose masses do not change during a chemical reaction
D. Different molecules which together produce the observed
elemental ratios
Answer:A
Explanation:por q si bb
Identical molecules created from atoms combined in whole number ratios this is the best justification for In any pure sample of CO2, the ratio of the mass of carbon to the mass of oxygen is always the same.
What ratio of Mass of Oxygen and Carbon?Consider the elements carbon and oxygen. Combined in one way, they form the familiar compound carbon dioxide. In every sample of carbon dioxide, there are 32.0g of oxygen present for every 12.0g of carbon. By dividing 32.0 by 12.0, this simplifies to a mass ratio of oxygen to carbon of 2.66 to 1.Carbon has an atomic weight of 12, oxygen in diatomic form(O2) of 32 and CO2 of 44. This means that the mass of 6x1023 atoms of CARBON has a mass of 6 kilograms, the mass of 6x1023 diatomic oxygen molecules is 32 kg, and for CO2 it is 44kg. So carbon is the lightest and CO2 the heaviest.Identical molecules created from atoms combined in whole number ratios this is the best justification for In any pure sample of CO2, the ratio of the mass of carbon to the mass of oxygen is always the same.
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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
Answer:
Infinity & Beyond
Explanation:
hope I helped!
Answer:
Orbit or Bust
Explanation:
Shortest build time and least cost
(Please help!)
Which mixture below could be separated by distillation only?
Oacetone dissolved in water
O a pepperoni pizza
O pure water
O hydrogen
list three examples each of objects that are comonly measured by mass, by volume, and by length
Answer:
Explanation:
Milk, flour, gold
which type of electronic radiation has a lower frequency than infrared radiation? A gamma rays B microwave C visible light D x-ray
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.
Identify the control group and the independent and dependent variables in the following
scenario: 300 chickens are divided into three equal sized groups. Group A is injected weekly
with 10 mg of a growth hormone. Group B is injected weekly with 25 mg of the growth
hormone. Group C is not given any growth hormone. All 300 chickens are weighed after again
after 3 months.
The control group is II
The independent variable is
The dependent variable is
« Previous
Answer:
The controls group = group c
Independent variable = number of mg with respect of growth hormone
Dependent variable = Chicken growth
Explanation:
According to the given situation, the controls group represents the group C. The independent variable shows the number of mg of the hormone growth
And, the dependent variable depicts the growth of a chicken
Also, in the contract group, there is nothing for addition
And, the chicken growth would be depended upon the hormonal growth
Using the above scenario, which of these would have the largest amount of available energy?
A) grass
B) grasshopper
C) snake
D) hawk
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.
1 Smurf = 3 Snorks
1 Snork = 6 Pookas
8 Pookas = 1 Flintstone1 Smurf = 3 Snorks
Answer:
all together you have 13
Explantation:
you have to add all them together
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.
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
what ions are produced when salt is dissolved in water
Answer:
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
Explanation:
Answer:
Sodium and chloride is porduced
Explanation:
Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. After the salt compounds are pulled apart, the sodium and chloride atoms are surrounded by water molecules, as this diagram shows. Once this happens, the salt is dissolved, resulting in a homogeneous solution.
