Answers
Answer:
I'm pretty sure that it's lithium because it gives up one of their 3 electrons, so li
Related Questions
PLEASE HELO DOES ANYONE KNOW THE RIGHT ANSWER ??
Answers
Answer:
the last one because matter is the amount of space
describe what happens when atoms release light?
Answers
Answer:
hi
Explanation:
Light is the result of electrons moving between defined energy levels in an atom, called shells.
Stem cells can differentiate into how many types of body cells?
Answers
How does temperature affect the spontaneity of a reaction?
A. Increasing the temperature always makes a reaction less likely to
be spontaneous
B. Increasing the temperature will not affect the spontaneity of a
reaction.
C. Increasing the temperature always makes a reaction more likely to
be spontaneous.
D. Increasing the temperature makes a reaction spontaneous in
some situations.
Answers
Answer:
D
Explanation:
took the test
The statement 'increasing the temperature makes a reaction spontaneous in some situations' indicates how temperature affects the spontaneity of a reaction.
What is a chemical reaction?A chemical reaction is a given process in which one or more reactants are converted into different products.
A chemical reaction is composed of catalysts such as enzymes that speed up its velocity.Temperature represents a fundamental variable in a chemical reaction.In conclusion, the statement 'increasing the temperature makes a reaction spontaneous in some situations' indicates how temperature affects the spontaneity of a reaction.
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Which statement best describes how an existing theory is often affected by the development of new technology?
An existing theory is thrown out and replaced with a completely new theory based on the new observations.
An existing theory is modified so that it can explain both the old and new observations.
An existing theory remains the same because a theory is a proven fact that is always true.
An existing theory is kept unchanged while a new theory is developed to explain the new observations.
Answers
Answer: An existing theory is modified so that it can explain both the old and new observations.
Explanation:
Answer:
The correct anwser would be B
Explanation:
how did wolves, whales, and the mystery fossil become so different from their ancestor populations
Answers
Explanation:
The differences between whales, wolves, and the Mystery Fossil may have evolved because the ancestors of each evolved in different environments. Populations can become separated into different environments. ... Over generations, two populations of the same species can become more and more different.
PLEASE I NEED HELP ILL GIVE BRAINLYEST
What percentage increase did CO2 experience from 1800 to 2004 AD?
Answers
The percentage of CO2 increased 48 percent. Hope this helped!
Define stoichiometry
Answers
Stoichiometry is the field of chemistry that is concerned with the relative quantities of reactants and products in chemical reactions. For example, when oxygen and hydrogen react to produce water, one mole of oxygen reacts with two moles of hydrogen to produce two moles of water
Answer:
the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
Explanation:
Dont put so much points pal,
A student pours Liquid A through filter paper. the liquid passes through the filter paper, but a residue remains on the filter. Liquid A must have been a(n)
A - Element
B - Compound
C - Plasma
D - Mixture
Answers
Answer:
I think it is A.Element maybe
a sample of gas X occupies 10 m^3 at a pressure of 120 kPa.if the volume of the sample is compressed to 3m^3 ,what is the new pressure of the gas?
Answers
Answer:
400 kPaExplanation:
The new pressure can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new pressure
[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]
120 kPa = 120,000 Pa
We have
[tex]P_2 = \frac{120000 \times 10}{3} = \frac{1200000}{3} \\ = 400000[/tex]
We have the final answer as
400,000 Pa = 400 kPaHope this helps you
Zr + O ⇒
B + O ⇒
Zn + C ⇒
Co + I ⇒
Mg + Br ⇒
Answers
WHAT- WHAT GRADE R YOU IN 0,0
The reason salt crystals, such as KCl, hold together so well is because the cations are strongly attracted to:
a
neighboring anions.
b
free electrons in the crystals.
c
neighboring cations.
d
the protons in the neighboring nucleus.
Answers
what are some ways that you can change the physical phase of matter?
How does matter change from one state to another
Answers
Answer:
Adding or removing energy can change the physical matter.
Explanation:
Like for example changing temperature
what resource is nonrewable?
A. Pigs
B. Wheat
C. Water
D. Petroleum
Answers
Answer:
d
Explanation:
Choose the correct statement.
1. A single displacement reaction produces an element as a product.
2. A double displacement reaction occurs between an ionic and a covalent compound.
3. Products of a complete combustion reaction are carbon dioxide and water.
4. Synthesis and Decomposition reaction products cannot be predicted with certainty.
Answers
Answer:
1
Explanation:
single displacement replaces one element with another and it's product is a pure element.
65 g of NaOH is dissolved to make 500 mL of solution. Find moles of NaPH and Molarity of solution.
Answers
Answer:
3.25 M
Explanation:
Number of moles = mass/ molar mass
mass of NaOH = 65 g
Molar mass of NaOH = 40 g/mol
Number of moles of NaOH = 65g/40 g/mol = 1.625 moles
Let us recall that;
n = CV
n = number of moles of solute
C = concentration of solution
V = volume of solution
C = n/V
n = 1.625 moles
V = 500/1000 L = 0.5 L
C = 1.625 moles/0.5
C = 3.25 M
What are the mole ratios of the following chemical equation: C3H8 + 5O2 --> 3CO2 + 4H2O?
Answers
Answer:Redox and combustion.
Explanation:
C3H8) reacts with oxygen in the air, so C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g) Classification: Redox and combustion.
How many molecules is 7.22 mole H2O
Answers
Answer:
no H2O molecules are produced:)
Explanation:
Answer: 18 g of water occupies one mole and one mole contains Avagadro’s no. of molecules = 6.023*10^23 molecules .
Explanation:question says 72 g of water . 72 g of water occupies 4 moles.
So the no. of molecules in 72 g of water has 4*(6.023*10^23) molecules .
Five liters of air at -35°C is warmed to 89°C. What is the new volume if the pressure remains constant
Answers
Answer:
7.61 liters
Explanation:
From the question,
Applying Charles law formula,
V₁/T₁ = V₂/T₂...................... Equation 1
Where P₁ = initial volume of of air, V₂ = Final volume of air, T₁ = Initial Temperature of air, T₂ = Final Temperature of air.
make V₂ the subject of the equation
V₂ = (V₁×T₂)/T₁............... Equation 2
Given: V₁ = 5 liters, T₁ -35 °C = (-35+273) K = 238 K, T₂ = 89°C = (89+273) K = 362 K
Substitute these values into equation 2
V₂ = (5×362)238
V₂ = 1810/238
V₂ = 7.61 liters
Which gas law would apply to the following scenario.
A family is going to a party in the mountains (no change in temperature). It was their job to bring balloons. By the time they arrived 2 of the balloons had
popped,
Gay-Lussac's Law
Boyle's Law
Charles Law
Avogadro's Law
Answers
If 12 moles of Al2O3
are produced, how many moles of aluminum reacted?
Answers
Answer:
if 12 moles are produced then it came 24 moles of Al(OH)3
Explanation:
The number that is written in front of the molecule is called stoichiometry, represents the number of mole of that molecule. 12 moles of [tex]Al_{2}O__{3}[/tex] is produced by 24 mole of Aluminum.
What is stoichiometry?Stoichiometry is a part of chemistry that help us in making relationship between reactant and product from quantitative aspects. It tells about how much part of reactant will be required to produce particular product. Unitary method is always applied in case of stoichiometry chemistry.
The balanced equation is
[tex]4Al+3O_{2}\rightarrow 2Al_{2}O__{3}[/tex]
The mole ratio between [tex]Al_{2}O__{3}[/tex] and Al is 2:4, means to produce 4 moles of [tex]Al_{2}O__{3}[/tex] we need 2 moles of Aluminum
4 mole of [tex]Al_{2}O__{3}[/tex]= 2 moles of Aluminum
1 mole of [tex]Al_{2}O__{3}[/tex]=(1÷2) moles of Aluminum
12 moles of [tex]Al_{2}O__{3}[/tex]= 24 mole of Aluminum
Therefore 12 moles of [tex]Al_{2}O__{3}[/tex] is produced by 24 mole of Aluminum.
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Explain why NH3 has a higher solubility in water than SbHz.
Answers
Answer: NH3 has a higher solubility rate than SbH3 because it has much stronger bonds. ... HoCH2CH2OH because it can form two bonds with water compared to the other molecule which can only form one.
HOPE THIS HELPS
Waves that we cannot actually see (unlike ripples in water) and that DO NOT need a medium to travel through belong to which category of waves?
Answers
Answer:
electromagnetic waves
Explanation:
The waves that do not need a medium to travel through are known as electromagnetic waves.
What are electromagnetic waves?These waves do not need any medium for their propagation or traveling. The waves have different wavelength and energy factors depending upon their rate of propagation. EMR waves travel from the sun to the earth in space.
Examples of electromagnetic waves are Xrays, gamma rays, radio waves, and more.
Find more information about electromagnetic waves here:
brainly.com/question/25847009
Estructura correcta de los siguientes compuestos e indique si el nombre está escrito de forma correcta; 1,4-ciclohexadieno
Answers
Answer:
En la imagen adjunta.
Explanation:
¡Hola!
En este caso, dados los lineamientos IUPAC que tenemos en cuenta para dibujar la estructura de hidrocarburos cíclicos, para el 1,4-ciclohexadieno, es posible determinar que esta estructura viene dada por hexágono que representa el ciclohexano y dos dobles enlaces en los carbonos 1 y 4 al ser un dieno. Por lo anterior, en la imagen adjunta, puede encontrar la estructura requerida.
¡Saludos!
Please help me out ........
Answers
Answer:c
Explanation:
Why is Chemistry so hard? And why is it required when most of us aren't going to use it after high school?
Answers
Question is in the photo
Answers
Answer:
c?
Explanation:
4. In the following reaction: 2NaN3 decomposes to form 2Na + 3N2. If 500 grams of NaN3 decomposes to form 320 grams of Na, how much Na is produced?
180 grams
320 grams
500 grams
Answers
mass of NaN₃ → moles of NaN₃ → moles of Na → mass of Na
500 g NaN₃ ×
1
mol NaN₃
65.01
g NaN₃
= 7.69 mol NaN₃
7.69 mol NaN₃ ×
2
mol Na
2
mol NaN₃
= 7.69 mol Na
7.69 mol Na ×
22.99
g Na
1
mol Na
= 176.8 g Na
Using Mass of N₂
You must make the following conversions:
mass of N₂ → moles of N₂ → moles of Na → mass of Na
323.20 g Na ×
2
mol N₂
28.01
g N₂
= 11.539 mol N₂
11.539 mol N₂ ×
2
mol Na
3
mol N₂
= 7.692 mol Na
7.692 mol Na ×
22.99
g Na
1
mol Na
= 176.85 g Na
This video allows us to see the circuit inside a flashlight. After watching the video, write notes in the space provided so that you can build the circuit in question 2.
https://app.edmentum.com/content-delivery//resource/b79af08f-5dcb-48ad-a6f5-f2c6d1e8f518
Answers
Answer:The video shows the electric circuit inside a flashlight. The battery provides power to the circuit. A metal strip is connected to the negative end of the battery. When the flashlight’s switch is pressed, the metal strip moves forward. It touches the metal connected to the bulb near the front. This motion closes the circuit, which creates a path for the electricity and causes the bulb to glow.
Explanation: plato
The electric circuit within a flashlight is powered by the battery. See below for more information.
What is a circuit?A circuit is a route that allows an electrical current to flow between two or more paths.
An electronic circuit comprises electronic components such as resistors or diodes joined by a metallic wire that conducts electricity and through which current flows.
From the video in the content;
The electric circuit within a flashlight is powered by the battery.The negative end of the battery is attached to a metal strip. There, the metal strip begins to move forward once the flashlight's switch is pressed. It comes into contact with the metal that is closely connected to the bulb close to the front. This action completes the circuit, allowing the electricity to flow and causing the bulb to light up.Learn more about the circuit here:
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The form in which the chemical energy is stored in cells during photosynthesis
A) Photosynthesis
B)Products
C)Chloroplasts
D)Glucose
