Answer:
there wauld be 12
Explanation:
cz yeh it is
1. How many carbon atoms react in this equation?
2C4H10 + 1302 = 8C02 + 10H2O
A. 2
B. 4
C. 6
D. 8
ns
im not so sure but I think the answer is 8. Sorry if im wrong
Question 9 Water molecules require a lot of energy to separate them
because...
Answer:
they are highly adhesive
Explanation:
Brainliest and more points if you do all 3
i need help please asap
Answer:
Bonding in chemistry is known as chemical bonding which means the interaction or attraction between molecules.
Chemical bonds are of different type such as ionic, covalent, hydrogen, and metallic. Ionic bonds are formed by the transfer of valence electron from one atom to other and there is unequal distribution of electrons between two or more atoms. Ionic bonds forms two oppositely charges ions positively charged (loses electron) or negatively charged (gains electron).
Covalent bond are the strong chemical bonds that form due to equal sharing of electron pairs between atoms. They form a stable element and have stable attraction or repulsive forces.
How can you find the number of protons from the nuclide symbol?
It is the difference in the mass number and atomic number.
It is half the number in the upper left (half the mass number).
It is the number in the lower left (atomic number).
It is the number in the upper left (atomic number).
It is the number in the upper left (mass number).
Answer: It is the number in the upper left (atomic number).
Explanation: The atomic number is normally the number of protons. I hope this helps.
What happens when Na forms an ionic bond?
O it gains one electron and becomes a -1 anion
it loses one electron and becomes a +1 cation
It loses 2 electrons and becomes a + 2 cation
It shares electrons with the other atom in the bond
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
in this also 1st option is correct because na is also a metal and metal gains electron...
The muscle responsible for the majority of a particular movement is known as the
a. prime mover
b. synergist
c. antagonist
d. fixator
Answer:
A.prime mover is Answer.
Explanation:
Prime mover. the muscle responsible for most of the movement in a group of muscles ; called the chief muscle.
I hope it's helpful!
please help which one is it
Answer:
answer is 0.5
Explanation:
H= 2X l =2
0=16 xl = 16
So 16+2=18
lmol of H2O → 18g
xmol of H2O →9g
:. 9÷ 18=0.5
x= 0.5
If we know the specific heat of a material, can we determine how much heat is released under a given set of circumstances?
Answer:
Yes
Explanation:
literally have no idea i just got it right on ck-12 lol
Yes, we determine how much heat "Q" is released under a given set of circumstances if we know the specific heat "c" of the material
The specific heat capacity "c" of a material is the amount of heat required to raise the temperature of a unit substance by 1kg. Mathematically, it is expressed as:
[tex]c=\frac{m}{Q\triangle \theta}[/tex] where:
m is the mass of the object
Q is the amount of heat absorbed or released by the object
Hence from the formula that we determine how much heat "Q" is released under a given set of circumstances if we know the specific heat "c" of the material
Learn more here: https://brainly.com/question/22991121
Fill in the blanks to create the lesson question,
which is the broad question about gases that
Boyle's law answers. You will explore this
question in the lab experiment.
Lesson Question: What is the effect of
V pressure v on the volume of a gas?
3
COMPLETE
LID
Hypothesis: If the pressure on a gas is increased,
then its volume will
because
the gas molecules will
DONE
Intro
Boyle's law states that If the pressure on a gas is increased, then its volume will decrease because the gas molecules will gets closely packed at high pressure.
What is Boyle's law?According to Boyle's law, at constant temperature the volume of a gas is inversely proportional to the pressure. Therefore, as the pressure is increased, volume of the gas is decreased.
The volume of a gas is the total space it occupied . The gaseous particles can diffuse anywhere at low pressure and they not collide each other at this maximum spreading condition.
When the pressure is increased, the force of intermolecular attraction increases make them more compressed and the space occupied by them that is the volume of the gas reduces.
To find more on Boyle's law here:
https://brainly.com/question/11233262
#SPJ2
Answer:
What is the effect of ✔ pressure on the volume of a gas?
Explanation:
edge 2023
plz help me I swear to God i will mark you brainiest
dedin acid it bubbles and gives off a vas.
What is the name of this gas?
b
Explain how you would test for this gan
Answer:
hydrogen
Explanation:
it is normaly found in acid
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Explanation:
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1
The process of a solid turning into a liquid is called
Answer:
Melting
Explanation:
Once heat is added it will turn to a liquid
Melting is the process of turning solid to liquid.
Explain how you would determine the amount of g in 1.7 mol of Al(OH)2 and give your answer.
Answer:
103.7 grams
Explanation:
[tex]Al(OH)_{2}[/tex]
Al: 1 * 26.98 = 26.98
O: 2 * 16.00 = 32.00
H: 2 * 1.01 = 2.02
26.98 + 32.00 + 2.02 = 61.00
[tex]\frac{1.7mol}{1}[/tex] * [tex]\frac{61.00g}{1mol}[/tex] = 103.7 grams of [tex]Al(OH)_{2}[/tex]
What is an ion atom?
Which salt is the most soluble in water at 50⁰c
Answer:
Table salt, or sodium chloride (NaCl), the most common ionic compound, is soluble in water (360 g/L)
please help which one is it
Answer:
17 g
Explanation:
Is this a balanced equation? 4NH3+ 5O2 – 4NO + 5H20
Answer:
The reaction is not balanced.
Explanation:
The reaction expression is given as:
4NH₃ + 5O₂ → 4NO + 5H₂O
In a balanced reaction equation, the number of atoms on both sides of the expression is the same.
Now let us investigate;
Elements N H O
Reactants 4 12 10
Products 4 10 9
We see that the number of H and O on both sides of the expression is not the same. The reaction is not balanced.
How many days is 1.6 x 10^7 minutes?
[tex](1.6 \times {10}^{7}) \: min \times \frac{1 \: hour}{60 \: min} \times \frac{1 \: day}{24 \: hour}[/tex]
[tex] = 11111.11111 \: days[/tex]
(round as you wish)
Write the word and balanced chemical equations for the reaction between:
Potassium hydroxide + hydrochloric acid
Answer:
Potassium hydroxide + Hydrochloric acid → Potassium chloride + Water.
potassium hydroxide + hydrochloric acid = neutralisation
which two types of rock could form after other rock melts into liquid magma
a. sedimentary
b. metamorphic
c. extrusive igneous
d. intrusive igneous
Answer:
a, b
Explanation:
look at rock cycle charts, I knew this since 2nd grade
Answer:
its c and d
Explanation:
I took the test got 100%
Identify the element:
1. 1s22s22p63s1
2. [Kr] 5s24d105p
Answer:
1. Sodium, Na
2. You left out the last number of the problem, so I will give you all six possibilities for the last 5p orbital:
5p1: Indium, In
5p2: Tin, Sn
5p3: Antimony, Sb
5p4: Tellurium, Te
5p5: Iodine, I
5p6: Xenon, Xe
What are the coefficients of the balanced reaction? _CH4 + _CI2 ➡ _CCI4 + _HCI
Answer:
CH4 + 4Cl2 --> CCl4 + 4HCl
Explanation: Message me if you need a thorough explanation
Which substance contains only one kind of atom?
O A. aluminum
B. ethanol
O C. salt
D. water
Answer:
A
Explanation:
Because ethanol consists C H and O formula C2H5OH
Formula of salt is NaCl
Formula of water is H2O
But fórmula of Aluminum is just Al
WHOEVER ANSWERS A GOOD ANSWER I WILL GIVE BRAINLIEST!
What would happen to the rate of evaporation if you moved all the containers outdoors into direct sunlight?
Answer:
Molecules contained in a liquid evaporate from the surface area. This means that the larger the surface area, the faster the rate of evaporation. ... This means all the other factors that affect the rate of evaporation are identical. Leave the containers for one hour.
Explanation:
Answer:
Evaporation would accelerate.
Explanation:
Direct sunlight increases the thermal energy on the containers, increasing evaporation.
Which statement is completely accurate?
Atoms of the same element can have different numbers of neutrons.
Atoms of the same element can have neutrons but exist without protons.
Atoms of the same element always have different numbers of neutrons.
Atoms of the same element always have different atomic weights.
Answer:The same chemical element can have a different number of neutrons and still be the same element. We refer to the atoms of the same element with different numbers of neutrons as "isotopes"
Explanation:
According to the rate law, how do concentrations affect rate?
O A. The rate increases as concentrations decrease.
OB. The rate is independent of concentrations.
O C. It is impossible to tell how the rate is affected.
O D. The rate increases as concentrations increase.
Answer:
Explanation:
d
A 328-g sample of water absorbs 5.78 × 103 J of heat. Calculate the change in temperature for the water. If the water is initially at 25.0 °C, what is its final temperature?
Answer:
The change in temperature for the water is 4.21 C and its final temperature is 29.21 C
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case, you know:
Q= 5.78*10³ J c= 4.186 [tex]\frac{J}{g*C}[/tex] m= 328 g ΔT= Tfinal-TinitialReplacing:
5.78*10³ J= 4.186 [tex]\frac{J}{g*C}[/tex] *328 g* ΔT
Solving:
ΔT= [tex]\frac{5.78*10^{3} J }{4.186\frac{J}{g*C}*328 g}[/tex]
ΔT= 4.21 C
Being ΔT= Tfinal - Tinitial and Tinitial=25 C, then:
4.21 C= Tfinal - 25 C
4.21 C + 25 C= Tfinal
29.21 C= Tfinal
The change in temperature for the water is 4.21 C and its final temperature is 29.21 C
I need help!
It’s question 2!
Answer:
A
Explanation:
Tectonic plates beneath the Earth's surface and crust are always shifting. Earthquakes occur when two plates shift or slip and cause a rupture which then starts an earthquake.
How is carbon dioxide released by animals? *
O during inhalation
O during exhalation
O during urination
O during eating
Answer:
Exhaled
Explanation:
Answer:
Exhale
Explanation:
Just like humans