Answer:
D cooler temperatures
Explanation:
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Magnesium has an atomic (proton) number of 12 and a mass number of 24.
How many magnesium atoms are there in 2 moles of magnesium? HELPPPPP
Answer:
1.2044x10^24 atoms
Explanation:
one mole of any element has 6.022x10^23 atoms
so 2 moles is just multiplying avogadros number by 2
2 x ( 6.022x10^23)= 1.2044x10^24 atoms
Which of the following areas would most likely see the largest amount of heat
flowing up towards the surface of Earth?
a. any area that just experienced an earthquake
b. an area of active volcanoes
c. all areas around the equator
d. heat never flows to the surface of the earth
Answer:
c. because all countries around the equator experiences heat
The atomic number tells you the number of_______ in one atom of an element. It also tells you the number of_________ in a neutral atom of that element. The atomic number gives the indentity of an element as well as its location on the Periodic Table. No two different element will havr the________ atomic number
Explanation:
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What is the scientific method webquest answers?
Which of the following is an observation of a chemical property?
zinc reacts with hydrochloric acid
water boils at 100°C.
density of wood is 0.51 g/cm3
sand paper is roughly textured
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Answer:
I think it's true
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.
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Answer: I am sorry i couldnt answer but this question is beyond me
Explanation:
A. Changes can occur to certain chemical properties of the substance, but the overall shape of the substance will remain the same.
B. Changes can occur to certain physical properties of the substance, but the overall shape of the substance will remain the same.
C. Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
D. Changes can occur to chemical properties of a substance, but the chemical composition of the substance remains the same.
Answer:
changes can occur to physical properties of a substance, but the chemical composition of the
substance remain the same.
Answer:
Changes can occur to physical properties of a substance, but the chemical composition of the substance remains the same.
Explanation:
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If an atom has four electrons in the outer energy level, how will it form a bond?
A. It will gain electrons.
B. It will share electrons.
C. It will not form a bond.
D. It will lose electrons.
Answer:
b . Thunder formed between carbon atoms and other elements because carbon has four valence electrons it made take for Coral Bell and funds to obtain a complete outer energy level.
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Answer:
there would be not movement.
Why can liquid metal be poured into a block-shaped mold?
Describe what happens to the shape and volume of the liquid
metal.
Answer:
yes
Explanation:
because
a regular solid box has a length of 5cm a width of 2cm and a height of 3cm what is the volume of the box
Volume of the regular solid = l × w × h
= (5 cm × 2 cm × 3 cm)
= 30 cm³
KI + Pb(NO3)2 → Pbl2 + KNO3
This chemical reaction represents the reaction of
potassium iodide (KI) and lead nitrate (Pb(NO3)2) to
form lead iodide (Pbl2) and potassium nitrate (KNO3).
When correctly balanced, the coefficient for lead iodide
will be_________.
Select one:
3
6
2
The balanced for the reaction is:
2KI + Pb(NO₃)₂ → Pbl₂ + 2KNO₃
When the equation is balanced, the number of atoms for each element on both the reactant and product sides of the equation are equal. This can be seen below:
Reactant Product
K 2 2
I 2 2
Pb 1 1
N 2 2
O 6 6
a major cause of rancidity of lipids in foods is exposure to
Answer:
exposure to the sun (heat and light) for long period of time and air (oxygen reacts with particles)
when you receive fluid in the hospital, it is often 0.9% saline solution. what would happen if the nurse used distilled water instead?
Answer:
The distilled water solution would be hypotonic to your blood cells, so they would gain water, swell, and possibly burst.
When a strontium compound is heated in a flame, red light is produced. When a barium
compound is heated in a flame, yellow-green
light is produced. Explain why these colors are
emitted.
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Direction: Answer the missing word
Answer:
i think it's higher for both u can try
Explanation:
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Answer:
Volume is cut in half
Explanation:
• From boyles gas law
[tex]{ \rm{P \: \alpha \: \frac{1}{V} }} \\ \\ { \rm{P _{1}V _{1} = P_{2}V _{2} }}[/tex]
P is pressureV is volume[tex]{ \rm{(1 \times V _{1}) = (2 \times V _{2})}} \\ \\ { \rm{ \frac{V _{2}}{V_{1}} = \frac{1}{2} }} \\ \\ { \boxed{ \rm{V_{2} : V _{1} = \frac{1}{2} }}}[/tex]
How many moles of HCl will be produced when 34.56 g of AIC3 are reacted according to this chemical equation
Answer:The answer to your question is It will be formed 0.39 moles of H₂
Data
moles of H₂ = ?
moles of HCl = 0.78
moles of Zinc = excess
Balanced chemical reaction
2 HCl + Zn ⇒ 1 H₂ + ZnCl₂
Process
Explanation:
1.- Use proportions to solve this problem. Consider the coefficients of the balanced reaction.
2 moles of HCl ---------------------- 1 mol of H₂
0.78 moles of HCl ----------------- x
x = (0.78 x 1) / 2
- Simplification
x = 0.78 / 2
- Result
x = 0.39 moles of H₂
Is this equation balanced? Explain why the equation S+3O2 → SO3 is balanced or is not balanced. Use four different words from the word bank to earn (4 points).
We can check if the equation is balanced by comparing the number of atoms of each element on the reactant and product sides. The reaction is only balanced if the number of atoms of each element is equal.
S + 3O₂ → SO₃
Reactant Product
S 1 1
O 6 3
∴ the equation is UNBALANCED since the number of atoms of oxygen on the reactant side is greater than that of the product.The balanced equation would be 2 S + 3O₂ → 2SO₃
Reactant Product
S 2 2
O 6 6
What do all of the cells have in common?
A) cell membrane B) endoplasmic reticulum C) flagellum D) nucleus
HELP FAST PLEASE !!!!
Explanation:
See the table above. Periods at the side, metals at the top, non metals to the right, group to the right of that
Overlap of the electron clouds of two atoms results in a(n)
a hydrogen bond
b dipole
C ionic bond
d covalent bond
Check it
We know that the electron clouds of two atoms overlapping is a bond, because that signifies that the electrons are being shared in a bond.
So, I'm going to go through some definitions of these different types of bonds, because they have very specific circumstances.
A hydrogen bond is a bond between an electronegative atom and a hydrogen molecule (which is not what this question says, this isn't stated anywhere).
A dipole is a difference in electron density on two different atoms (so this isn't even close to what the question is stating, a dipole is not even a bond)
An ionic bond is an unequal sharing of electrons between two atoms (because the question doesn't state this specific fact, then it can't be this option).
By process of elimination, we know the answer is covalent bond, but just in case, we can also look at the definition of a covalent bond: a bond that involves the sharing of electrons between atoms.
That is exactly what the question is asking for! Therefore, your answer is d. covalent bond
A compound is a hydrate when it
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Answer:
The answer should be primary pollutants from a stationary source.
Explanation:
Primary pollutants are emitted directly from a source and do not change in the atmosphere, and from a stationary source because manufacturing factories have a fixed location.
Hope this helped :D
Ned help with this question
what is the relationship between gas particles and pressure
Answer:
For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant..
Explanation:
Hope it helps you..
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A book is held against a wall by applying a force perpendicular to the surface of the book. In a free body diagram of all of the forces acting on the book, what force would keep the book from sliding down the wall? A. force of hand B. force of gravity C. friction force D. normal force
In a free body diagram of all of the forces acting on the book, the force which would keep the book from sliding down the wall is; Choice A: Force of hand.
In modern mechanics, it is noteworthy to know that the normal force, F(n) is the component of a contact force which is perpendicular to the surface that an object contacts.In this instance, the surface which the object contacts is the wall.
It has however been stated within the question that;
A book is held against a wall by applying a force perpendicular to the surface of the book.In conclusion, the force which keeps the book from sliding down the wall is the force of the hand which is perpendicular to the object's surface of contact.
Read more:
https://brainly.com/question/18775450
Answer:
FORCE OF HAND
what is the molar mass of dimethylglyoxime, c4h8n2o2?
Explanation:
The molar mass of a compound can be calculated by finding the molar of the individual atoms that combine to make the compound.
Molar mass of compound =
∑ (molar mass of element × number of atoms of the element)
∴ Molar mass of dimethylglyoxime
= 4C + 8H + 2N + 2O
= [(4 × 12.011) + (8 × 1.0080) + (2 × 14.007) + (2 × 15.999)] g/mol
= 116.12 g/mol
∴ the molar mass of dimethylglyoxime = 116.12 g/mol