Answer:
6
Explanation:
im guessing because there is no diagram
Question 1 (1 point)
Why can a solution be classified as a mixture?
Question 1 options:
Both are made up of two substances that are not chemically combined.
Both are always homogeneous.
It is made up of only one substance.
Both are made up of two substances that are chemically combined.
Question 2 (1 point)
Which choice is an element?
Question 2 options:
air (N2 mixed with O2 , and CO2 )
oxygen (O2 )
sodium chloride (NaCl)
water (H2O )
Question 3 (1 point)
Which choice is a compound?
Question 3 options:
air (N2, O2 mixed with CO2)
carbon (C)
carbon dioxide (CO2 )
oxygen (O2)
Question 4 (1 point)
Which choice is a mixture?
Question 4 options:
carbon dioxide (CO2)
oxygen (O2)
air (N2 mixed with O2 and CO2)
carbon (C)
Question 5 (1 point)
How is a pure substance different from a mixture?
Question 5 options:
A pure substance is heterogeneous.
Pure substances cannot be separated by physical means.
A mixture is made of one substance.
Mixtures cannot be separated by physical means.
Please help!! You get 20 points!
question 1 : Both are made up of two substances that are not chemically combined
question 2 : oxygen (O2 )
question 3 : carbon dioxide (CO2 )
question 4 : air (N2 mixed with O2 and CO2)
question 5 : Pure substances cannot be separated by physical means.
which of the following can be used as chopping board because it is hard?
A. Glass
B. Rubber
C. Wood
D. Copper
what is the difference between Temperate grassland and Desert????????
what is the difference between Temperate grassland and Desert??
Или кислотой с базы можно хранить в одном контейнере? Обоснуйте ответ!
Identify the reactants and products in this chemical equation below:
C2H6 + O2 --> CO2 + H2O
a
Carbon is the reactant
b
C2H6 + O2 are the reactants, CO2 + H2O are the products
c
H2O is the product
d
CO2 + H2O are the reactants C2H6 + O2 --> are the products
which is it A B C or D?
Answer:
Option B
Explanation:
Remember that the products are on the right side of a chemical equation while the reactant is on the left.
In this case we have...
C2H6 + O2 ⇒ CO2 + H2O
Since C2H6 and O2 are on the left side that would mean they're the reactants, while CO2 + H2O are the products. Which means your answer is option B or "C2H6 + O2 are the reactants, CO2 + H2O are the products."
Hope this helps.
What concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide?
Concentration of NaOH will you place into the leaf jar to absorb the carbon dioxide at 0.75 M concentration.
What is concentration ?Concentration is calculated by dividing a constituent's abundance by the mixture's total volume. Mass concentration, molar concentration, number concentration, and volume concentration are four different categories of mathematical description.
The amount of solute that has dissolved in a specific amount of solvent or solution is measured as solution concentration. A concentrated solution is one that has a significant amount of dissolved solute in it. A diluted solution is one that has a little amount of dissolved solute in it.
Concentration is the ratio of the volume of the solution ( V ) to the mass of the solute ( m ) that is dissolved in it. C = m / V. Molality, mole fraction, and molarity are the three methods for calculating the concentration of a solution.
Molarity, molality, mass percentage, parts per thousand, parts per million, and parts per billion are examples of quantitative units of concentration.
Thus, option C is correct.
To learn more about concentration follow the link below;
https://brainly.com/question/12970323
#SPJ2
What is the formula for Tetracarbon octahydtide?
Answer:
Tricarbon octahydride has the formula C 3 H 8.This means it has three carbon atoms and eight hydrogen atoms.
Explanation:
Answer:
C3 H8
uR wElCOme
Can someone plz help and fast don't write a whole paragraph just the facts so i can write it myself because i have no clue what to do
What is the ratio of NH4+ ions to NO3- ions?
Answer:
Explanation:
3:4
4+ * 3 = 12+
3- * 4 = 12-
Therefore they cancel out to become neutral! As the HCF of 3 and 4 is 12!
An acid is used to bring the pH of a solution from pH 9 to pH 6. How many times more acidic is the final solution than the initial solution
Answer:
The final solution is 1.5 times more acidic than the initial solution
Explanation:
Two seventh grade students are riding in a car and listening to music on the radio.
How would the students increase the amplitude of the sound waves of the music?
Question 2 options:
Turn the volume up to create more energy
Turn the volume down to create less energy
Turn the volume up for a higher frequency
Turn the volume down for a slower frequency
Answer:
A. Turn the volume up for more energy.
Explanation:
The reason why this is the correct answer is because the louder the music gets the more energy it puts out therefore the answer is option A.
The students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
What is energy?Energy is defined as a quantitative quality that is conveyed to a person or a physical system and is discernible in the way work is done as well as in the way heat and light are produced. A conserved quantity is energy. According to the law of conservation of energy, energy can change its form but cannot be created or destroyed.
Sound waves are defined as the pattern of disruption brought on by energy's passage through a medium when sound travels away from its source. Pressure waves are produced by the vibration of objects and are known as sound waves. A sound source, such as the vibrating speaker's diaphragm in a stereo, produces the sound waves.
Thus, the students increase the amplitude of the sound waves of the music turn the volume up to create more energy. Hence option A is correct.
To learn more about energy, refer to the link below:
https://brainly.com/question/1932868
#SPJ2
can someone help with these 3 Questions
Answer:
there is only one pic
Explanation:
but if its oki can u type itt
Write the chemical formulas for carbon dioxide, water, and oxygen.
Answer:
Carbon Dioxide: CO2
Water: H2O
Oxygen: O2
What are the challenges for a "sustainable" world of lithium ion batteries?
Its for chemistry
The Lithium-ion Battery Problem
Overheating. They overheat and explode if charged too fast.
Short life time. They die after less than 1,000 charge/discharge cycles.
Flammable. They use chemicals that are flammable. ...
Toxic. ...
Underperform in extreme temperatures. ...
Expensive casing. ...
Expensive to transport.
2. Which of the following is an example of "chiming in"?
taking shorter showers
picking up trash
buying snacks in bulk rather than in individually wrapped packages
encouraging friends and family to cut back on their use of natural resources
Answer:
encouraging friends and family to cut back on their use of natural resources
Explanation:
I absoulutly know this is the correct answer.
Which of these has the highest electronegativity value based on the trend?
A. Calcium
B. Barium
C. Carbon
D. Oxygen
Scientists classify clouds by their_ and their weather patterns
Answer:
Clouds are classified according to their height above and appearance (texture) from the ground.
Explanation:
The following cloud roots and translations summarize the components of this classification system: 1) Cirro-: curl of hair, high; 2) Alto-: mid; 3) Strato-: layer; 4) Nimbo-: rain, precipitation; and 5) Cumulo-: heap. Hope this helps :)
I need help plsss
. Why is carbon able to bond with atoms of other elements in many different ways?
Because it has four valence electrons.
Because it has six total protons.
Because it has four total electrons.
Because it has six valence electrons.
Answer:
Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or molecules.
a 10 kg box sits on the floor. approximately how high would you have to lift the box to increase gravitational potentail energy by 350j
Answer:
3.5 meters
Explanation:
difference between isopropyl alcohol and denatured alcohol
Science answer all questions for 30 points
Answer:
scam it says 15 points
Explanation:
What is the density of a sample of 65.0 mL of automobile oil
having a mass of 59.82 g?
Answer:
0.92 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 59.82 g
volume = 65 mL
We have
[tex]d = \frac{59.82}{65} \\ = 0.920307...[/tex]
We have the final answer as
0.92 g/mLHope this helps you
Help Asap for Brainlist
Answer:
it is true
Explanation:
hope this helps (please mark me brainlist if you can)
Answer:
It’s false because noble gases are only in the p block and this notation finishes in the s block
Explanation:
sodium Sulphate solution was added to a solution of barium chloride till complete precipitation of Barium Sulphate. the mass of the isolated precipitation after filtration and drying was found to be 2 grams. calculate the mass of barium chloride in the solution. ( O= 16, S= 32, Ba=137, Cl=35.5)
Answer:
These two solutions react to form a white insoluble precipitate.
BaCl
2
+Na
2
SO
4
→2NaCl+BaSO
4
↓
This is a double displacement reaction as the two compounds exchange their ions to form two different compounds.
Explanation:im unsure if this is correct but lmk if its not
How do you solve this ?
Answer:
6. 66.674
Explanation:
You are given moles of H20 and the question is asking you to find the mass. You take the amount of moles given, 3.70 mol H2O and multiply it by the molar mass of water to go from moles to grams. The molar mass is the mass of 1 mole of that atom. So 1 mole of H2O is 18.02 g.
3.70 moles H2O x 18.02g = 66.674 g
what characteristic of an element differs between isotopes?
*
Si atoms have
valence electrons.
2
4
6
8
Answer: 4
Explanation:
e. Determine the experimental specific heat capacity of the copper. Show your
work.
(I forgot to add this on my last question :3)
Answer:
trust me u are wasting ur time here
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help Asap for Brainlist
Answer:
the third option
Hope this helps
Helium and nickel are classified as _____, which are pure substances that make up all kinds of matter. Group of answer choices
Answer:
Elements..............
