Answer:
hydrogen
Explanation:
it is normaly found in acid
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Explanation:
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If a molecular formula is C8H12 O2 , what is the empirical
formula?
a Cs H12O2
b C2H3O
с C4H60
d C4H30
define the term valency
Answer:
Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
The sediment left behind by a glacier is typically
Answer:
It's typically a mixture of particles and rocks of all sizes
Explanation:
The mole ratio of two reactants in a chemical equation is determined by
Answer:
A mole ratio is the ratio between the amounts in moles of any two compounds involved in a chemical reaction. ... The mole ratio may be determined by examining the coefficients in front of formulas in a balanced chemical equation. Also known as: The mole ratio is also called the mole-to-mole ratio.
Which would most likely result in low oxygen levels in the blood?
Answer:
the person recieving low oxygen by haveing trouble breathing
Explanation:
Under what conditions would pressure affect the reaction rate?
A. If the reaction requires the use of a catalyst
B. If the reaction takes place between a solid and a liquid
O c. If the reaction is between two liquids
D. If the reaction occurs in the gas phase
Answer: D. If the reaction occurs in the gas phase
Explanation:
Answer:
D is correct via A P e x
Explanation:
What role does blood play before cellular respiration can occur?
Blood releases energy from very small molecules.
Blood carries energy from the cytoplasm to a mitochondrion.
Blood delivers oxygen and glucose to cells.
Blood delivers carbon dioxide and water to cells.
Answer:
B) Blood carries energy from cytoplasm to a mitochondrion
Hope this could help!
Explanation:
Answer:
C.
Explanation:
Blood provides your body with oxygen and glucose, which provides cellular respiration with the needed nutrients.
Please help urgent Balance the following word equation:
Aluminum chloride +
Sodium -->
Aluminum +
Sodium Chloride
Coefficents must stay in the order shown above.
Answer:
AlCl3 + 3Na > Al + 3NaCl
Explanation:
AlCl3+Na → Al + NaCl
Al =1 Al=1
Cl =3 Cl = 1
Na=1. Na = 1
so balance
and it would be
Alcl3 + 3Na → Al + 3NaCl
Would there be any differences in the amount of salt that dissolved in the warm water versus the cold water?
Answer: yes, warm water devolves the salt quickly and cold water keeps the salt good for a while.
Explanation:
Place help asap
. Your mother is preparing dough for making bhaturas, and she added a
pinch of yeast and some sugar to it. She kept the mixture in a warm place.
After an hour she observes that the dough has increased in volume.
a) Why did the dough increase in volume?
b) Do you think there is a change in smell and taste of dough? Give
reason for your answer.
c) Name the process observed here. Also mention another food item
where this process is used.
Describe THREE things that happen at CONVERGENT plate boundaries
HELP!
Using the same sample of gas (P = 475 torr , T = 21 °C ), we wish to change the pressure
to 4750 torr with no accompanying change in volume or amount of gas. What temperature T2 in
Celsius, is needed to reach this pressure?
Answer:
210°C
Explanation:
using the equation
P1/T1=P2/T2
475/21=4750/T2
T2= (21×4750)/475
T= 210°C
How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
Answer:
3966.82 J
Explanation:
q=sm∆T
q=73×13×4.18
the specific heat for water is 4.18
Answer:
[tex]\boxed {\boxed {\sf 39,668.2 \ Joules}}[/tex]
Explanation:
We are given the mass and change in temperature, so we must use this formula for heat energy:
[tex]q=mc \Delta T[/tex]
The mass is 73 grams. Water's specific heat is 4.18 J/g × °C. Let's calculate the change in temperature
ΔT= final temperature - initial temperatureΔT= 43 °C - 30°C ΔT= 13 °CNow we know all the variables and can substitute them into the formula.
[tex]m= 73 \ g \\c= 4.18 \ J/g* \textdegree C \\\Delta T= 13 \ \textdegree C[/tex]
[tex]q= (73 \ g )(4.18 \ J/g*\textdegree C)(13 \textdegree C)[/tex]
Multiply the first numbers together. The grams will cancel.
[tex]q= 3051.4 \ J/\textdegree C (13 \textdegree C)[/tex]
Multiply again. This time, the degrees Celsius cancel.
[tex]q= 39668.2 \ J[/tex]
39,668.2 Joules of heat energy are absorbed.
A exothermic reaction requires energy, produces energy, is energy-neutral.
Answer:
An exothermic reaction is going to produce energy.
Explanation:
rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.
A beaker with 150 ml of water is placed on a hot plate. The beginning temperature is 22 oC. After 5 minutes the temperature is 87 oC. What is the amount of thermal (heat)energy absorbed by the water. 150 ml = 150 grams specific heat of water = 4.184 J/goC. show work plzzz
The amount of thermal energy absorbed by the water : Q = 40,794 J
Further explanationGiven
150 ml water
Temperature = 22 °C to 87 °C
specific heat of water = 4.184 J/g°C
Required
Heat absorbed
Solution
Heat can be formulated :
Q = m.c.Δt
Q = 150 g x 4.184 J/g°C x (87-22)
Q = 40,794 J
Which one of these best describes an adaptation?
Answer:
c
Explanation:
Answer:
C
Explanation:
If not C it is D
Which of the following pairs of elements would form an ionic compound?
phosphorous/bromine
potassium/sulfur
nitrogen/iodine
oxygen/fluorine
Answer:
Explanation:
Ionic compound : These are the compounds in which the atoms are bonded through the ionic bond. The ionic bond are formed by the complete transfer of the electrons.
That means, the atom which looses the electron is considered as an electropositive atom and the atom which gains the electron is considered as an electronegative atom.
And these bonds are formed between one metal and one non-metal.
From the given pairs of elements, potassium and sulfur, magnesium and chlorine are form ionic compound because potassium and magnesium are the metals and sulfur and chlorine are the non-metals. So, they can easily form ionic compound by the complete transfer of electrons.
While the other pairs, sodium and potassium are the metals, nitrogen and iodine, chlorine and bromine, helium and oxygen are the non-metals. They do not form ionic bond.
What is the formula for tuesdium blackide?
Answer:
SF722
Explanation:
Undecylenic Acid
What does a low number on the pH scale say about a solution? O A. The solution is changing, OB. The solution is an acid. O C. The solution is neutral. O D. The solution is a base,
Answer: B) The solution is an acid.
Explanation:
Answer:
B
Explanation:
what is the phenotype for the genotyep WW ?? I NEED HELP ASAP HELPP MEEEEE
Answer:
The genotype for the pink flower is RW, and the genotype for the white flower is WW. This would lead to a 50 percent chance of the offspring having a phenotype of pink
Explanation:
In which circuit is there more than one path on which electrons can flow?
a) A simple circuit
b) A parrel circuit
c) A series circuit
d) A complex circuit
Answer:
A
Explanation:
Answer:
I think its b) parallel circuit
Explanation:
which sphere includes all the plants and animals on earth?? A. Lithosphere B.Type of soil C.Biosphere D.Asthenosphere
Answer:
Biosphere
Explanation:
It is B i think
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
I NEED HELP NOW!!!!!!!!!!!
Which ball (frame A or B) is moving with a higher velocity when it strikes the ground, and which ball has the greatest kenetic energy?
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
B: the balls in frame A and B have the same velocity, while the ball in frame B had the highest kenetic energy
C: the ball in frame B has the highest velocity and the highest kenetic energy
D: the ball in frame A has the highest velocity and the highest kenetic energy
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
What is the percent composition by mass of oxygen in
magnesium oxide, MgO?
(Molar mass of MgO = 40.3 g/mol)
%
Your answer should be rounded to three significant figures. Do not include units
In your answer.
What is the percent composition by mass of oxygen in magnesium oxide, MgO?
Answer: 39.7 percent
The percent composition by mass of oxygen in MgO is 65.84.
What is mass?The mass of a thing is a measurement of how much matter it contains.
What is percent composition?Percent composition is the way through which percentage of elements can be determine very easily. Formula:
O% = [tex]M_{A}M_{T}[/tex] ×100
Calculation of percent composition .
For MgO , the mass of oxygen atom is 16.3 and mass of Mg atom is 24.3.
By adding mass of oxygen and Mg total mass will be 40.3.
Now, put the value of given data in above equation:
O% = [tex]M_{A}M_{T}[/tex]×100O%
= 16./24.3×100.
O% = 65.84.
To know more about percent composition and mass click here.
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please help me with number 4
Answer:
Similar propoties is the answer
Giving brainliest for correct answer!
Which one will have a greater gravity force; a 50 kg object or a 100 kg object?
Please help me
How many hydrogen(H) atoms are in 3(NH₄)₂Cr₂O₇
And How many Nitrogen(N) atoms are in 3(NH₄)₂Cr₂O₇
Answer:
24 H
6 N
Explanation:
3 × (4 × 2) = 24 H
3 × 2 = 6 N
Which statements are correct about a flowering plant? It may have both male and female flowers. It may have only male or female flowers. It may have both male and female parts in the flower. It must have both male and female parts in the flower.
Answer: the last one, It must have both male and female parts in the flower.
Explanation: