Answer:
B
Explanation: Density by definition is the amount of matter per given volume.
what is ZnCl2 name and formula
Answer:
Zinc chloride is the name of chemical compounds with the formula ZnCl2 and its hydrates
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additional information when you click on them. Drag and drop each item into the correct column. Order does not matter.
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Semimetal
Left side of PT
Dull and brittle
Good Conductor
Good Insulator
High density
High luster
Low melting point
Noble Gas
Oxygen, Nitrogen, Neon
Right side of PT
Semiconductor
Silicon, Germanium, Arsenic
Sodium, Magnesium, Iron
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Metalloids
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What is an example of a physical change that happens inside your body?
What is the type of reaction for the following: C3H8 + O2
Answer:
combustion reaction
Explanation:
because we have a carbon based compound reaction with oxygen gas to produce carbon dioxide and water.
1) balance the equation Zn +
HCI → ZnCl2 + Hz
Explanation:
Zn + 2 HCI → ZnCl2 + H2
Hope it will help :)
Is 2 H2 + 2 NO →2 H2O + N2 balanced?
Answer:
Yes
Explanation:
Is there a reaction between o2 and potassium iodide? If there is, please write it
Answer:
Explanation:
Potassium iodide reacts with oxygen in presence of water to produce potassium hydroxide and potassium diiodoiodate(I) .
5KI + 2H₂O + O₂ =4 KOH + I₂ + K(II₂) .
Which of the following characteristics indicates that an atom is unstable?
A. A full valence shell
B. Forming very strong bonds
C. Existing by itself
D. Low electronegativity
Forming very strong bonds indicates that an atom is unstable. Option B
Characteristics of an unstable atomForces binding it are unbalancedThe nucleus possesses an excess internal energy.It lacks a full valence shell due to lack of electronsPossession of high electronegativity, due to attraction of electrons.Forms electrostatic bonds; very strong bonds.Therefore, forming very strong bonds indicates that an atom is unstable. Option B
Learn more about unstable atoms here:
https://brainly.com/question/17425565
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18. What is the maximum temperature for holding cold, potentially hazardous food?
A. 32 degrees farenheit
B. 40 degrees farenheit
C. 41 degrees farenheit
D. 70 degrees farenheit
Answer: I believe the correct answer is C. 41 degrees Fahrenheit.
Explanation: Time and temperature are the most essential elements for monitoring the growth of disease-causing bacteria in food. The temperature danger zone lies between 40 degrees Farenheit and 140 degress Fahrenheit.
Hope this helps! ^^
2. Convert 1500 milligrams to grams.
Answer: 1.5 grams.
Explanation:
Why does barium have a larger atomic radius than beryllium!
Answer:
I think that it is related to the orbitals and the electron pairs in each atom.
try reading about "Vsepr" theory
Which element requires the least amount of energy to remove the most loosely held electron?
Р
CI
Ar
Na
Which element requires the least amount of energy to remove the most loosely held electron?
aanswer: bromine
3 C₂ H₂
How many CzHg molecules are in the picture?
Answer:
i think it will 3 of each hope it helps. three molecules of each
Guys please answer this
Fe2O3+3C —>2Fe +3CO
If we took 8 moles of carbon how many grams(mass) it would be??
Answer:
Mass = 96 g
Explanation:
Given data:
Number of moles of C = 8 mol
Mass of C in gram = ?
Solution:
Formula:
Number of moles = mass/molar mass
Molar mass of C = 12 g/mol
8 mol = mass / 12 g/mol
Mass = 8 mol × 12 g/mol
Mass = 96 g
If you have 0.750 moles of N2 how many liters do you have?
Answer:
By definition [Avogadro Law]
1 mole of ANY gas occupies 22.4L at STP
so 0.75 mole N2 occupies 22.4 x 0.75 = 16.8L at STP
Explanation:
why do particles in a matter vibrate/move?
Answer:
Explanation:
force
Answer:
energy!!
Explanation:
Which particle model diagram represents only one compound composed of elements X and Z?
Key
= atom of element X
= atom of element z
A
B
С
D
Answer:c
Explanation:
F2S3 what is the name of it PLEASE, is it Fluorine (III) Sulfur?
Answer:
Iron(3+) sulfide
Explanation:
What happens to the stable atoms as the rocks get older?
A. increases
B. decreases
C. stay the same
Answer:
A
Explanation:
Does solubility have any unit? Answer properly
Answer:
Water solubility is a measure of the amount of chemical substance that can dissolve in water at a specific temperature. The unit of solubility is generally in mg/L (milligrams per liter) or ppm (parts per million). You can often find it in the section 9 of a safety data sheet (SDS).
Explanation:
Which of the following is the correct structure of 2-methyl-3-heptene
a. CH3-CH2-C(CH3)=CH-CH2-CH2-CH3
b. CH3-CH2CH=CH-CH2CH(CH3)-CH3
c. CH3-CH2-CH=CH-CH-(CH3)-CH2-CH3
d. CH3-CCH(CH3)-CH=CH-CH2CH2-CH3
Answer:
answer d
Explanation:
methy group is in the second position while the double bond is in the third position
light travels faster than sons. true or false?
Answer:
true
Explanation:
light travels faster than sound.
The amount of dissolved salt in water is know as
Answer:
The water is solvent and the salt is solute
Write a chemical formula for this molecule.
Answer:
It is H2CO
Explanation:
What is the speed of a helicopter at the traveled 1200 miles in 7 hours
Answer:
171
Explanation:
How mariy molecules of water are in a 500.3 g sample?
Answer:
1.67×10^25 molecules
Explanation:
No of molecules = no of moles × Avogadros number
No of moles= mass in gram / molar mass
No of moles of water in given sample = 500.3/18
= 27.79 moles
No of molecules = 27.79× 6.02×10^ 23
= 167.32×10^23 or 1.67×10^25
What is the total number of atoms in 3.0 molecules of propanone, CH3COCH3? (Avogadro’s constant = 6 x 1023 mol-1)
Answer:
1.81 x 10²⁴atoms
Explanation:
Given parameters:
Number of molecules = 3 moles
Unknown:
Number of atoms = ?
Solution:
To solve this problem, we are going to use the mole concept.
1 mole of any substance contains 6.02 x 10²³ atoms
So
3 mole of propanone will contain 3 x 6.02 x 10²³ atoms = 1.81 x 10²⁴atoms
Which of these make up the mass of an atom?
Which element is a metalloid? selenium (Se) germanium (Ge) phosphorus (P) iodine (I)
Answer:
Ge
Explanation:
Answer:germanium (Ge)
Explanation:
A metalloid is an chemical element that exhibit a mixture of both metals and non metals properties. On the periodic table, they can be found on a zig-zagging line going downwards from the boron to the astatine,dividing nonmetals on the right and the metals on the left. '
They include
boron (B) silicon (Si)germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At).Germanium is hard, has a grayish-white luster appearance and brittle that it can shatter like glass.
...
See related question here:https://brainly.com/question/18738298
question: a group of similar organs doing the same job form the next step on the Ribbon of life which is
1. Connective tissue
2. An organ System
3. Nerve tissue
Answer:
the answer is An organ system
