Answer:
Europium
Explanation:
Europium
Europium was isolated in 1901 and is named after the continent of Europe.
Europium - Wikipediaen.wikipedia.org › wiki › Europium
How many atoms of Pb are there?
Answer: i believe it is
602,000,000,000,000,000,000,000 atoms
Explanation:
6.02×1023 atoms/mole
HELP DUE TODAYYYYYYYYYYYYYYYY
An _______ is one form of a _______ where one received from each parent. Alleles are represented by ________.
PLSS ANSWER ASAP PLEASE.!!!!
Answer:
aren't there words??????
briefly explain why the number of electrons circling the nucleus determines the physical and chemical properties of the Atom
Answer:
Electrons are negatively charged particles that orbits the nucleus
Explanation:
Chemical and physical properties of elements are usually determined by the number of electrons they posses. When atoms combine, they do so in order to attain stability.
What geometric shape is the carbon dioxide molecule? The Lewis structure for CO2 contains two double bonds.
Hi!!!
Please explain what the Law of Conservation Of Mass is with the following terms:
Chemical Reaction, Reactant, Product, Balanced, Coefficient, and Subscript.
THANKS SO MUCH, Have a good day!!!
How long does it take for the entire pattern of moon phases to be completed?
A. it takes about a week
B. it takes about a month
C.it takes about a year
D.it takes a different amount of time each time the pattern
Which of the following is the best example of potential energy?
Group of answer choices
A car stopped at the top of a hill
A swimmer doing the backstroke
A bird making a nest
A gymnast doing a cartwheel
Answer:
A car stopped at the top of a hill
Explanation:
Potential energy is the energy that is stored in an object due to its position relative to some zero position.
therefore, the answer is the first option
=> A car stopped at the top of a hill
hope this helps and is right :)
Avanti works in a bookstore. She has four books and is going to place them in two stacks.
Speak Fast !!!The diagram above shows the books before they touch. Use the information in the diagram to answer the question.
How did the temperatures of the four books compare before they touched? How will the temperatures of the two top books compare after the books have been touching for a while, and why?
Answer:
um where's the diagram
Explanation:
I need it to help with the question
Which ecosystem is the most diverse ecosystem?
Group of answer choices
Artic
Tundra
Marine
Rain Forest
Answer:
Rain forest
Explanation:
The rainforest has a very diverse animal kingdom
Which energy source is not available during rain or a particularly cloudy day?
solar
wind
water
biomass
or geothermal?
Find the slope of the line that passes through the points (2, 11) and (8, 14).
Answer: The slope is M=1/2 you subtract 14-11 and subtract 8-2 which gives you 3/6 and the last answer becomes 1/2
Explanation:
please use a t least 2 of the words please! thank you
Answer:
model atoms
Explanation:
Match the term with its definition
Cytoplasm
Electron transport chain
Fermentation
Pyruvate
An organic molecule that occurs as an intermediate in many metabolic processes
The chemical breakdown of a substance
A process in which electrons are transferred from one compound to another with a release of energy occurring in the production of ATP
The gel-like material within a living cell
The rising magma that may result from this type of plate movement may produce
HELP
Answer:
Tectonic plates
Explanation:
Write the balanced chemical equation for the reaction shown.
Carbon is represented by a black sphere, nitrogen by a blue sphere, chlorine by a green sphere, and hydrogen by a white sphere. In the reactants there are three molecules that contain one black sphere and four white spheres. There are three molecules that contain two blue spheres and four green spheres. In the products there are three molecules that contain one black sphere and four green spheres. There are three molecules that contain two blue spheres. There are six molecules that contain two white spheres.
Answer:
3CH₄ + 3N₂Cl₄ → 3CCl₄ + 3N₂ + 6H₂
Explanation:
Carbon_black sphere
Nitrogen_blue sphere
Chlorine_green sphere
Hydrogen_white sphere
Reactants:
Three molecules that contain one black sphere and four white spheres
3CH₄
Three molecules that contain two blue spheres and four green spheres:
3N₂Cl₄
Products:
Three molecules that contain one black sphere and four green spheres:
3CCl₄
Three molecules that contain two blue spheres:
3N₂
Six molecules that contain two white spheres
6H₂
The reaction proper:
3CH₄ + 3N₂Cl₄ → 3CCl₄ + 3N₂ + 6H₂
Sidenote: I hope this answer helps!
Please answer with an actual answer and not just put a random word ^-^
Materials
large ball about the size of a basketball
small ball about the size of a tennis ball
strong light of about 100 watts or more
dark room
Directions
Place the large ball about 12 feet from the light source. Then place the small ball in the shadow of the large ball. Observe the shadow pattern.
Place the large ball in the shadow of the small ball. Observe the shadow pattern.
Questions
Which eclipse was modeled when the large ball was between the small ball and the light?
Which eclipse was modeled when the small ball was between the large ball and the light?
What does the large ball represent?
What does the small ball represent?
What does the light source represent?
Draw a picture showing a lunar eclipse.
Draw a picture showing a solar eclipse.
Upload your answers to the experiment questions and your drawings of a lunar and solar eclipse. Be sure to answer every question and use complete sentences.
Which eclipse was modeled when the large ball was between the small ball and the light?
The model is a "Lunar Eclipse" (If it was talking about the earth, then yes, it is a lunar eclipse).
Which eclipse was modeled when the small ball was between the large ball and the light?
The model is a "Solar Eclipse".
What does the large ball represent?
The earth.
What does the small ball represent?
The moon.
What does the light source represent?
The sun.
Hope this helps!~ <3
(I can't draw so sorry.)
PLZ HELP
Explain why higher temperature in a substance does not mean the substance has more thermal energy?
Answer:
Temperature is the average kinetic energy of particles of an object. Warmer objects have faster particles and higher temperatures.
Explanation:
If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature is measured with a thermometer.
help please
Determine whether each action will increase or reduce soil erosion.
cattle grazing
contour plowing
deforestation
hydroseeding
planting vegetation
sort into the catigories
Increse soil erosion or reduse soil erosion
Answer:a
Explanation:
HELP PLS PLEASSEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Match each type of chemical bond with its properties. Drag the items
rect location on the right.
covalent bond
crystalline
metallic bond
ductile
ionic bond
poor thermal conductivity
molecular compounds
hard and brittle
electron sea model
Answer[tex]__________ is a set of _____ or combination of __________ alleles responsible for an _________ of a trait.[/tex]:
Explanation:
The bonds are formed by the valence electron of the atom. The covalent bonds show poor thermal conductivity and are hard and brittle substances. Thus, options 1. c and e, 2. b and f, 3. a and d are correct.
What are chemical bonds?Chemical bonds are the linkages formed between the atoms of the same or different element by transfer, sharing, and moving electrons of the valence shell of the orbital.
The covalent bonds are formed by sharing the valence electron with the atoms that look hard and brittle and are poor thermal conductors. Thus, options c and e are correct.
The metallic bonds, on the other hand, are formed by the free movement of the electrons in the structures that are ductile and are represented by the electron sea model. Thus, options b and f are correct.
Lastly, the ionic bonds are created by the transfer of the valence electron from one to another atom. They form crystalline structures and molecular compounds with cations and anions in them. Thus, options a and d are correct.
Learn more about chemical bonds, here:
https://brainly.com/question/7173348
#SPJ2
Kiley wants to balance the equation H2 + N2 → NH3. Which would be her first step in balancing an equation?
Answer: The balanced equation will be
6H2 + N2 → 2NH3
Explanation:
First step is to balance nitrogen
ie, H2 + N2 → 2NH3
Second step is to balance hydrogen accordingly
ie, 6H2 + N2 → 2NH3
This is the perfect balanced equation.
Answer:
c
Explanation:
c
screen shot attached please help fast i will give brainliest
__________ is an organism’s __________ or physical traits which is _________ by __________. Example: _______ _______, detached earlobes
PLSSS ANSWER ASAP I BEG PLAEASEEE
Answer:
.
Explanation:
An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the table would you find this element?
Select one:
3
4
1
2
Answer:
you would find it in section 3 as these are semi-metals
Explanation:
Answer:
The answer is where the metalloids are located
Explanation:
At the atomic level, are synthetic medicines different from natural medicines? Explain your answer.
Answer:
Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.
(It's on quizlet btw)
Answer:
Although herbal medicines are less potent in comparison to synthetic drugs in some cases but still these are consider less toxic or having less side effect in contrast to synthetic drugs. The ultimate norm for any medicine (human made or natural) is their non-toxicity, effectiveness, specificity, stability and potency.
Explanation:
help me please with the connect it :,)
1. Potential
2. Potential
3. Potential
4. Kinetic
5. Kinetic (not sure)
6. Potential
7. KInetic
8. Potential
9. Kinetic
10. KInetic
11. Potential
12. Potential
A prospector pans for gold in a stream.
Which term best describes what is in his pan when he scoops up part of the stream bed?
mixture
pure substance
compound
element
Answer:
Mixture
Explanation:
When a prospector scoops up part of the stream bed, the pan contains stream sediments.
The term that best describes what is in his pan when he scoops up part of the stream bed is the mixture. Thus, the correct option for this question is A.
What is a Stream bed?A stream bed may be defined as the strait extremity of a stream or river through which the physical confine of the normal water flow. It is a type of channel significantly occupied by a stream.
According to the context of this question, when a prospector scoops up part of the stream bed, the pan contains stream sediments, which implies that the mixture contains stream sediments or contamination.
Therefore, the mixture is the term that best describes what is in his pan when he scoops up part of the stream bed. Thus, the correct option for this question is A.
To learn more about Stream bed, refer to the link:
https://brainly.com/question/17751093
#SPJ2
what type of atmospheric conditions does weather describes
Answer:
humidity, air temperature and pressure, wind speed and direction, cloud cover and type, and the amount and form of precipitation,
Explain the energy transformation that occurs when food is digested.
Group of answer choices
Electrical energy transforms into mechanical energy.
Chemical energy transforms into mechanical energy.
Mechanical energy transforms into chemical energy.
Thermal energy transforms into electrical energy.
Answer:
C. Mechanical energy transforms into chemical energy.
Explanation:
Mechanical energy is used to chew the food, which is made up of chemical bonds. When we chew, those bonds break, releasing chemical energy that we utilize and consume.
Hope this helped. Have a nice day.
