Answers
Oxygen
Answer:
Fluorine-18
Explanation:
An isotope is an element with different amounts of neutrons. The element itself will not change.
Related Questions
How many grams are in 56 L of chlorine gas?
Answers
Answer:
Since 1 L equals to 1000 microlitres, and 1 microlitre equals to 1 gram, there are 56 * 1000 = 56000 grams of chlorine gas in 56 L of chlorine gas.
Explanation:
Hope this helped!
Explanation:
56 L Cl2 * 1 mol Cl2 / 22.4 L Cl2 * 70.906g Cl2 / 1 mol Cl2 = 177.265 g Cl2
1) Which diagram shows an element?
2) which diagram shows a mixture?
3) which diagram shows a compound?
4)which diagram only shows atoms chemically bonded together?
5) which diagram shows different atoms of matter physically combined together?
Answers
Answer:
r
I think 1 option okkkkkkkkkkkkk
Explanation:
mhfs4trfsetc fthcfeencfgeh,cbwjh vbytbnmdtuh3lg dl5flnfwk3t kqre,fvbt,klkkkjh
The simplest structures that can carry out all of the activities characteristic of life are
Answers
Answer:
Cells are the simplest structures that can carry out all of the characteristics activities of life.
Explanation:
All living things are made of cells and all cells come from other cells.
The climate in the temperate deciduous forest biome has four changing seasons with rain.
True
False
Answers
Determine the LIMITING reactant in the following balanced equation:
2KBr + CI2 --> 2KCI+ Br2, when 4g of KBr react with 6 g of CI . MM(KBr)=
119 g/mol MM(CI2)=70 g/mol *
Answers
Answer:
KBr is limiting reactant.
Explanation:
Given data:
Mass of KBr =4g
Mass of Cl₂ = 6 g
Limiting reactant = ?
Solution:
Chemical equation:
2KBr + Cl₂ → 2KCl + Br₂
Number of moles of KBr:
Number of moles = mass/molar mass
Number of moles = 4 g/ 119 gmol
Number of moles = 0.03 mol
Number of moles of Cl₂:
Number of moles = mass/molar mass
Number of moles = 6 g/ 70 gmol
Number of moles = 0.09 mol
Now we will compare the moles of reactant with product.
KBr : KCl
2 : 2
0.03 : 0.03
KBr : Br₂
2 : 1
0.03 : 1/2×0.03= 0.015
Cl₂ : KCl
1 : 2
0.09 : 2/1×0.09 = 0.18
Cl₂ : Br₂
1 : 1
0.09 : 0.09
Less number of moles of product are formed by the KBr thus it will act as limiting reactant while Cl₂ is present in excess.
1. True or false, phosphorus-33 is an isotope
Answers
Explanation:
it's answer is false
hope it helps you
15 POINT..!!! NEED ANSWER ASAP..!!! consider the original wave. which of the four example represents the same sound just much louder?
a). wave a
b). wave b
c). wave c
d). wave d
Answers
Answer:
the answer would be wave C
Answer:
C
Explanation:
The taller the wave the louder the sound.
A hydrated sample of cobalt II chloride has a molar mass of 309.99 g/mol. What is the mole ratio between cobalt II chloride and water?
Answers
Explanation:
Let there be 1 mole of CoCl2.
Mass of CoCl2 = 1mol * (129.839g/mol) = 129.839g
Mass of H2O = 309.99g - 129.839g = 180.151g
Moles of H2O = 180.151g / (18g/mol) = 10mol
Hence the mole ratio of CoCl2 to H2O is 1 : 10.
Answer:
[tex]\boxed {\boxed {\sf 1 \ mole \ CoCl_2 \ to \ 10 \ mole \ H_2O}}[/tex]
Explanation:
First, identify the formula of cobalt II chloride: CoCl₂
Next, find the molar mass of CoCl₂. Identify the individual element's mass.
Cobalt (Co): 58.93319 g/molChlorine (Cl): 35.45 g/molSince there is a subscript of 2 after the Cl, we must multiply the molar mass of chlorine by 2
CoCl₂: (58.93319 g/mol) + (2* 35.45 g/mol) = (58.93319 g/mol)+(70.9 g/mol) 129.83319 g/molAssuming the sample is 1 mole, we can subtract the mass we just found from the hydrate sample's mass. This is the mass of the water.
309.99 g - 129.83319 g= 180.15681 gNow, we need to find the number of moles of water. Begin by finding the molar mass of water: H₂O
Hydrogen (H): 1.008 g/mol Oxygen (O): 15.999 g/molSince there is a subscript of 2 after the H, we must multiply the molar mass of hydrogen by 2.
H₂O: (1.008 g/mol *2)+ 15.999 g/mol = (2.016 g/mol)+(15.999 g/mol)=18.006 g/molFinally, divide the mass of the water by the molar mass of water.
180.15681 g / 18.006 g/molNote that the grams or g will cancel.
180.15681 / 18.006 mol = 10.00537654 molThis is roughly 10, so we can round to 10.
≈ 10 mol H₂OSo, the mole ratio is 1 mole CoCl₂ to 10 mole H₂O
The process of burning a fossil fuel to release energy is called
Answers
Answer:combustion
Explanation:
Find the product 78.3 times 0.45
Please help :(
Answers
Answer:
35.235
Explanation:
I plugged 78.3x0.45 it into a calculator
what do you understand by valency electron and valency shell?
Answers
Answer:
total no. of electron present in Valency shell is called valency electron ___________________valency shell is that in which last electron is presentplease help out correct answers only
Answers
Answer:
Molecular formula = SF₆
Empirical formula is SF₆
Explanation:
Percentage of sulfur = 21.95%
Percentage of fluorine = 78.03%
Molar mass of compound = 146.1 g/mol
Empirical formula = ?
Molecular formula = ?
Solution:
Number of gram atoms of S = 21.95 / 32= 0.69
Number of gram atoms of F = 78.03 / 19 = 4.107
Atomic ratio:
S : F
0.69/0.69 : 4.107/0.69
1 : 6
S : F = 1:6
Empirical formula is SF₆
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass :
32 + 19×6 = 146
n = 146.1 / 146
n = 1
Molecular formula = n (empirical formula)
Molecular formula = 1 (SF₆)
Molecular formula = SF₆
(04.03 LC)
Which of the following is used up during cellular respiration?
O Carbon dioxide
O Mitochondria
O Oxygen
O Water
Answers
Answer:
Oxygen
Explanation:
Cellular respiration is the metabolic process that involves the breakdown of glucose molecule in order to synthesize energy in form of ATP. However, this cellular respiration can either be aerobic or anaerobic depending on whether oxygen is used or not.
Aerobic cellular respiration is the respiration that involves the use of OXYGEN. It occurs in the mitochondria of the cell, where oxygen is used as the final electron acceptor. Hence, according to the question, OXYGEN is used up during cellular respiration.
Answer:
Oxygen
Explanation:
got it on the test(:
help me pleaseeee, ty if you doo:))
Answers
Answer:
9 is the correct answer
The amount of resistance to a change in motion an object demonstrates is a direct function of its:
Answers
Answer:
Newton second law maybe?
When a substance is changed from a solid to liquid energy is_ _ _ _ d *81 points*
Answers
Answer:
That change is known as melting.
Explanation:
I am not sure what you are asking. I hope this helps!
what are the difference between an animal cell and plant cell
Answers
Answer:
ANIMAL CELL
Animal cells are generally small in size.
They don't have a cell wall
Except the protozoan Euglena, no animal cell possesses plastids.
Vacuoles in animal cells are many, small and temporary.
Animal cells have a single highly complex and prominent Golgi apparatus.
Animal cells have centrosome and centrioles.
PLANT CELL
Plant cells are larger than animal cells.
The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose.
They have Plastids
Most mature plant cells have a permanent and large central sap vacuole.
Plant cells have many simpler units of Golgi apparatus, called dictyosomes.
Plant cells lack centrosome and centrioles.
Hope this helps!
Answer: Differences between animal and plant cells :
Animal cell :- Animal cells are generally small in size. Cell wall is absent. Except the protozoan Euglena, no animal cell possesses plastids. Vacuoles in animal cells are many, small and temporary. Animal cells have a single highly complex and prominent Golgi apparatus. Animal cells have centrosome and centrioles. Plant cell :- Plant cells are larger than animal cells. The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose. Plastids are present. Most mature plant cells have a permanent and large central sap vacuole. Plant cells have many simpler units of Golgi apparatus, called dictyosomes. Plant cells lack centrosome and centrioles.
Explanation:
the correct lewis dot structure for CaO?
Answers
Answer:
Here you go.
Explanation:
Hopefully it is not confusing.
a compound contains 64g of O and 8g of H. what is the empirical formula for this compound
Answers
Explanation:
Moles of Oxygen = 64/16 = 4
Moles of Hydrogen = 8/1 = 8
Hence the empirical formula is H2O.
the outer skin makes the surfboard more expensive. Suggest two reasons why an outer skin is added to the polystyerene core.
(2 marks)
Answers
Answer:
It helps it not to break or crack. It is like an outer shell to protect it.
Explanation:
3. What determines that an element is a metal?
Answers
Answer:
if it forms from positive ions and has types of metallic bonds
Explanation:
The conversion factor 1 mol/6.02 × 1023 representative particles can be used to find the number of moles when the number of representative particles is known
true or false
Answers
Pla helppp due in 5 minutes!!..
Answers
The mouth is a part of what organ system
Answers
Answer:
Digestive system
Explanation:
..........
cellular respiration is when what energy from sugar/glucose is converted to cellular
Answers
Answer:
The correct answer is - cellular respiration is when chemical energy from sugar/glucose is converted to cellular energy in the form of ATP.
Explanation:
Cellular respiration is a set of metbolic reaction that takes place inside the cell and breaking the sugars or nutrients to convert the chemical energy present in the nutrients into the cellular energy whic is used by cells that is ATP and release water and carbon dioxide as waste.
In this process the ammount of energy store in the cellular currecncy or ATP which is the form of energy that is utilized by the to perform its sunction. The chemical energy that is present in the nutrients or sugar is come from light energy which is stored in the nutrients by photosyntheis process.
relation between atomic number and frequency of radiation
Answers
Answer:
This law established a relationship between atomic number of element and frequency of X-rays of that atom. According to this law, the square root of frequency of X-rays imparted by elements is directly proportional to the atomic number of that element.
what mineral is least important to plant growth
a. Nitrogen
b. Phosphorus
c. Potassium
d. Sodium
Answers
Answer:
sodium
Explanation:
nitrogem, phosphorous and potassium are very important to plant growth, but sodium isnt necessary.
Answer:
the answer is sodium hope this helps
How many Cl atoms are in Zn(ClO3)2?
O A. 2
O B. 1
O c. 3
O D. 6
Answers
There are two chlorine band six oxygen atoms in Zn ( ClO₃ )₂ molecule. Therefore, option A is correct.
What is chlorine atom ?With an atomic mass of 35.45 and an atomic number of 17, chlorine has an average of 17 protons, 17 electrons, and 18 neutrons in each of its atoms. Chlorine, which belongs to the halogen family on the Periodic Table, reacts vigorously with metals to produce salts.
Numerous industrial applications exist for chlorine as well. Including the production of plastics like PVC, solvents like tetrachloromethane, chloroform, and dichloromethane, as well as bulk goods like bleached paper products. In addition, it is utilized in the production of paints, textile colors, antiseptics, and pharmaceuticals.
Chlorine is a negative ion because it has a charge of 1, 1 more than protons. Atoms acquire or lose electrons during the formation of ions until their outer energy level is reached.
Thus, option A is correct.
To learn more about chlorine atom, follow the link;
https://brainly.com/question/1127028
#SPJ5
The gases in a hairspray can are at a temperature of 27 C and a pressure of 30 psi. if the gases can reach a pressure of 90 psi, the can will explode.To what Temperature must the gases be raised in order for the can to explode? You can assume volume remains constant..... please help!!!
Answers
The temperature for the can explode : 627 °C
Further explanationGay Lussac's Law
When the volume is not changed, the gas pressure is proportional to its absolute temperature
[tex]\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}[/tex]
T₁=27 C+273=300 K
P₁=30 psi
P₂=90 psi
[tex]\tt T_2=\dfrac{P_2\times T_1}{P_1}\\\\T_2=\dfrac{90\times 300}{30}\\\\T_2=900~K=627^oC[/tex]
What type of conservation tillage leaves the greatest amount of soil cover by crop residues? What are the advantages and disadvantages of this system?
Answers
Answer:
No-till conservation tillage
Explanation:
No till conservation involves the soil not being touched which gives rise to a large amount of organic matter being left on the surface.
The Advantage of this method is that it helps to prevent erosion such as that of wind and water due to the little or no exposure of the soil surface and helps to provide nutrients to the plants through the organic matter present.
The Disadvantage of this method is its heavy reliance of chemicals such as herbicides in killing the weeds in order to prevent competition for vital compounds with the main plants.