Answer:
FALSE
Explanation:
In a model of an atom, where would I find a valence electron
Help
Animal and plant cells all have the following organelles
Question 5 options:
Cytoplasm, cell membrane, nucleus and chloroplast
Cell wall, nucleus, ribosomes, chloroplast
Cell membrane, cytoplasm, nucleus, mitochondria
Cell wall, vacuole, nucleus, cell membrane
Answer: C
Explanation: They both contain membrane-bound organelles such as the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes.
what can corrosive do to skin
Explanation:
acid
................
Answer :
Corrosive can causes severe damage to the skin. It can result in a chemical burn Skin scarring Some corrosives can eat flesh
On July 8th, I will be 8.51472x10^8 seconds old. How old will I be in years? (Assume 365 days in a year.) Group of answer choices
Answer:
26.98
almost 27 years
An increase in pressure increasing the boiling point of a liquid is an example of a —
A physical change
B chemical change
C physical property
D chemical property
Answer:
Ans. C. physical change
Explanation:
Physical: boiling and melting are physical changes. When water boils no bonds are broken or formed
Boiling point refers to the temperature at which the pressure of the liquid (that is being boiled) becomes equal to its surrounding pressure which causes it to change to vapor.
Physical change refers to the changes that occur when the material that is changed is structurally similar both before and after the change.Chemical change occurs when the material is transformed into a different chemical substance.Physical property of a substance refers to those properties of a substance that are measurable and describes the state of a physical system.Chemical property refers to the property of a substance that is observed in a chemical reaction.The increase in pressure with boiling point is an example of the physical property as it shows the physical state of the system.
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Select all that apply.
Which of the following do not illustrate a complete circuit?
A
B
C
D
Answer:
b row 2
Hoped I helped
Answer:
The answer is A and C.
Explanation:
A isn't complete because you need a battery to run energy through the circuit.
C isn't complete because the paper does not carry a current.
Both B and D can because they are conductible materials.
Give an example of a specialized cell
Answer:
nerve cells, blood cells, and reproductive cells would all be examples
Explain why the liquid in a thermometer expands as temperature increases. How is this related to the kinetic energy of the particles that make up the liquid?
Answer:
Beacuse of the oxygen in the water
Explanation:
Which of the following statements is true?
Plasma can be found in lightning and stars.
Liquids have a fixed shape but a variable volume.
Bose-Einstein condensates form at very high temperatures.
All of the above.
Answer:
Plasma can be found in lightning and stars.
Explanation:
Plasma is a state of matter that lacks a fixed volume and a fixed shape and consists of charged particles called ions. The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights.
The true statement is: Plasma can be found in lightning and stars and the correct option is option 1.
Plasma is the fourth state of matter, distinct from solid, liquid, and gas. It is an ionized gas consisting of a mixture of positively charged ions and free electrons. In this state, atoms have lost some of their electrons due to high temperatures or strong electromagnetic fields. This creates a highly conductive and energetic environment where particles move freely and interact with electromagnetic forces.
Plasma is commonly found in high-temperature environments like stars, lightning, and fluorescent light tubes. It also plays a crucial role in various industrial and technological applications, such as plasma TVs, fusion reactors, and certain medical treatments.
Thus, the ideal selection is option 1.
Learn more about Plasma, here:
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what is common to nuclear fission?
Answer:
235 U ( the isotope of uranium with mass number 235) and 239Pu(the isotope of plutonium with mass number 239
Explanation:
mmmmmmmmm
Jack walks outside in the afternoon and noticed the clouds are very dark. He states that it looks like it will rain very soon. His statement can be classified as A) prediction B) observation C) inference D) hypothesis
Answer:
I think it would be A but it might be B please tell if wrong
Answer:
A prediction
Explanation:
A prediction, or forecast, is a statement about a future event. They are often, but not always, based upon experience or knowledge and jack is using his knowledge on clouds to predict when it is going to rain.
Which of these civilizations still has strong cultural and religious ties to their star
knowledge?
A. Greece
B. Western Europe
C. Egypt
D. D/Lakota
Answer:
In the 2nd millennium, the eastern coastlines of the Mediterranean are dominated by the Hittite and Egyptian empires, competing for control over the city states in the Levant (Canaan)
Explanation:
because it is
Please help ASAP pleas help right answer please
PLS DO ALL PLS
8.264 g - 7.8 g =
10.4168 m - 6.0 m =
1.31 cm x 2.3 cm =
5.7621 m x 6.201 m =
20.2 cm : 7.41 s =
40.002 g : 13.000005 g =
20.33 x 9.80 =
2.5/2=
Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of the atom, but they are not in the correct order. An image at the left labeled W with overlapping red and blue balls in the center with a circular fuzzy green cloud outside them. An image at center-left labeled X with a purple ball in the center surrounded by overlapping concentric black ovals, each with a small green ball on each of the 6 ovals. An image at center right labeled Y with a large black cross in a purple circle with a black line around the purple, with 10 small green balls dispersed within the purple circle. An image at right labeled Z with a purple center outlined in black with two concentric black circles around the center, the inner circle having 2 small green balls on it and the outer circle having 8 small green balls on it. In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one? A. Y, X, Z, W B. Y, Z, W, X C. W, Z, X, Y D. W, Y, Z, X
Answer:
the answer is A. Y, X, Z, W
Explanation:
I took the test
Answer:
a, y, x, z, w
Explanation:
Explanation:
which is heavier gold (Au) or Silver (Ag)
Answer: Gold
Explanation: gold has a density of 19.32 g/cm3 where silver has a density of only 10.49 g/cm3
On a number line, suppose the coordinate of A is 0, and ARequals5. What are the possible coordinates of the midpoint of AR overbar? The possible coordinates for midpoints of the segment are nothing. (Type integers or decimals. Use a comma to separate answers as needed.)
Answer:
2.5, - 2.5
Explanation:
Given that :
Coordinate of A = 0
and AR = 5 ; distance between A and R
Possible. Coordinate of the midpoint of AR overbar.
Hence for a distance of 5 points between A and R, then R may be located 5 points either side of A, that is to the left of right.
Kindly check attached picture for detailed workings
What are the units for measuring the mass of a regular object?
Answer:
Mass is used to measure the weight of an object. For example, you are measuring the mass of your body when you step on to a scale. In the metric system of measurement, the most common units of mass are the gram and kilogram.
Explanation:
Which stage of the scientific process enables a scientist to check the work of other
scientists?
classifying
O concluding
hypothesizing
O communicating
Answer:
The answer to this would be communicating.
Explanation:
A scientist would be communicating to his or her fellow colleagues and sharing to them his or her idea.
Hope you find this answer helpful! :)
Answer:
Communicating
Explanation:
what is the oxidation number of kmno4
with explanation
What is the wavelength of waves that have a frequency of 2.20 x 10 −4 Hz
Answer:
1.36 x 10^12 m
Explanation:
This is because the equation for wavelength is a modification of c = λf.
c is the speed of light, which is 3.00 x 10^8 m/s
2.20 x 10^-4 Hz is the frequency (f)
so to find λ, which is the wavelength, you would have to divide c by f. You would write it out like 3.00 x 10^8 m/s divided by 2.20 x 10^-4 1/s (Hz is a unit whose time is measured in seconds). The s would cancel out, you would divide 3.00 by 2.20, and you would apply the rule of exponents to the 10^8 power divided by 10^-4 for 10^12 power because the -4 is the denominator, and because it is negative, instead of subtracting the exponent you would add it
Can someone please help me, Ty!
What force opposes gravity and keeps objects from falling to the center of
the earth?
La fuerza de la gravedad depende de la masa (el peso) de cada objeto. La fuerza con que se atraen dos objetos es proporcional a su masa y disminuye rápidamente en el momento en que los separamos. De hecho, nosotros también atraemos objetos con ‘nuestra’ fuerza gravitatoria, pero pesamos tan poco que no podemos percibirlo. En cambio, el Sol es tan grande que es capaz de mantenernos girando a su alrededor a pesar de estar muy lejos. La Luna también ejerce su propia fuerza gravitatoria, pero, como es más pequeña y ligera que la Tierra, si nos pesásemos sobre su superficie veríamos que pesamos unas seis veces menos que en la Tierra.
Podríamos preguntarnos por qué la Luna no cae sobre la Tierra al igual que una manzana cae del árbol. La razón es que nuestro satélite nunca está quieto. Se mueve constantemente a nuestro alrededor. Sin la fuerza de atracción terrestre, se alejaría flotando en el espacio. Gracias a esta combinación de velocidad y distancia de nuestro planeta, la Luna siempre está en equilibrio, ni cae ni se aleja. Si se moviera más rápido, se alejaría, si se moviera con más lentitud, ¡caería!
Hemos dicho que la fuerza de la gravedad también depende de la distancia. Si nos alejásemos lo suficiente de la Tierra, escaparíamos a su fuerza de atracción. Y eso es lo que tratamos de hacer con las naves espaciales. Necesitamos superar la llamada ‘velocidad de escape’, que es aproximadamente 11,2 km/s (a esa velocidad, podríamos viajar de Londres a Nueva York ¡en tan solo 10 minutos!). Cuando un cohete alcanza esa velocidad, ya es libre para viajar por el sistema solar.
Dentro de una nave en órbita, no sentimos la fuerza de la gravedad terrestre. Los objetos no caen, sino que flotan, así que si saltas, no regresas al suelo. Es lo que les ocurre a los astronautas cuando están a bordo de una estación espacial que orbita alrededor de la Tierra.
Balance the equation by filling in the coefficients.
o C₂HG+
O2-0 CO₂ + H₂O
Answer:
4CHO + 3O2 → 4CO2 + 2H2O
Explanation:
4CHO + 3O2 → 4CO2 + 2H2O
Not sure how to explain but I hope this helps :)
What was the commonality between Becquerel and the Curies in terms of their work? polonium radium uranium cesium
Answer:
uranium
Explanation:
Answer:
it is c on edge 2021
Explanation:
Explain why the boiling point of ethanol is higher than that of hexane
(Relative molecular mass of ethanol is 46 while that of hexane is 86)
The boiling point of ethanol is higher than hexane as ethanol has the presence of strong intermolecular forces.
The boiling point has been the temperature required by the substances for converting from liquids to gases. The boiling point of a substance has been based on the intermolecular forces present in the compound.
The stronger the intermolecular force, the higher will be the energy required for the conversion of the body, and the higher will be the boiling point.
The intermolecular force present in the hexane is hydrogen bonding. The force present in ethanol has been a strong van der wall force with hydrogen bonding.
The intermolecular force in ethanol is stronger than the hexane, thus ethanol has a higher boiling point than hexane.
For more information about boiling point, refer to the link:
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when trained teams and consumers are consulted for feedback before, during, and after a food product is developed this is referred to as
Answer:
I believe the answer is a review
Explanation:
When you give them feedback it would be a review for other people to see.
Have a great day.
1. How is mass number, Atomic number, number of neutron, proton and electron related? 2. List down the applications of isotopes.
Answer:
1) Atomic number = number of proton or electrons
Mass number = number of proton or electron + number of neutron
Answer: here your answer
Explanation:
1) Atomic number = number of proton or electrons
Mass number = number of proton or electron + number of neutron
Star in the prime of its life, middle-aged
Answer:
I agree :)
Explanation:
Answer:
Stellar evolution is the process by which a star changes over the course of time. Depending on the mass of the star, its lifetime can range from a few million ... All stars are formed from collapsing clouds of gas and dust,
Explanation:
What were the densities of the materials you chose for the walls and floor for the home in Tiny World?
Answer:
Explanation:
The answer is clay brick
Explanation: the clay brick keeps it cooler also it keeps it firm.
Hope this helps :)
