Answer:
ok i will do the instructions
Explanation:
Answer:
Make sure that its an accepted file. If not try to refresh the page.
What type of front is depicted here? (60 Points)
Cold
warm
stationary
Occluded
Answer:
warm
Explanation:
An ion has 56 protons, 54 electrons, and 81 neutrons. What is its atomic #?
Answer:
110.91982
The element is probably Barium
The atomic number of an atom is equal to the number of protons it has. In this case, the ion has 56 protons. Therefore, the atomic number of the ion is 56.
The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei composed of protons and neutrons, this is equal to the proton number (np) or the number of protons found in the nucleus of every atom of that element. The atomic number can be used to uniquely identify ordinary chemical elements. In an ordinary uncharged atom, the atomic number is also equal to the number of electrons.
For an ordinary atom which contains protons, neutrons and electrons, the sum of the atomic number Z and the neutron number N gives the atom's atomic mass number A. As there are 56 protons thus the atomic number of the ion is 56.
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How many Joules of energy are needed melt 40.0 g of ice?
answer: 334 J
explain: A total of 334 J of energy are required to melt 1 g of ice at 0°C, which is called the latent heat of melting.
what is always formed when a strong acid solution reacts with a strong base solution?
Answer:
water and salt
Explanation:
A neutralization reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7.
Hope this helps
PLS MARK BRAINLIEST
Example The anticancer druge cir-platin hydrolysis in with constant 1. Solo - at pH 7:0 and 25°c. calculate the half life of the reaction
Answer:
ganda no beeeeeèeeeeee
Who discovered the proton?
Crookes
Rutherford
Balten
Chadwick
Answer:
Sir James Chadwick discovered proton
Explanation:
Sir James Chadwick, was a British physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932. In 1941, he wrote the final draft of the MAUD Report, which inspired the U.S. government to begin serious atomic bomb research efforts.
in the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams o2?
Explanation:
When 6.38 moles of O2 and 9.15 moles of Al react, the ratio of aluminum to oxygen is 9.15/6.38 = 1.434. This shows that all of the oxygen is consumed before the aluminum and when the reaction ends the reactant aluminum is left. The number of moles of Al2O3 formed is approximately 4.25 moles.
a sample of gold has a mass of 96.5 g and a volume of 5.00 cm3. the density of gold is
Answer:
19.3 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 96.5 g
volume = 5 cm³
We have
[tex]density = \frac{96.5}{5} \\ = 19.3[/tex]
We have the final answer as
19.3 g/cm³Hope this helps you
The atoms of which elements tend to gain electrons? Which tend to lose electrons?
A.Metals tend to lose electrons; nonmetals tend to gain electrons.
B.Metals tend to gain electrons; nonmetals tend to lose electrons.
C.Most metals and nonmetals tend to lose electrons; metalloids tend to gain
electrons.
D.Metals and most nonmetals tend to lose electrons; noble gases tend to gain
electrons.
Answer:
Nonmetals tend to gain electrons and metals tend to lose electrons.
Explanation:
as you move to the right across the periodic table, beginning with group 16, non-metals…
a) lose more electrons
b) gain or share fewer electrons
c) gain or share more electrons
Physical Models Activity (I need help)
You have explored some interesting, informative, and amusing examples of models. Now it's time to get creative and make your own model. Here is the requirement checklist for your model:
✔ Model types can include drawings, diagrams, physical models, virtual simulations, or videos.
✔ Models must be created by you, not something selected from an online or outside source.
✔ Submit a presentation, picture, video, or screenshot of your model.
✔ Submit a one-paragraph summary describing the topic you chose, your model, what it represents, how you made it, and the specific science involved. It is important that you are using science terminology and are accurate.
Now that you know how to create and submit your model, you will need to choose a topic for your model. Choose one of the three topics listed below. Select each topic for an overview.
Conservation of Mass
Atomic Theory
Thermal Energy
The question above wants to assess your ability to create a model to represent a scientific concept. In that case, I can't create the model for you, but I'll show you how to create that template.
First, you must choose one of the topics presented in the question. I suggest that you choose the topic "Conservation of Masses," because of its simplicity, however you should choose the one you are most familiar with.
Next, you should research this topic and look at the factors that make it up.
After that, you can create your template as follows:
Use a software that has ready-made drawings, mainly geometric figures, for you to represent the elements that make up this topic.Use these drawings to represent these elements, place titles that identify them, and add arrows, which direct the viewer's attention to understand the model.You can see examples of "Conservation of Masses," models in the attached figure.
More information:
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solar powered cars use energy use energy form the sun to work. a panel on the car absorbs light energy from the sun, which then generates a electric current. this electric current, in turn allows this car to move. which shows the correct order of energy transformations that take place in a solar-powered car? A. electrical, chemical, kinetic B. electrical, kinetic, radiant C. radiant, chemical, electrical D. radiant, electrical, mechanical. i will brainliest to fastest answer
Answer:
The answer is
D)
radiant, electrical, mechanical
Explanation:
How many grams of H2O is needed to produce 0.75 moles of ?
Answer:
H2O2 + H2S → 2H2O + S? that is the answer
Select the reactants of photosynthesis
Can someone solve this question? I'll give brainliest and more points.
Answer:
When a substance undergoes a chemical change it is no longer the same but a burning substance.
Explanation:
That is the correct answer.
Do gasses have a fixed volume
Answer:
No
Explanation: Gases have no fixed volume and no fixed shape. Gases expand to fill the space available. They can also be compressed into a very small space.
What is the weighted average of lemonas if 80% are the GX model (4,000 lbs) and 20% are
the GXL model (5,000 lbs)?
Answer:
4200
Explanation:
4,000 * .8 + 5,000 * .2
The weighted average of lemonas with 80% GX model and 20 % GXL model is calculated using their mass percent and it is 4200.
What is weighted average?
The weighted average is different from the normal average we use in maths. Let's X and Y be two number and their average be x+ y/2. That is the arithmetic mean.
The weighted average of lemonas is similar to the atomic weight of an element calculated from ist two isotopes where, the percentage abundance in earth and the mass of isotopes if given the weighted average is calculated as follows:
weighted average = % abundance / 100 × mass of isotope 1 + % abundance / 100 × mass of isotope 2
In a similar way, the weighted average of lemonas of GX and GXL model is calculated as follows:
weighted average = ( 4000 lbs ×80/100 ) + ( 5000 lbs ×20/100)
= 4200 lbs.
Hence, the weighted average of lemonas if 80% are the GX model (4,000 lbs) and 20% are the GXL model is 4200 lbs.
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While Brian was cutting the end of the rubber tube, during chemistry lab, he accidently cut his finger. It was a minor cut and hardly any blood was visible. Brian should __________
a. tell his teacher immediately and do as directed.
b. go to the sink and wash his hand with soap and water.
c. place a towel over the wound and keep working.
d. continue working because he is ok.
Answer:
A because even if its a minor cut, it's always a better choice to inform someone.
how much further apart are water vapor molecules compared to liquid water molecules?
Answer:
At 100 °C (the boiling point of water at standard atmospheric pressure), water molecules in the liquid state have a density of 0.9584 g/cm3. This means that there are 3.21 × 1022 water molecules packed into 1 cm3 and the average distance between water molecules is 3.91 × 10-8 cm.
This is what I found. Hope it helps!
what are the conditions from our notes that affect natural Selection?
Answer:
Conditions that affect natural selection are reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
How do two hydrogen atoms bond to form a molecule?
1 each hydrogen atom shares an electron to form a covalent bond
2 each hydrogen atom transfers an electron to form an ionic bond
Answer:
1: each hydrogen atom shares an electron to form a covalent bond
Explanation:
I took the quiz and this was correct!
Read the article by Michael Fumento, writer for the New York Post editorial blog, who does not support global warming.
Back in 2005 I and others reviewed the entire hurricane record, which goes back over a century, and found no increase of any kind. Yes, we sometimes get bad storms—but no frequently now than in the past. The advocates simply ignored that evidence.
Fact is, the earth was cooling and warming long before greenhouse gases could have been a factor. The [global warming supporters] have been proved wrong time and time again.
Which best describes the reliability of the source?
Nationally certified organizations are considered an unreliable source because the public can access their information.
Charities are considered a reliable source because the public makes financial contributions to them.
Editorial blogs are considered an unreliable source because the author may not have a science background.
Editorial blogs are considered a reliable source because authors contribute to them regularly.
The editorial blogs are considered an unreliable source because the author may not have a science background. Option C
What the reliability of a source?We know that not all sources of information could be taken to be reliable. A source of information could come across as being reliable when the source is an authority in the area in which the information is furnished.
Such authorities often publish authentic and verified information in reputable journal that are meant for professional consumption.
Thus, the editorial blogs are considered an unreliable source because the author may not have a science background.
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Please DO NOT ANSWER if you don't know and don't copy and paste from the internet
which is stronger, ionic bonding or covalent bonding? and why
I think so the answer would be Ionic Bonding
Im not sure
Answer:
ionic bonding because of the coulombic attraction between ions of opposite charges.
Determine mass contribution for the following isotopes of the same element.
At the end, tell me the atomic mass of the element using the mass contributions.
Do not forget your units or the question will be marked incorrect.
Isotope 2 amu: 186.956
percent abundance: 62.6%
Atomic Mass of the element ?
Answer: Not possible to find average amu with only the information provided.
Explanation:
Is there more information about the other isotopes? I don't see how one could calculate an overall atomic mass with only one isotope is known. An isotope of 186.956 with abundance of 62.6% isn't enough information. We're not told anything about the other isotopes: are they larger, smaller, and at what percentage. If one has an amu of 204.956 at 37.4%, the overall atomic mass would be quite different than if it had an atomic mass of 182.956 at 37.4%. More infornmation is required.
What did Thomson contribute to atomic theory?
A. The discovery that positive charge is concentrated in a core, or nucleus
B. The discovery that negative charge is concentrated in a core, or nucleus
C. The discovery of negatively charged particles, now called electrons
D. The idea that electrons have quantized amounts of energy
what is the formula of the ionic compound that forms from gallium and chlorine?
Answer:
GaCl3
Explanation:
Gallium trichloride | GaCl3 |
Answer:
GaCl3
Explanation:
Can someone help me with this
Answer: It would be malleable, solids, luster, conductors, reactive
Explanation:
The reaction between sodium and water releases a lot of energy to the
surroundings. What type of process is this?
Answer:
an exothermic reaction i think
Explanation:
An element in group 2 will form ionic bonds and with
Answer:
With an element from group 16
Explanation:
Because the elements from group 2 have 2 valence electrons, and the elements from group 16 need to get more 2 electrons to get stable
Someone pls help me I will mark you as brain
Answer:
Chlorination
Explanation:
"Exposure to high volumes of chlorine gas fumes can cause serious health problems, including death."
https://water.mecc.edu/courses/ENV211/lesson14_print.htm
:)