Answer:
1.chemical change 2, when two chemicals are mixed they have mix two chemcials into one liquid
Explanation:
C3h8+o2=co2+h2o balance the equation
The ancient Egyptians planted crops and raised
animals for food as early as?
100 AD.
2000 BCE.
5200 BCE.
2560 BCE.
Based on the results of the genetic crosses you have shown how think the red and white flower alleles can "interact with one another? Explain both the F¹ and F² generations. ps.. ill mark you the brainliest
Answer:
in f1 its shows all hybrid red
Explanation:
RR rr
R R
4. Why is it that your feet don't sink into the earth?
Answer:
because our feet has more density
identify impacts of air pollution
Answer:
Air pollution can also cause headaches, dizziness, and nausea. ... Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases such as emphysema. Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs.
Explanation:
https://www.nationalgeographic.org/encyclopedia/air-pollution/#:~:text=Air%20pollution%20can%20also%20cause%20headaches%2C%20dizziness%2C%20and%20nausea.&text=Long%2Dterm%20health%20effects%20from,%2C%20liver%2C%20and%20other%20organs.
Use the bond enthalpy data given to estimate the heat released when 6.50 g of
nitrogen gas reacts with excess hydrogen gas to form ammonia at 25C.
Answer:
24.9
Explanation:
-
The two boron atoms listed in the table are isotopes of the boron. The two carbon atoms and the two oxygen atoms are also called isotopes. Based on the patterns in the particle compositions of these atoms, write a definition for “isotopes”
Answer:
A type of an atom which has a different number of neutrons but the same atomic number, therefore making it the same element. This atom would still have the same properties as well. (Ex: Vanadium-51 is an isotope of Vanadium that has 51 neutrons but still has 23 protons, as its atomic number is 23.)
Isotopes are variants of an element that have the same number of protons in their atomic nucleus, identifying them as the same chemical element, but differ in the number of neutrons.
The variations in neutron numbers among isotopes lead to differences in their atomic masses, resulting in isotopes having slightly different physical properties while retaining similar chemical behavior.
For example, in the case of boron, the two isotopes listed may have the same number of protons (5), but one has 6 neutrons, and the other has 7 neutrons, leading to slightly different atomic masses.
Similarly, for carbon and oxygen, the isotopes exhibit variations in neutron numbers while maintaining the same number of protons, defining them as isotopes of the respective elements. Isotopes play a crucial role in various scientific fields, including radiometric dating, nuclear energy, and medical imaging.
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A particular beer is 65.0% ethanol by volume . If a single bottle of beer contains a total of 750.0 mL of beer, what volume, in mL of ethanol (C₂H₆O), are present in the bottle?
SHOW CONVERSION
The volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5L
HOW TO CALCULATE VOLUME OF ETHANOL:
According to this question, a particular beer is 65.0% ethanol by volume. This means that the beer contains 65/100 of ethanol. If a single bottle of beer contains a total of 750.0 mL of beer, the volume of ethanol in the bottle is calculated as follows:= 65/100 × 750= 65 × 7.5= 487.5mLTherefore, volume in mL of ethanol (C₂H₆O) present in the bottle is 487.5LLearn more at: https://brainly.com/question/8725232?referrer=searchResults
Elements in the alkaline earth metal family of the periodic table
have
electronegativity values than elements in the
halogen family of the periodic table.
Answer:Lower
Explanation:
( just had the question on ck12.)
Elements in the alkaline earth metal family of the periodic table have lower electronegativity values than elements in the halogen family of the periodic table as they have less electrons in their valence shell.
What is periodic table?Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.
It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.
Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.
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Name the following compound and tell what type of compound it is: Protons 6, Neutrons 8, and electrons 6
Answer:
Carbon-14
Explanation:
It's carbon, because the element has 6 proton.
It's not an ion, because there are same number of proton and electron 6=6
It is carbon-14 because 6 proton + 8 neutron = 14
3.7x10^7 and 3.30x10^8 written in scientific notation
Answer:
1) 37100000
2) 330000000
Explanation:
1) 3.7 x 10^7 = 37100000
2) 3.30 x 10^8 = 330000000
(Hope this helps can I pls have brainlist (crown)☺️)
Is
M
For the following reaction, 43.1 grams of iron are allowed to react with 86.8 grams of chlorine gas.
ts
M
iron (s) + chlorine (g)
iron(III) chloride (s)
ts
M
What is the maximum amount of iron(III) chloride that can be formed?
grams
ots
M
What is the FORMULA for the limiting reagent?
ots
M
ots
What amount of the excess reagent remains after the reaction is complete?
grams
Ots2req
O
Submit Answer
Retry Entire Group
9 more group attempts remaining
Answer:
here is your answer
enjoy
How many atoms are in 1.27 mol of pure aluminum?
Answer:
To determine the amount of atoms (or molecules) present given the moles of an element, you multiply the amount of moles by Avogadro's number,
6.022
⋅
10
23
4 mol
A
l
6.022
⋅
10
23
1
m
o
l
=
2.41
⋅
10
24
atoms/molecules of
A
l
Explanation:
22.2 g of LiCiO4:3H2O in 125 mL of solution
Express your answer in moles per liter to three significant figures.
What is the Molar Mass?
Answer:
Molarity: concentration measured by the number of moles of solute per liter of solution 3)
Explanation:
According to molar concentration, molarity of solution is 1.104 moles per liter and molar mass is 160.437 g/mole.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.
Molarity of solution is obtained as, 22.2/160.437×1/0.125=1.104 moles per liter.Molar mass of LiClO₄.3 H₂O is 160.437 g/mole.
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4. The cup is a volume widely used by cooks in the UAE. One cup is equivalent to 237 mL.
a. If 1 cup of olive oil has a mass of 216 g, what is the density of olive oil in kg/mL?
b. Convert the density from part A to kg/mL. Write your answer in scientific notation.
Taking into account the definition of density and scientific notation, the density of olive oil is 0.000911 [tex]\frac{kg}{mL}[/tex] or 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]
Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space.
In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. That is, density is the relationship between the weight (mass) of a substance and the volume it occupies.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
In this case, you know that:
mass= 216 g= 0.216 kg (being 1000 g= 1 kg)volume= 237 mLReplacing in the definition of density:
[tex]density=\frac{0.216 kg}{237 mL}[/tex]
Solving:
density= 0.000911 [tex]\frac{kg}{mL}[/tex]
On the other side, scientific notation is a quick way to represent a number using powers of base 10.
The numbers are written as a product:
a×10ⁿ
where:
a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number. n = a whole number, which is called an exponent or an order of magnitude. Represents the number of times the point decimal is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.In this case, the density expressed in scientific notation is: 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]
In summary, the density of olive oil is 0.000911 [tex]\frac{kg}{mL}[/tex] or 9.11×10⁻⁴[tex]\frac{kg}{mL}[/tex]
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about density: brainly.com/question/952755?referrer=searchResults brainly.com/question/1462554?referrer=searchResultsscientific notation: brainly.com/question/18073768?referrer=searchResultsHow many mL of 1.76 M sodium hydroxide solution (strong base) must be added to 0.75
Macetic acid to make 683 mLa pH 49 buffer? (pka of acetic acid is 4.76)
Answer: Special care is required to prepare a solution of sodium hydroxide or NaOH in water because considerable heat is liberated by the exothermic reaction. The solution may splatter or boil. Here is how to make a sodium hydroxide solution safely, along with recipes for several common concentrations of NaOH solution.
Explanation:
Hope this helps!
A supermassive black hole can be found at
Location 1
Location 2
Location 3
Location 4
Answer:
location 2
Explanation:
what is the formula for tetraaquaoxalatoiron(III)sulphate
Answer:
Fe2(SO4)3(H2O)n
Explanation:
Answer:
sorry I couldn't understand the question
helppppppppppppppppppppppppppppp
Answer:
any form of water that falls from the sky
What is the overall charge of an atom? Explain why
Answer:
atoms have no overall charge. this is because they contain equal numbers of positive protons and negative electrons
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Time's Up!
Submit
Balance the following chemical equation (if necessary):
Rb(s) + RbNO3(s) → Rb2O(s) + N2(g)
3C,
2-
Reset
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1
3
4
2.
5
07
6
7
8.
9
o
Answer:
im sorry but what is it post to be
Explanation:
Question 1 of 5
An atom's nucleus contains 8 particles that have no charge and 6 particles
that are positively charged. What is the atomic number of the atom?
A. 2
O
B. 8
C. 6
D. 14
SUBMIT
Answer:
C. 6
Explanation:
The atomic number of a number is related to the number of protons in the nucleus.
5._____is and example of an element and __is an example of compound
A. MIXTURES
B. CARBON
C. PURE
D. CARBON DIOXIDE
PLS ANSWER IT
ITS SCIENCE
Answer:
Carbon Dioxide is and example of an element and Carbon is an example of compound
Which of these is a common to all chemical changes
A) A new change of sate occurs
B) A change of color occurs
C) a new substance is produced
D) heat is released into the air
Answer:
c
a new substance is produced
Colligative properties are dependent only on the number of particles in a solution, and not their identity. (select all that apply) Select one or more: a. Acidity b. Depression of freezing point c. Lowering of vapor pressure d. Osmotic pressure e. Elevation of boiling point f. Mortality g. Value h. Molarity
These colligative properties include reduced vapor pressure, increased boiling point, decreased freezing point, and increased osmotic pressure.
What do you mean by osmotic pressure?When a semipermeable membrane separates a solution from pure water, osmotic pressure is defined as the pressure that must be applied to the solution side to stop fluid movement.These colligative properties include reduced vapor pressure, increased boiling point, decreased freezing point, and increased osmotic pressure. As described in this module, this small set of properties is critical to many natural phenomena and technological applications.The pressure required to prevent water from diffusing through a membrane via osmosis is known as osmotic pressure. The concentration of the solute determines it. Water diffuses from the lower concentration area to the higher concentration area.Osmotic pressure is a 'colligative' property, like freezing point depression, which means that it depends on the number of particles in solution but not on their chemical identity.To learn more about : Osmotic pressure
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If the specific heat of Copper is 0.385 J/g °C and I add 10 kJ of heat to a 10kg block of copper, how much will the temperature of copper change?
a. 0.384 °C
b. 2.60 °C
c. 38.4 °C
d. 384 °C
e. more than 400°C
We have that for the Question "If the specific heat of Copper is 0.385 J/g °C and I add 10 kJ of heat to a 10kg block of copper, how much will the temperature of copper change?" it can be said that the temperature of copper change is
dt=2.60C
Option B
From the question we are told
If the specific heat of Copper is 0.385 J/g °C and I add 10 kJ of heat to a 10kg block of copper, how much will the temperature of copper change?
a. 0.384 °C
b. 2.60 °C
c. 38.4 °C
d. 384 °C
e. more than 400°C
Generally the equation for the Heat is mathematically given as
Q=Mcdt
Therefore
dt=\frac{1}{0.385}
dt=2.60C
Therefore
the temperature of copper change is
dt=2.60C
Option B
\
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Select the correct answer. Which statement best describes how chemical equations demonstrate conservation of mass? O A. The number of reactants is the same as the number of products. O B. The compounds are the same on each side of the reaction. O c. The number of atoms of each element is the same on each side of the equation. OD. The state of matter is the same on each side of the equation.
Note:
No need to explain.
Answer:
Option C )The number of atoms of each element is the same on each side of the equation.
Answer:
Option D
Hope it helps you
with examples of amino acids, explain the type of isomerism that exists in amino acids.
Answer:
All amino acids are stereoisomers with the exception of glycine (because it has no chiral centers) and the two types are enantiomers and diastereomers
Explanation:
Not sure how in depth you need but the most fundamental categories are:
Enantiomers: non superimposable images which means that they cannot be placed on top of one another and look perfectly identical and instead are structurally the same but flipped in the opposite direction. An example being D-alanine and L-alanine.
Diastereomers: The molecules are superimposable which means they have an identical structure that will look the same placed on top of one another however, the compounds attached to the structure are placed in different orders an example being, L-isoleucine and D-allo-isoleucine (compounds in same place but isoleucine has two hydrogens positioned forward while allo-iso have one positioned forward and one positioned in the back)
The common type of isomerism among amino acids is the optical isomerism.
Isomerism refers to a situation in which there are two or more compounds that have the same molecular formula but different structural formulas. When two compounds have the same molecular formula but different atom to atom connectivity, they are called stereoisomers. Stereoisomers that are mirror images of each other are called enantiomers.
The common type of isomerism among amino acids is the optical isomerism. The optical isomers of alanine are shown in the image attached.
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A blank is formed or separated by physical processes.
which of the materials above are mixtures
Answer:
water and vinegar
:salad
Explanation:
There is two kind of mixture the heterogeneous and homogeneous mixture.Which water and vinegar is the homogeneous and the salad is heterogeneous mixture based on my example above.
