Answer:
False.
Explanation:
If the gas is leaving it cannot have higher pressure.
PLEZ HELP QUICKLY!!!! ILL MARK BRAINLIEST
Option B, P and Cl
They form covalent bond
Which best describes a chemical reaction that follows the law of conservation of matter?
Group of answer choices
A. The reactants have the same mass as the products.
B. The reactants have the same density as the products.
C. The products conserve all chemical properties of the reactants.
D. The products conserve all physical properties of the reactants.
What is the Albedo of Earth?
Group of answer choices
The energy that is absorbed into Earth.
The energy that is reflected back into space from Earth.
Just a cool word.
Minion talk for energy.
SCIENCE
6TH GRADE
BRAINLIEST!!
Answer: Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. A sensor aboard NASA's Terra satellite is now collecting detailed measurements of how much sunlight the earth's surface reflects back up into the atmosphere.
Explanation: ik im annoying thanks
When all the values in a data set are written in order from least to greatest, the value that is in the middle, wth an equal number of values below it and equal number of values above it, is called the Omedian O mean O mode Orange
Option A, median is the correct answer
What is the density of an object of an object having a mass of 6.0 grams and a volume of 35 cm3?
Answer:
0.17 ( 2 s.f.)
Explanation:
d=m/v
=6/35
=0.1714285
=0.17
Answer:
Hey bro
Explanation:
I don't like boys and the answer most definitely is 69
This is not a multiple choice question
What are the characteristics of an experiment? What are key parts of an experiment?
Answer:
independent variable - the thing you change
dependent variable - the thing you measure
control variables - the things you keep the same
Explain the similarities and differences between combination, decomposition,
and replacement reactions.
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What do phytoplankton do for the carbon cycle? Choose all that apply.
A. They take in oxygen for photosynthesis.
B. They take in carbon dioxide for photosynthesis.
C. When they die, the carbon left in them can be sequestered (stored) in the ocean bottom.
D. They are food for many animals, including some whales.
How do the scientists Mendeleev and Moseley differ on their arrangement for the periodic table? A) Their periodic table was arranged the same. B) Moseley arranged the elements based on atomic masses while Mendeleev arranged the elements based on atomic number. C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses. D) Moseley arranged the elements based on the number of protons while Mendeleev arranged the elements based on x-ray frequency.
Answer:
C is correct
Explanation:
the person above me is also correct hope this helps
The key difference between Dmitri Mendeleev and Henry Moseley's periodic table arrangements lies in the fundamental basis of their organization: C) Moseley arranged the elements based on atomic numbers while Mendeleev arranged the elements based on atomic masses.
Dmitri Mendeleev (1869): Mendeleev's periodic table was the first successful attempt at organizing the elements. He arranged the elements in order of increasing atomic masses and grouped them based on their chemical properties. Mendeleev's periodic table also left gaps for elements that were yet to be discovered, predicting their properties based on the trends of the known elements.
Henry Moseley (1913): Moseley's contribution to the periodic table was the realization that the atomic number (number of protons in the nucleus of an atom) was a more fundamental property than atomic mass. Moseley proposed that the periodic table should be arranged based on increasing atomic numbers rather than atomic masses. This arrangement resulted in a more accurate and systematic organization of the elements.
Learn more about atomic masses from the link given below.
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pls help asap !! unsure how to do this
I NEED HELP FAST
complex conversions between units may require using __________ conversion factor
Answer:
More than one
Explanation:
Answer:
More than one
Explanation:
Quizlet says so
A ____ is a region of strong magnetic activity on the photosphere the Sun.
(A) sunspot
(B) flare
(C) Coronal mass ejection
(D) Solar wind
write the electronic configuration of oxygen on the basis of sub shell.
Answer:
[He] 2s² 2p⁴
Explanation:
If you're looking for the answer in subshell form, here it is:
[tex]1sx^{2} 2sx^{2} px^{4} (2.6)[/tex]
Quote:
"Where I walk, I walk alone. Where I fight, I fight alone."
- Akuma
please help me im so lost!
Answer:
An atom consists of a positively charged nucleus, surrounded by one or more negatively charged particles called electrons. The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. ... The nucleus of an atom contains protons and neutrons.
Explanation:
i'm smart you are too in your own way.
How many protons, neutrons, and electrons does the atom above have?
-12 protons, 7 neutrons, 1 electron
-7 protons, 12 neutrons, 1 electron
-12 protons, 5 neutrons, 7 electrons
-7 protons, 5 neutrons, 8 electrons
-7 protons, 5 neutrons, 1 electron
-7 protons, 12 neutrons, 8 electrons
-5 protons, 7 neutrons, 8 electrons
Answer:
Nitrogen has 7 protons, 7 neutrons, and 7 electrons.
So, I'm not entirely sure about the choices you provided :)
Why would heating up the human body be a bad choice for causing a chemical reaction?
Answer:
Explained below
Explanation:
The human body has a normal core temperature of around 37°C to 38°C.
Now, if it is heated up to say 39° to 40°C, fatigue will start to set in and the brain begins to tell the muscles to slow down.
If it's now heated to higher temperatures above above 41°C, the body will begin to experience heat exhaustion and therefore will start to shut down.
Due to this process, the body can't even sweat at that stage because blood flow to the skin will stops thereby making the body feel cold and clammy. Thus, chemical processes/reaction in the body will begin to be affected and the cells inside the body will start to deteriorate and thus there is now a huge risk of having multiple organ failure.
Perform each of the following operations as indicated. Express your answers to the correct number of significant figures and unit.
1. 5 x 10–7 kg + 3 x 10–7 kg
2. 4 x 105 kg + 6 x 105 kg
3. 1.66 x 1019 kg + 2.30 x 1019 kg
4. 7.2 x 10–12 kg - 2.6 10–12 kg
5. 3.8 x 10–12 m2 - 1.90 x 10–11 m2
6. 2.26 x 10–18 m2 - 1.8 x 10–18 m2
5. How can you use the periodic table to help predict the types of bonds elements will form?
4. The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed?
A. 25 g
B. 50 g
C. 75 g
D. 100 g
Identify the atom below.
The answer is He!
Hope this helps ya out
What happens to an atom if it loses an electron?
Answer:
When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons. In the opposite case when an atom gains electron(s) it becomes negatively charged (more electrons than protons).
Explanation:
Please help it’s due today, I will give brainliest
the two middle ones is the answer
Boron
B
10.811
Number of neutrons
Answer:
6
Explanation:
To determine the number of neutrons we round 10.8 to 11 and subtract the atomic number (5) and get 6; therefore, boron has 6 neutrons.
Find the average atomic mass of Boron.
Boron comes in two isotopes, Boron-10 and Boron-11. Boron-10 has an exact mass of 10.01294 and has a percent abundance of 19.83%. Boron-11 has an exact mass of 11.00931 and a percent abundance of 80.17%.
Answer:
12
Explanation:
Answer:
11.01
Explanation:
just did the assignment :D
Which of the following is the correct Lewis Dot Structure for MgBr2?
PHOTO ABOVE
Answer:
Option A
Explanation:
To know the correct answer to the question, let us write an equation illustrating the formation of MgBr₂.
This is illustrated below:
1. Magnesium (Mg) is divalent element hence it will lose 2 electrons to form magnesium ion (Mg²⁺) as shown below
Mg —> Mg²⁺ + 2e¯
2. Bromine (Br) is a univalent element. Two bromine atom will receive the two electrons (i.e each atom receives 1 electron) to form the bromide ion (Br¯) as shown below:
2Br + 2e¯ —> 2Br¯
Combine both equation
Mg + 2Br + 2e¯—> Mg²⁺ + 2e¯ + 2Br¯
Cancel out 2e¯
Mg + 2Br —> Mg²⁺ + 2Br¯
Thus we have
Br—Mg—Br
From the illustration made above, we can see that two bromine atom is receiving 1 electron each from the magnesium atom
A B C The circles shown above represent three different elements. The six images below are mixtures, how many of the images represent homogeneous mixtures.
edit; found the answer, since no one answered is: 2. for anyone wondering.
Answer: 2
Explanation:
how many atoms does a gold bar and gold nuggets contain
Answer:
The answer is 1
Explanation:
Gold is gold, the size doesn't change what it is.
Whose personal story did you read (if you read several, pick your favorite)? What was the most interesting or eye-opening part of that person's story?
Which substance is a strong electrolyte?
O NH3
O Ba(OH)2
O C12H22011
O CH3COOH
Answer:
Ba(OH)2 is a strong base, so it conducts electricity well
Explanation:
The dissociation of a strong electrolyte is apparent by its reaction arrow, which only points toward products. In contrast, the reaction arrow of weak electrolytes points in both directions. The general form of the strong electrolyte equation is: Strong acids, strong bases, and ionic salts that are not weak acids or bases are strong electrolytes.
X NH3 is a weak base
X C12H22011 is neutral (not an acid or a base), therefore it a nonelectrolyte
X CH3COOH is a weak acid and it also dissociates partially.
The substance which is a strong electrolyte is Ba(OH)₂.
Hence Option (B) is correct answer.
What is Strong electrolyte ?Strong electrolyte can be defined as the substance that completely dissociates in to ions.
Strong electrolyte (aq) → cation⁺ (aq) + anion⁻ (aq)
Now lets check all options one by one
Option (A): NH₃
NH₃ is a weak base. NH₃ does not completely ionize so it is a weak electrolyte.
Hence it is incorrect option.
Option (B): Ba(OH)₂
Ba(OH)₂ is a strong electrolyte because it dissociates completely in water.
Ba(OH)₂ (aq) → Ba⁺² (aq) + 2OH⁻ (aq)
Hence, it is correct option.
Option (C): C₁₂H₂₂O₁₁
C₁₂H₂₂O₁₁ is a non electrolyte that means it does not dissociate into ions.
Hence, it is incorrect option.
Option (D): CH₃COOH
CH₃COOH is a weak electrolyte due to the presence of lowest number of ions it does not dissociate. It's ionization is very less.
Hence, it is incorrect option.
Thus, from the above conclusion we can say that The substance which is a strong electrolyte is Ba(OH)₂.
Hence Option (B) is correct answer.
Learn more about the Strong electrolyte here: https://brainly.com/question/2285692
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