Answer:
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? The motion of the gas particles is random and in a straight-line.
Explanation:
look at the answerAccording to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? The motion of the gas particles is random and in a straight-line.
Foods that are basic can be identified
by what taste?
astr
A. Salty
B. Sour
C. Bitter
D. Sweet
Answer:
sour!
Explanation:
can yall help w this? iss times so try nd hurry :P
Answer:
The first option
Explanation:
No new compounds were added, and the pre existing ones wern't changed, so option one is the only one that makes sense.
Good luck!
Which of these is a chemical property of a substance?
Compressibility
Ductility
Reactivity
Size and shape
Answer:
Reactivity
Explanation:
Answer:
Reactivity
Hope This Helps!!!
Can someone help me with the answer because I'm not good with chemistry
When you lie down on a mattress the force of ______ pulls your mass towards the floor, while the force of the mattress pushes back up resulting in _______ forces, which allow you to sleep comfortably.
Answer:
1 gravity 2 counteractive
Explanation:
atomic weight of nitrogen,aluminium and calcium
Answer:
Atomic weight of(N) nitrogen is 14.0067
(Al)Aluminium is 26.98154
(Ca) calcium is 40.48
Explanation:
I hope it's helpful!
What is compost manure? Explain.
Answer:
Compost is a mixture of organic residues (manure, animal carcasses, straw, etc.) that have been piled, mixed and moistened to undergo thermophilic (high heat 113 to 160 degrees Fahrenheit) decomposition (SSSA, 1997).
Explanation:
show work on how you converted them. (also marking brainliest) <3
explanation for qn:
when converting units, u can show your working in the form
37.5 × 1g/1ml, then convert the g and ml into 1/1000 kg and L, and calculate from there. In the end, u find out its actually a trick qn and 1g/ml = 1 kg/L
in the food web above which organism has the least amount of energy available?
A. caterpillar
B. Squirrel
C. Fox
D. Shrubs
Three common gaseous compounds of nitrogen and oxygen of different elementary composition are known: (A) laughing gas containing 63.65% nitrogen, (B) a colorless gas containing 46.68% nitrogen, and (C) a brown toxic gas containing 30.45% nitrogen. Show how these data illustrate the law of multiple proportions.
Answer:
Please find how these data prove the law of multiple proportions below
Explanation:
The law of multiple proportions was proposed by an English chemist called John Dalton. The law states that when two elements combine and to form more than one compound. The weights/masses of the second element in the two compounds, which combines with a fixed ratio of the first element, is in a simple whole number ratio.
In this question, Nitrogen is said to combine with oxygen to give three different compounds as follows:
A) laughing gas containing 63.65% nitrogen i.e. 0.6365g
This means that the mass of oxygen will be (1-0.6365) = 0.3635g
B) colorless gas containing 46.68% nitrogen i.e. 0.4668g
This means that the mass of oxygen will be 0.5332g
C) brown toxic gas containing 30.45% nitrogen i.e. 0.3045g
This means that the mass of oxygen will be 0.6955g
The ratios of oxygen in the three compounds is therefore:
0.3635: 0.5332: 0.6955
Divide this ratio by the smallest number (0.3635)
0.3635/0.3635 = 1
0.5332/0.3635 = 1.467
0.6955/0.3635 = 1.913
Multiply this ratio by 2, we have:
2: 2.9 : 3.8
Hence, the simple whole number ratio is 2:3:4.
This proves the law of multiple proportions that oxygen is in simple whole number ratio in the three different compounds.
In a 5.609g of H20, how many molecules H20
arc
present?
Answer:
1.88 x 10²³molecules of H₂O
Explanation:
Given parameters:
Mass of H₂O = 5.609g
Unknown:
Number of molecules of H₂O = ?
Solution:
To solve this problem, we need to find the number of moles of given compound first.
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of H₂O = 2(1) + 16 = 18g/mol
Number of moles = [tex]\frac{5.609}{18}[/tex] = 0.31mole
From mole concept;
1 mole of a substance contains 6.02 x 10²³molecules
0.31 mole of H₂O will therefore contain 0.31 x 6.02 x 10²³molecules
= 1.88 x 10²³molecules of H₂O
Question 11 (5 points)
The following equation is balanced correctly:
Li + 02 --> Li20
O True
False
Answer:
False
Explanation:
On the left side of the equation (Li + O2), there is 1 Li atom and 2 O atoms.
but on thw right side of the equation (Li2O,) there is 2 Li atoms and 1 O atom
Dis fo chem try n answer it ig.
Place these waves in order from shortest wavelength to longest.
sound waves, light waves, ocean waves
Ocean waves aren't technically related to this. Sound waves are shorter than
light waves, depending on the type of light wave.
Phase of matter found in the sun and stars
Solid
Liquid
Gas
Plasma
Answer:
Your answer is Plasma which is D.
Explanation:
This is because lighting can be structed in the sky near stars or sun.
Aluminum reacts with oxygen to produce aluminum oxide. If I give Tanya 3.2 grams of aluminum, how many g of oxygen does she need??
Al + O2 ---》 Al203
I wrote it out as it was easier to visualise that way, youll need to tap to see the full pic. feel free to comment if u have qns :)
Using the periodic table, choose the more reactive non-metal.
S or As
The most reactive non metal is called Astantine(As)
The formula that forms when Magnesium and Permanganate bond
does lithium lose or gain valence electrons? and how much?
2 of 4 examples as to why humans are the most dangerous creatures in the ocean
Answer
We kill animals and we are creul :)
Explanation:
Your welcome
I need a answer quick. PLEASE
What is the volume of 2.43 x 1023 molecules of N2 gas at STP?
What gases do scientists think may have been in the early atmosphere? *
CH3CH = CHCH3 *
A. alkane
B. alkene
C. alkyne
Answer:
B
Explanation:
when present
double bond the copound is alkene
Need help urgently!!
If samples of two different elements each represent one mole,
a
heir molar masses are equal.
b
they contain the same number of atoms.
c
they are equal in mass.
d
they have the same atomic mass.
Answer:
it's-D...........................
Which substance can be decomposed by a chemical change?
A. Sodium, Na
B.Sulfur, s
C. Calcium Chloride, CaCl2
D.Argon, Ar
Answer:
It could be C. Calcuim Chloride.
Explanation:
If a person is sterile, he or she is:
unable to reproduce
unable to complete meiosis
unable to complete a Punnett square
unable to complete mitosis
Answer:
1
Explanation:
Sterile means sperm or eggs are not able to Technichaly Create or produce.
The time it takes the Moon to go from new moon to full moon and back to new moon is about
Answer:
it takes about 29.5 days for the moon to complete a cycle
Regan has an empty glass cup. It has a mass of 0.3 kg. She drops the cup on the ground and it shatters into several pieces. If she collected all of the pieces of the cup, how much mass would all of the pieces have combined?
A.
There is no way to determine the mass of the shattered glass.
B.
more than 0.3 kg
C.
less than 0.3 kg
D.
exactly 0.3 kg
Answer:
743456478697
Explanation:
Answer:
Exactly 0.3 kg
Explanation:
This is the right answer
What is the melting point of water? I need help
Answer:
You're answer is B.
Explanation:
I'm extremely sorry if that's wrong.
how does air pressure changes with altitude - the distance from the surface
Answer:At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels. ... Since more than half of the atmosphere's molecules are located below an altitude of 5.5 km, atmospheric pressure decreases roughly 50% (to around 500 mb) within the lowest 5.5 km.
Explanation:brainliest plz
Answer:
What is that?
Explanation:
