Answer:
X liters of 10% + (30 - x) liters of 22% = 30...
WW
Directions: Predict the products for each of the following reactions IN WORDS ONLY.
1. Calcium + Magnesium sulfide →
2. Sodium + Silver chloride →
3. Iron(II) sulfide + potassium →
4. Barium + Aluminum nitrate →
5. Potassium iodide + chlorine →
6. Zinc + Lead(IV) chloride →
7. Silver + sulfuric acid →
8. Barium
+
water →
9. Tin + hydrochloric acid →
10.
Gallium bromide + fluorine →
11.
Water + potassium →
Chemical reaction has to do with the interaction of substances to form a new substance sometimes involving the release of energy.
What is a chemical reaction?The term chemical reaction has to do with the interaction of substances to form a new substance sometimes involving the release of energy.
The following completes each of the equations shown;
1. Calcium + Magnesium sul-fide → calcium sul-fide + magnesium
2. Sodium + Silver chloride → sodium chloride + silver
3. Iron I I sul-fide + potassium → Potasium sul-fide + iron
4. /Ba/rium + Aluminum ni.trate → /Ba/rium n.itrate + aluminium
5. Potassium iodide + chlorine → Potassium chloride + i.odine
6. Zinc + Lead I V chloride → Zinc I I chloride + lea.d
7. Silver + sul-furic acid →Silver sul-fate + water
8. /Ba/rium + water → /Ba/rium hydroxide + hydrogen
9. T.in + hyd.rochloric acid → Ti.n IV chloride + hydrogen
10.G.allium br-omide + fl-uorine → Ga.lium fl-uoride + br-omine
11.Water + potassium → potassium hydroxide + hydrogen
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What force in liquids causes surface tension? covalent forces intermolecular forces intramolecular forces ionic forces.
Answer:
Intermolecular forces
Explanation:
Intermolecular forces cause surface tension.
Source info:
"Surface tension, capillary action, and viscosity are unique properties of liquids that depend on the nature of intermolecular interactions."
(11.S: Liquids and Intermolecular Forces (Summary)https://chem.libretexts.org )
Surface tension is said to be the result of the attraction between the particles present on the surface layer of the liquid matter. It is caused by intermolecular interactions. Thus, option b is correct.
What are intermolecular forces?Intermolecular interactions are the forces that are said to be secondary forces and allow the molecules to bond and interact together by the attractive and repulsive forces between the ions and the atoms.
The hydrogen bonds, ion-dipole, dipole-dipole, and dispersion forces are intermolecular interactions. They are not within but in between the molecules. They give rise to the surface tension in liquids that act cohesive and bind the various molecules in liquid together.
Therefore, option b. the intermolecular forces cause surface tension in liquids.
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Which of the following adaptations does NOT help animals survive in areas covered with snow?
a thick fur to keep the body warm
a thick layer of fat that insulates the body
a dark-colored fur to catch their prey
a white-colored fur to hide from predators
Answer:
a dark-colored fur to catch their prey
Explanation:
In areas covered with snow, the temperatures are too low. Therefore, animals surviving in these areas require thick fur or body insulation to ensure their body temperature is regulated. The snow is white in color and therefore, being white in color helps the animals camouflage hence not visible to the predators.
Having a dark color, this will only expose these animals to their predators since the areas are covered with white snow. They will be easily traced by their predators and maybe selected out by nature.
The above map shows the route of a car traveling from home to the
park. If the car is traveling at a constant speed, does the car
accelerate at any point on the route? Yes or No, and explain your
reasoning.
Answer:
Yes there is turns and strait points
Explanation:
Which element will have a noble gas configuration if it forms an ionic
bond by accepting one electron from a sodium atom?
A Cl
B S
C K
D Ca
Answer:
A. Cl
Explanation:
because chlorine is an halogen so it needs only one electron in order for it to obtain a full outer shell.
When the sun,the moon,and the Earth are arranged in this order,a ______eclipse is most likely to occur
Answer:
Lunar
Otherwise its solar, but im 99% sure its Lunar
Answer:
Solar Eclipse.
Explanation:
not exactly sure
Huge loops of plasma erupting from the sun are called.
Answer:
magnetic Flux ropes
Explanation:
Magnetic flux ropes (also known as coronal loops and solar prominences) sit on the surface of the sun, with matter and energy flowing through them, for hours or days.
what is matter? What is mixture?
Answer:
Matter is any substance that has mass and takes up space by having volume. Mixture is a substance made by mixing other substances together.
Matter is anything that has mass and occupies space.
Mixtures are substance composed of two or more constituents in physical combination.
What is matter?Matter is anything that has mass and occupies space.
Everything in the universe is composed of matter.
Matter exists in three states:
solid liquid gasWhat is a mixture?A mixture is a substance which is made up of two or more constituents physically combined together.
Mixtures are either homogenous or heterogeneous.
Examples of mixture are brass and salt solution.
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I need help with my chem work
Answer:
D
Explanation:
The more predators their are the less prey there are
calculate
the grams in 1.75 moles of H2SO4 and
round to the correct sig figs
Answer:
171.63734
Explanation:
Used a calculator lol
Does Jarren love Maria more or does Maria love Jarren more?
(Not for school)
Answer:
Maria
Explanation:
Answer:
Maria loves Jarren more is the answer.
Helped by QueenTlove Have an nice day
Calculate the ΔGr0 of the following reaction and state whether it is spontaneous at standard temperature or not. (You will need table B-12 in your CRG)
2AgNO3(aq)+MgCl2(aq) → 2AgCl(s) + Mg(NO3)2(aq)
Options are
1 - (151.38 kJ, yes
2 - (-150.14 kJ, yes
3 - (101.38 kJ, no
4 - (-131.14 kJ, yes
5 - (-131.38 kJ, no
The standard free energy change of the reaction is -150.14 kJ and the reaction is spontaneous.
What is a spontaneous reaction?A spontaneous reaction is a reaction in which further supply of energy is not required once the reaction ha gotten underway. The standard enthalpy change of a reaction is obtained from;
ΣΔG°reactants - ΣΔG°products
Having applied this and from the values of the standard free energy of each specie, the standard free energy change of the reaction is -150.14 kJ and the reaction is spontaneous.
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Energy
In this scenario, electrical Energy is transferred to___Energy
Answer:
light
Explanation:
I'm not sure to my answer but hope it helps if it is correct:)
What is the volume, in liters, of
1.50 mol Cl, at STP?
STP signifies standard temperature and pressure. These conditions are at 1 atmospheric pressure and 0 degrees Celsus, It has been said that at these conditions, one mole of a gas molecule is 22.4 liters of volume.
1.50 mol Cl2( 22.4 L / mol) = 33.6 L Cl2
4. Solid magnesium reacts with diatomic nitrogen gas to produce solid magnesium nitride.
If 2.4 grams of magnesium react in an excess of nitrogen, how many moles of
magnesium nitride are formed?
[tex]\\ \rm\longmapsto 3Mg+N_2\longrightarrow M_3gN_2[/tex]
Moles of Mg:-
[tex]\\ \rm\longmapsto \dfrac{2.4}{24}=0.1mol[/tex]
Here
3mol of Mg produces 1 mol magnesium nitride1mol of Mg produces 0.33mol Magnesium nitride.0.1mol of Mg will produce 0.33(0.1)=0.033mol Mg_3N_2what systems might not work right when you have a cold
Answer:
hello :3
A cold is a contagious upper respiratory infection that affects your nose, throat, sinuses and trachea (windpipe).
Explanation:
have a nice day :3
What kind of factors are light, temperature, and soil composition? biotic habitat ecological abiotic
Answer:
Your answer is D, Abiotic.
Hope this helped you!
How would I do this? A beaker contains 50.0 mL of 0.25 M aluminum nitrate solution. What is the minimum volume of 0.2 M sodium sulfide solution that must be added in order to precipitate out all of the aluminum ions from the solution?
The minimum volume of 0.2M sodium sulfide that will precipitate out aluminum from 50.0 mL, 0.25 M aluminum nitrate would be 0.094 L or 94 mL
Stoichiometric calculationFrom the equation of the reaction:
[tex]2Al(NO_3)_3 + 3Na_2S ---> Al_2S_3 + 6NaNO_3[/tex]
Mole ratio of Na2S and Al(NO3)3 = 3:2
Mole of 50.0 mL, 0.25 M Al(NO3)3 = 50/1000 x 0.25
= 0.0125 mole
Equivalent mole of Na2S = 3/2 x 0.0125
= 0.0188 mole
Volume of 0.2M, 0.0188 mole Na2S = 0.0188/0.2
= 0.094 L or 94 mL
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A force of 50 N displaces an object by a distance of 80 cm. Calculate the work
done.
Answer:
40 J
Explanation:
W= Fd = 50*0.8 = 40 J
80 cm = 0.8 m
What quantity of 75% acid solution must be mixed with a 20% solution to produce 220 mL of a 50% solution
Answer:
You will have to mix 240 mL of 75% acid with 300 mL of 30% acid to produce 540 mL of 50% acid
Explanation:
Calculate the number of moles in 9.22 X 10^23 atom iron
can someone help me with this page? This is the first one I have to get done and I need the rhythm and ability do the other two
Answer: yeah it’s just a picture with it filled out ♀️
Explanation:
I WILL GIVE BRAINLEST !! I WILL GIVE BRAINLEST !!!!
For the complete redox reactions given, identify the oxidizing and reducing agents.
2Sr + O2 --> 2SrO
Answer:
OIL o RIG sr
2Sr will be oxidation because it'll loses (2) electrons to O2. So, oxidised to form 2SrO
O2 will be reduction because it'll gain (2) electrons from Sr
Sr is oxidised. Thus, reducing agent because it causes O2 to be reduced.
O2 is reduced. Thus, the oxidising agent because it causes Sr to be oxidised.
Reducing agent = Sr
Oxidising agent = O2
Hope this helps!
What do claims show about the writer? Select two answers. (1 point) his or her conclusions that have been formed about the topic his or her writing process with a certain topic his or her flexibility when writing about a topic his or her beliefs about the topic that is being written about his or her organizational structure for writing about the topic
When a writer makes claims about a particular subject, the claim shows the opinions they have formed about the topic. It will also show their beliefs about the subject matter. Thus, the correct answers are A and D.
What are claims in Literature?Claims in literature are statements of an assertion that are written to validate an argument or line of thought.
Writers of non-fiction use claim to present their thoughts or the position of others as regards a subject matter while fiction writers use the same to present the views of their characters or narrators.
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A sample of matter is that extreme temperatures with particles moving so quickly that their collisions release electrons from the atoms. This creates a mixture of electrons in positively charged ions with high kinetic energy. What phase of matter does this describe?
A)Gas
B)Liquid
C)Plasma
D)Solid
C)Plasma
.............this was for 20 characters to submit the answer-dont mind this
Matter exists in three different physical states, namely solid, liquid and gaseous state. The plasma is also an another state of matter. The correct option is C.
What is plasma?The plasma is defined as the fourth state of matter. It is a hot ionized gas which consists of approximately equal numbers of positively charged ions and negatively charged electrons. It is not same as the neutral gas.
Since plasma contains electrically charged particles, they are strongly influenced by the magnetic and electric fields while the neutral gases are not. Like gases plasmas have no fixed volume or shape.
The density of plasma is also found to be less than solids or liquids. The plasma is known as a charged gas with strong electrostatic interactions. It is the plasma which make up the sun and stars and it is the most common state of matter in the universe as a whole.
Thus the correct option is C.
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why are some bases insoluble?
Answer:
bases which are not soluble in water do not give the hydroxyl ions and so they are treated differently from soluble bases called alkalis.
5 points
16. What is the change in the water's freezing point when 500 grams of
glucose (see image of C6H1206 below) are added to 750 grams H20? (Kf
water = 1.86 C/m) *
C6H1206
-0.686 °C
- 6.86 °C
A.
B.
- 68.6 °C
- 686 °C
O
C.
D
Answer:
its B
Explanation:
your welcome brainliest and 5 star
What are the forces on the wooden block when it is resting on a bench
Answer:
As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases
Explanation:
Since the static frictional force between the block and the plane is given by F = μN where
μ = coefficient of static friction and
N = normal force on plane = component of weight of block perpendicular to the plane = Wcosθ where
W = weight of block and
θ = angle of inclined plane
Now, F = μN
F = μWcosθ
Since μ and W are constant, we see that
F ∝ cosθ and cosθ ∝ θ
So, F ∝ θ
Since the static frictional force is directly proportional to the angle the plane makes with the horizontal, when the angle the plane makes with the horizontal is increased, the static friction between the block and the plane increases.
So, As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases
Which of these statements about the Plum-Pudding Model is incorrect?
It was disproven by Ernest Rutherford.
It is a model of the atom that had electrons within a positively charged sphere.
It is a model of the atom that has electrons surrounding the nucleus.
It was proposed by J. J. Thomson.
Answer:
It is a model of the atom that has electrons surrounding the nucleus
Step by step explanation:
Medicine X has a density of 50 g/mL. How many mL of medicine X would you
need to give a 100 g dose?
Answer: 2 m/L
Explanation: If there is 50g in every m/L and you need 100g, you can take the 100g / 50g, and you have 2, meaning two sets of 50 grams, or in this case to m/L of medicine, because each m/L has 50 grams of medicine in it.