Answer:
The answer is letter C
What is the controlled variable of your experiment?
Your answer
Answer:
The controlled variable of an experiment is the one thing that stays the same in an experiment.
Explanation:
An example would be : if I have two pennies, both dunked in water, but than I change one to be dunked in vinegar, the one dunked in water still is the constant or the controlled variable.
helpppppppppppppppppppppppppppppppppp
Answer:
the drops of liquid are coming from the decreases. they are formed as the motion of the water particles in the air gas. this change in motion cause air in the air to change from a liquid to a water
Hello there!
The drops of liquid are coming from the air. They are formed as the motion of particles in the air decreases. This change in motion causes water in the air to change from a liquid to a gas.
Hope this helps you!
~Just a joyful teen
[tex]SilentNature :)[/tex]
✿❀❁❀✿When the electron from the n=4 excited state drops to the ground state, does it absorb energy or emit energy?
Answer:
It emits energy since to move from a higher energy level to a lower energy level or ground state, it must lose energy.
Biểu thức định luật Raoul là?
Answer: Định luật Raoult là một định luật hóa học vật lý, với ý nghĩa trong nhiệt động lực học. Được thành lập bởi nhà hóa học người Pháp François-Marie Raoult vào năm 1887, nó nói rằng áp suất một phần của mỗi thành phần của một hỗn hợp chất lỏng lý tưởng bằng với áp suất hơi của thành phần tinh khiết nhân với phần nốt ruồi của nó trong hỗn hợp. Kết quả là, việc giảm áp suất hơi tương đối của dung dịch pha loãng của chất tan không lây bằng với phần nốt ruồi của chất tan trong dung dịch.
Explanation: hope this helps :)
what is the bonding of hydrogen?
Answer:
A hydrogen bond is a primarily electrostatic force of attraction between a hydrogen atom which is covalently bound to a more electronegative atom or group, and another electronegative atom bearing a lone pair of electrons..
(refer the image)
Explanation:
brainliest plz
how many atoms of vanadium are in 1.28 grams of vanadium
The number of atoms in 1.28 grams of vanadium is 1.51×10²² atoms
Avogadro's hypothesisFrom Avogadro's hypothesis,
1 mole of Vanadium = 6.02×10²³ atoms
But
1 mole of Vanadium = 51 g
Thus,
51 g of Vanadium = 6.02×10²³ atoms
How to determine the atoms in 1.28 g of Vanadium51 g of Vanadium = 6.02×10²³ atoms
Therefore,
1.28 g of Vanadium = (1.28 × 6.02×10²³) / 51
1.28 g of Vanadium = 1.51×10²² atoms
Thus, 1.51×10²² atoms is present in 1.28 g of Vanadium
Learn more about Avogadro's number:
https://brainly.com/question/26141731
A compound's properties are different than the properties of the elements that make it up.
A)True
B)False
All of the following affect toxicity of a substance except*
origin of the substance
nature of exposure
duration
dosage
Answer:
durage
Explanation:
durage just doesn't make sense compared to the other 3
Answer:
Origin of the substance
Explanation:
Origin of a substance doesnt affect toxicity but all other options do
A student uses a solution of potassium hydroxide to titrate a solution of nitric acid. Which question is the student trying to answer?(1 point)
What is the concentration of nitric acid?
What is the concentration of nitric acid?
How much nitric acid solution is present?
How much nitric acid solution is present?
What is the concentration of potassium hydroxide?
What is the concentration of potassium hydroxide?
How many moles of potassium hydroxide are present?
How many moles of potassium hydroxide are present?
Answer:
A. What is the concentration of nitric acid?
Explanation:
its right
Answer:
A
Explanation:
Why is volume measured with different units?
Answer:
The volume of an object can be calculated by multiplying its length, width and height. Further, depending on the shape of the object, its volume changes.
Explanation:
Hope this helps
Is halogen radioactive
Answer: yes
Explanation:
which is more likely HON or HNO
NO- (isoelectronic or same as O2) is hard base
H+ is hard acid
bonding depends which pi* has more electron density and calc shows more on N...hence HNO is more likely (bent) molecule
whatever....
draw the lewis dot structure of C4H8N2O3
Explanation:
Refer to the attachment
Extrashots:-
C4H8N2O3 is called asparagine .
A boy rides his bike to his friends house. He travels 2 miles in 8 minutes. What is the boy's average speed? Write the formula, plug in the numbers, and write the answer.
Explanation:
y = 4×
explnation
8÷2 =4
1 mile equals 4 minutes
A boy rides his bike to his friend's house. He travels 2 miles in 8 minutes, the boy's average speed will be 0.25 meters per second (m/s).
What is speed?Speed of any object is the rate of change of position in the given time of interval or given time of the unit is said to be speed an can be measured by dividing the distance traveled with the time.
A boy rides his bike to his friend's house. He travels 2 miles in 8 minutes so the speed will be,
Speed = distance / time
Speed = 2 miles / 8 minutes
Sped = 0.25 meter per second (m/s)
Therefore, the average speed will be 0.25 meters per second (m/s) if the boy rides his bike to his friend's house. He travels 2 miles in 8 minutes.
Learn more about speed, here:
https://brainly.com/question/28224010
#SPJ2
helppppppppppppppppppppppppppp
Answer:
It's also true
Explanation:
the answer is written in this question
I hope that helps
Sodium (Na) and chlorine (CI) combine to form a __ of salt (NaCI)
A. Mixture
B. Molecule
Answer:A mixture
Have a nice day :D
5 examples of Earth Surface .
Answer:
lithosphere (land)
hydrosphere (water)
biosphere (living things)
atmosphere (air).
where does fertilization occurs in human beings
In human beings fertilization occurs in fallopian tube
Answer:
Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
3. Ethanol has a density of 0.800 g/mL.
a. What is the mass of 225 mL of ethanol?
Since the ethanol has a density of 0.800 g/mL, the mass of the ethanol is 180 grams.
Given the following data:
Volume of ethanol = 225 mLDensity of lead ball = 0.800 g/mL.To find the mass of the ethanol;
Density can be defined as mass all over the volume of an object.
Mathematically, the density of a substance is given by the formula;
[tex]Density = \frac{Mass}{Volume}[/tex]
Making mass the subject of formula, we have;
[tex]Mass = Density \times Volume[/tex]
Substituting the given parameters into the formula, we have;
Mass of ethanol = 180 grams.
Read more: https://brainly.com/question/18320053
Determine the total mass of 5 moles of CuSO4.5H2O
Answer:
Answer: 1247.5 grams
Explanation:
explanation on image .
What is a small description of a molecule
Answer:
molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance.
Part D
Based on the activity series you created in part C, predict whether there would be a chemical reaction or no
reaction when the listed pairs of substances are combined.
Answer:
magnesium and copper(II) sulfate no reaction
iron and magnesium sulfate reaction
copper and iron(III) nitrate reaction
magnesium and hydrochloric acid reaction
Explanation:
Can someone please help me answer this
Answer:
yiur mom
Explanation:
d
It’s a science question
Why can't more than one variable be changed during an experiment?
O You need to make sure your results match your hypothesis.
O Changing two or more variables makes it difficult to find a cause and effect relationship.
O Change two or more variables would take longer.
O Changing two or more variables would make the experiment more precise.
Answer:
Changing two or more variables makes it difficult to find a cause and effect relationship.
Based on their composition and structure, list CH3COCH3
C
H
3
C
O
C
H
3
, CH3CH(CH3)CH3
C
H
3
C
H
(
C
H
3
)
C
H
3
, and CH3COOH
C
H
3
C
O
O
H
in order of decreasing intermolecular forces.
Answer:
in order of decreasing intermolecular forces.
CH3COOH acetic acid
CH3COCH3 acetone or IUPAC propanone
, CH3CH(CH3)CH3 isobutane or IUPAC 2 methyl propane
Explanation:
Based on their composition and structure, list
CH3COCH3
this ketone has the middle intermolecular forces
, CH3CH(CH3)CH3
this hydrocarbon has the lowest intermolecular forces
, and CH3COOH
this carboxylic acid has the greatest intermolecular forces
in order of decreasing intermolecular forces.
CH3COOH acetic acid
CH3COCH3 acetone or IUPAC propanone
, CH3CH(CH3)CH3 isobutane or IUPAC 2 methyl propane
Predict the reaction
HCIO4+ KOH=
Answer:
HClO4 + KOH → KClO4 + H2O
Explanation:
Answer:
HCIO4 + KOH → KCIO4 + H2O
Explanation:
nailed it
Use the pie section above to answer this question.
The pie section shows Earth's composition from the center to the surface. Section IV is most likely composed of
solid iron.
basalt rock.
liquid iron.
granite rock.
And sorry for not putting the picture in the first one
Which layer is thin, brittle, solid, and composed primarily of silica?
the crust
the mantle
the outer core
the inner core
How many hydrogen atom are in compound NH42CO3
Answer:
There are 4 Hydrogen atoms in the compound NH42CO3
Explanation:
The "H4" is used to represent the amount of Hydrogen atoms in the compound itself, which is 4.
Consider the reaction.
2Pb(s)+O2(g)⟶2PbO(s)
An excess of oxygen reacts with 451.4 g of lead, forming 386.5 g of lead(II) oxide. Calculate the percent yield of the reaction.
Answer:837.9
Explanation:add those 2 numbers
