Answer:
11 is the atomic number of alkali metal
Explanation:
The Group 1 elements are called the alkali metals. ... All the Group 1 elements are very reactive . They must be stored under oil to keep air and water away from them. Group 1 elements form alkaline solutions when they react with water, which is why they are called alkali metals.
1. Why is it important to take the temperature of the closed system(the box) and the ice water
before we start the demonstration?
It is important to take the temperature of your materials before you begin a demonstration so you can see the change in particle movement as you do the demonstration or after you finish.
In the early 1900s, Ernest Rutherford set up an experiment to study the atom. He bombarded thin metal sheets with protons and neutrons. He found that most of particles got deflected a bit, but some of them bounced back as if bouncing off a brick wall. What conclusion came from this experiment?
Answer:
Atoms are mostly empty space.
How does water move between the hydrosphere
Answer:
Water moves through the hydrosphere in a cycle. Water collects in clouds, then falls to Earth in the form of rain or snow.
Answer:
Water moves through the hydrosphere in a cycle.
Explanation:
Hope it helps.
Except for the bolt, note the difference between the calculated volumes and the volume found by the displacement method. Which method is more accurate? Why?
Answer:
See explanation
Explanation:
The most accurate method of determining the volume of an object, is the water displacement method. It has the peculiar advantage of working well with irregular solids.
There are often errors that prevent exact measurements of the volume of objects. This makes the water displacement method a preferred and easier method of determining the volume of an object.
What words come to mind when you hear the word Philosophy?
Answer:
The words I think of when I hear philosophies are knowledge and reasoning.
Explanation:
So, if you have seen other responses, you would see "love of wisdom." But, there is more to it. When someone says the philosophy usually, someone would think of knowledge or reasoning. When you reason, you reflect, learn, and form opinions using methods of philosophy. So when doing this, you can reason with someone. You could also have "reasoning" with an object or when having a conversation.
You can have an emphasis and an impact when knowing, supported with reasoning. Even though the definition of wisdom, the quality of having expertise, "knowledge" and good judgment; the quality of being wise, wisdom arises from wise-dom, and which is a synonym to philosophy. When your wise and have "knowledge" you, "know something."
When you think of philosophy, the study of the intellectual foundation of a department of knowledge or expertise, you assume that it's wise, or wise-dom, but no. Love of wisdom originates from, "The feeling of love in being wise." As a result, you could tell that philosophy is the love of being wise. Being wise has a reasoning behind it. There is a reason to be wise. People want to be smart and be intelligent for a reason. You want to be a unique person and want to have a justification in a section of experience.
When thinking of it, it's like you are studying knowledge. You are not practicing wisdom. You can't practice being a wise person. It comes with being a Christian or being in that culture, or whatsoever. But you can study knowledge. Each mindset comes with being or "knowing" something. When thinking about each decision, you have to have reasoning behind it.
So, when you consider philosophy, think of "the" philosophy, the roots of it. You have to have a reason to back it up, with reasoning and details. You become a person who displays knowledge. You do not show wisdom through a philosophy. With being wise, you only know certain things. With the information, you know it all. With reasons you don't just have back up you have everything.
How many electrons will a neon (Ne) atom have when it has no charge?
Answer:
hope it helps you
Explanation:
Once one shell is full, the next electron that is added has to move to the next shell. So... for the element of NEON, you already know that the atomic number tells you the number of electrons. That means there are 10 electrons in a neon atom.
The number of protons in one atom of an element determines the atom’s?
The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge. The atomic number tells you the number of protons in one atom of an element. It also tells you the number of electrons in a neutral atom of that element.
The number of protons in one atom of an element determines the atom’s atomic number.
What is atomic number?The atomic number is the number of protons present basically in an atom's nucleus. The number of protons characterize the individuality of an element i.e., an element with 6 protons is a carbon atom, no matter however many neutrons may be prevalent.
The mass number of an element is determined by the number of protons and neutrons combined: mass number = protons + neutrons.
To determine the number of neutrons in an atom, subtract the number of protons, or atomic number, from the mass number.
The atomic number is the number of protons in a nucleus that always equals the number of electrons in orbit around that nucleus (in a nonionized atom).
Thus, it can be concluded that the atomic number is determined by the number of protons in atom.
For more details regarding atomic number, visit:
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which is a mixture?
a. Red and blue marbles in the same container
b. A tin can that cannot be broken down into Simpler substances
c. A piece of iron reacting chemically with oxygen
d. hydrogen and oxygen atoms forming a molecule
Answer:
A-Red and blue marbles in the same container.
Explanation:
(Apex)
PLEASE HELP ! (PICTURE)❗️
Answer:
si
Explanation:
How is burning methane similar to burning magnesium?
How are the particles of matter affect its states as to solid, liquid and gas?
Explanation: In solids, the particles are tightly packed together. In liquids, the particles have more movement, while in gases, they are spread out. Particles in chemistry can be atoms, ions or molecules. It is important to understand the particle nature of matter.
how many elements are in c6h12o6
When a police officer is trying to decide if a driver is speeding, what is his point of reference?a. The ground b. His car c. The speed limit d. All of the above
Answer:
C. The speed limit.
Explanation:
If the car was the point of reference then he would be looking at his car not the speed the car is going. If the ground was the reference then he would be looking at the ground and not how fast the car is going. So that means that the officer is determining how fast the car is going compared to the speed limit.
How many moles would there be in 1.5x10^24 molecules of water?
Answer:
5.85 moles
Explanation:
Moles in (3.52 X 10^24) molecules of water. 3.52 x 10^24 molecules x `1mol/6.02 x 10^23 molecules = 5.85 moles of H2O.
PLEASE HELP ME . what is frequency of a photon with an energy of 5.75 x 10^-19
Answer:
So:
Explanation:
We have the formula E = hf where R is the energy, h is planck's constant, and f is the frequency. (Planck's constant is about 6.62607004 × 10-34 m2 kg / s). We can put this into the formula to get the frequency equal to about 8.678 x 10^14
HEAT ONLY FLOWS UPWARD; TRUE OR FALSE?
Answer:
it would be false. It doesn't only flow upward
Explanation:
does anyone know the answer to this
Answer:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
Explanation:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
A quarterback back pedals 3.3 meters southward and then runs 5.7 meters northward
Answer:
if you run backward 3.3 meters then run 5.7 meters the opposite ways then you would have run 2.4 meters then where you started off. I hope this helped.
Explanation:
you'll have a bright future by doing this for me I promise ! and I'll brainlist doesn't have to be perfect drawing:)
Answer:
sound wave
Explanation:
sorry i can't do a detailed light wave but i had the sound one already done for one of my classes so you're in luck!
Malia is interested in observing cognitive development in children and wants to design a study that will allow her to observe small changes in how 6-year-olds learn to solve problems. She plans to collect data from each child every week for three months.
Which design is her best choice?
A] microgenetic
B] cross-sequential
C] cross-sectional
D] longitudinal
Answer: Microgenetic
Explanation: I just took the test :3
Doing science, and having a bit of trouble.
please help
thank you so much!
Gandaki province has high prospect of Tourism in nepal? why
Answer:
Gandaki province is home to various best tourist destinations in Nepal as Gandaki is very rich in natural heritage and cultural diversity. ... Since Gandaki is rich in both culture and natural beauty the province is the most appropriate place for the tourist destinations.
Explanation:
Answer:
Explanation:Gandaki province is home to various best tourist destinations in Nepal as Gandaki is very rich in natural heritage and cultural diversity. ... Since Gandaki is rich in both culture and natural beauty the province is the most appropriate place for the tourist destinations
Why can’t you store a fixed amount of gas in an open container like a glass?
Answer:
Gasoline is very volatile and if not kept in a tightly sealed container will quickly fill a space with vapors at a sufficient concentration to be a fire and explosion hazard. Don't even THINK about keeping gasoline in an open container. Well, you can if it is a dense and heavier-than-air gas.
Explanation:
Living things with fewer than normal helpful bacteria in their guts can become infected more easily
because there is more food and space available for harmful bacteria.
O True
False
Is hydrogen dioxide (water) always produced when an acidic solution is mixed with a basic solution?
Answer:no
Explanation:
An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are _______
Answer:
the number of protons in neutral atom is 8 not sure I did it but I forgot the answer I think that's it
Bored pls talk to me.
my Roblox account name jxal1...........
Explanation:
Jesus Christ had dreads so shake em', I ain't got none but I'm planning on growing some
Answer:
ooo_SoSpooky add me :>
Can someone help me with this please ASAP?
Consider the reactions C2H4(g) + 2O2(g) → 2CO(g) + 2H2O(g) ∆H = −758 kJ mol−1 2C(s) + 2H2(g) → C2H4(g) ∆H = +52 kJ mol−1 H2(g) + O2(g) → H2O(g) ∆H = −242 kJ mol−1 The enthalpy of formation of carbon monoxide is A −111 kJ mol−1 B −163 kJ mol−1 C −222 kJ mol−1 D -464 kJ mol−1
C2H4(g) + 2O2(g) → 2CO(g) + 2H2O(g) ∆H1 = −758 kJ mol−1 ....1)
2C(s) + 2H2(g) → C2H4(g) ∆H2 = +52 kJ mol−1 ....2)
H2(g) + O2(g) → H2O(g) ∆H3 = −242 kJ mol−1 ....3)
Now, enthalpy of formation of carbon monoxide is given by :
∆H = ∆H1 + ∆H2 - ∆H3
∆H = ( -758 + 52 - ( -242 ) ) kJ mol−1
∆H = −464 kJ mol−1
Therefore, the enthalpy of formation of carbon monoxide is -464 kJ mol−1.
Hence, this is the required solution.
Help me please!!!!!!!!?????
Answer:
i believe its A or D
Explanation:
sorry is its wrong
hope it helps