Answer:
primary consumers and sometimes plants
Call this number 972-436-3577
Answer:
Dominos prank call hahahaha
Answer:
why
Explanation:
What is the relationship of rocks to minerals.
Rocks are minerals.
Minerals are rocks
Minerals are in rocks.
Rocks are in minerals.
Minerals are in rocks.
1.25mole Nocl was placed in a2.50l reaction chamber at 427c. After equilibrium was reached .1.10moles of Nocl remained.Calculate the equilibrium constant Kc for the reaction. 2Nocl(g)=2No(g)+cl2(g)
Answer:
Kc → 5.58×10⁻⁴
Explanation:
Equilibrium reaction is:
2NOCl (g) ⇄ 2NO (g) + Cl₂(g)
Initially we have 1.25 moles of NOCl
After the equilibrium, we have 1.10 moles. So, during the process:
(1.25 mol - 1.1 mol) = 0.15 moles have reacted.
As ratio are 2:2, and 2:1, 0.15 moles of NO and (0.15 /2) = 0.075 moles of chlorine, were produced in the equilibrium.
Finally in equilibrium we have: 1.10 moles of NOCl, 0.15 moles of NO and 0.075 moles of Cl₂. But these amount are not molar, so we need molar concentration in order to determine Kc:
1.10 mol /2.50L = 0.44 M
0.15 mol / /2.50L = 0.06 M
0.075 mol /2.50L = 0.03 M
Let's make expression for Kc → [Cl₂] . [NO]² / [NOCl]²
Kc = (0.03 . 0.06²) / 0.44² → 5.58×10⁻⁴
what is Pb+FeSO4-->PbSO4+Fe balanced and the type of reaction?
Answer:
It's simple substitution reaction and there is no balance for the equation. It's right written.
Explanation:
1. Which of the statements is correct?
A. Only asteroids collide with Earth.
B. Cornets are ball of ice, dust, and metal.
C. Meteoroids are streak of light produced when comet enters Earth's
atmosphere.
D. Only asteroids can be found in the solar system.
2. What do you call the fragments or debris that resulted from the collision of
asteroids or comets?
A. meteors
B. meteoroids
C. Oort Cloud
D. Kuiper Belt
3. What is the bright glow around the "head" of a comet?
A. coma
B. crown
C. halo
D. ring
4. What is the name of the famous comet that can be seen from Earth every 75 to
76 years?
A. Hale Boop
B. Comet Halley
C. Comet Tempel 1
D. Shoemaker Levy-9
5. What is the correct term for a “shooting star"?
A. asteroid
B. comet
C. falling star
D, meteor
6. What is an Asteroid Belt?
A. It has rocks crossing the Sun, Mars, and Jupiter.
B. It has rocks crossing the Sun, Jupiter, and Uranus.
C. It is an area between Mars and Jupiter where most asteroids are found.
D. It has rocks between the Earth and Jupiter where most asteroids are found.
Answer:
down
Explanation:
Answer
(a) F
Pole Star is a star in the galaxy and hence not a part of the solar system.
(b) T
Mercury is the smallest planet in the solar system and Jupiter is the largest planet in the solar system.
(c) T
Uranus is the farthest planet to the sun in the solar system and Mercury is the closest planet to the earth in the solar system.
(d) T
INSAT or Indian National Satellite System is a series of artificial Indian satellites used for telecommunications, meteorology and search and rescue operations.
(e) F
There are eight planets in the solar system. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Note the pluto is considered as a dwarf planet.
(f) F
Orion can be seen with naked eyes. It is one of the most magnificent constellations in the sky. It has seven or eight bright stars. Orion is also called the Hunter
In this exercise, we have to use our knowledge of astronomy to identify the correct alternatives, so we find that:
1)C
2)B
3)A
4)B
5)D
6)C
Then, based on astronomy knowledge, we can identify that the true alternatives correspond to:
1)A meteor happen a streak of light above bring into being by a meteor superlative through Earth's general feeling or mood.
2)Meteoroids exist lumps of rock or iron that revolution the brightest star, just as celestial body orbiting a star, asteroids, and comets act.
3)A coma happen the fuzzy-anticipate glow that maybe visualize situated on sides the head of a comet.
4)Halley's Comet, that happen 8 kilometres (5 miles) expansive and 16 km long, travels around the Sun each 75 to 76 age in an lengthened circuit.
5)Shooting stars exist existent what astronomers call meteors. Most meteors upset fashionable the gases around the earth before they reach the ground.
6)The celestial body orbiting a star belt happen a torus-form domain in the Solar System, situated about middle from two points the orbits of the celestial body orbiting a star Jupiter and Mars.
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anyone know how to do this?
Answer:
3.26×10⁵ L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 3.5×10⁵ L
Initial temperature (T₁) = 27 °C
Initial pressure (P₁) = 101 KPa
Final temperature (T₂) = –10 °C
Final pressure (P₂) = 95 KPa
Final volume (V₂) =?
Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:
T(K) = T(ºC) + 273
Initial temperature (T₁) = 27 °C
Initial temperature (T₁) = 27 °C + 273
Initial temperature (T₁) = 300 K
Final temperature (T₂) = –10 °C
Final temperature (T₂) = –10 °C + 273
Final temperature (T₂) = 263 K
Finally, we shall determine the new volume of the tank. This can be obtained as follow:
Initial volume (V₁) = 3.5×10⁵ L
Initial temperature (T₁) = 300 K
Initial pressure (P₁) = 101 KPa
Final temperature (T₂) = 263 K
Final pressure (P₂) = 95 KPa
Final volume (V₂) =?
P₁V₁ / T₁ = P₂V₂ / T₂
101 × 3.5×10⁵ / 300 = 95 × V₂ / 263
117833.333 = 95 × V₂ / 263
Cross multiply
95 × V₂ = 117833.333 × 263
95 × V₂ = 30990166.6
Divide both side by 95
V₂ = 30990166.6 / 95
V₂ = 3.26×10⁵ L
Thus, the new volume of the tank is 3.26×10⁵ L
of what does sand consist
Answer:
like ground rocks and shells I think.
Explanation:
What percent of FeSO4 is Fe
Answer:
About 36%
Explanation:
Alleles are different forms of ribosomes.
1 point
A. True
B. False
Answer:
true
Explanation:
i did the test
Answer: False
Explanation:
A certain type of decorative lamp contains colored liquids. These liquids form globs that break off and rise to the top of the liquid. The globs rise due to____.
Answer:
The globs rises due to convection.
Explanation:
Convection is when warmer parts move to the top and the cooler parts move to the bottom. Since the globs are going to be warmer, they rise to the top.
Hope this helps :D
explain how sand is form
Answer:
Sand comes from many locations, sources, and environments. Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar .
Explanation:
Describe the relationship between speed and kinetic energy.
A) A positive linear relationship
B) A negative linear relationship
C) A negative but not linear relationship
D) A positive but not linear relationship
Answer:
D) A positive but not linear relationship
Explanation:
This comes from the equation Ek=1/2mv^2
Where Ek is Kinetic Energy, m is mass, and v is the speed (or velocity).
As we can see in the equation, the relation is not linear but quadratic and it is positive.
Answer:
D) A positive but not linear relationship
Explanation:
Speed is equal to distance divided by time. ... Therefore, the kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four.
HOW LONG WILL IT TAKE TO PRODUCE 2DM3 OF CHLORINE GAS BY PASSING A 6A
CURRENT THROUGH CONCENTRATED SODIUM CHLORIDE SOLUTION AT R.T.P?
Answer:
2679.5 seconds or 2679.5 / 60 = 44.66 minutes to produce 2 dm3 of chlorine gas.
Explanation:
To solve this we must be knowing each and every concept related to current. Therefore, it will take 44.66 minutes to produce 2 dm³ of chlorine gas by passing 6A current through concentrated sodium chloride solution.
What is current?When an electrical current continually runs in a single direction, it is said to be in direct current. Rectifiers, batteries, generators using commutators, and fuel cells all generate direct current. A flashlight or an appliance powered by batteries, for instance, both use direct current.
Among the most crucial subjects addressed in physics is AC, DC current. A form of electrical current known as an alternating current, sometimes known as an AC current, is one in which the direction of electron flow changes periodically.
2679.5 / 60 = 44.66 minutes to produce 2 dm3 of chlorine gas by passing a 6A current through concentrated sodium chloride solution.
Therefore, it will take 44.66 minutes to produce 2 dm³ of chlorine gas by passing 6A current through concentrated sodium chloride solution.
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A basketball has a mass of 0.625 kg. Most basketball hoops are at a height of 3 m above the ground. What is the gravitational potential energy of a basketball just before it goes through the hoop?
The gravitational potential energy of a basketball : PE = 18.375 J
Further explanationGiven
height = h = 3 m
mass = 0.625 kg
Required
The potential energy
Solution
The energy produced from its position is called potential energy (PE)
which can be formulated as:
PE = m. g. h (g = 9.8 m/s²)
Input the value :
PE = 0.625 x 9.8 x 3
PE = 18.375 J
An atom with an atomic number of 33 is ionized and found to have a charge of -3. How many electrons in the atom? What is the isotope symbol of this atom ?*
Explanation:
The element with atomic number of 33 is Arsenic (As)
ionized and found to have a charge of -3.
The negative sign denotes that it gained an electron. So -3 means it gained 3 electrons.
How many electrons in the atom?
Total number of electrons = Number of electrons gained + Electrons in it's neutral state
Total electrons = 3 + 33 = 36
What is the isotope symbol of this atom ?
As³⁻ it has the same number of electrons with Krypton (Kr)
For any chemical process in an isolated system in which all reactants are converted to products, the original mass of reactants must be the final mass of products. is greater than or less than or equal to
Answer:
equal to
Explanation:
This question is depicting the LAW OF CONSERVATION OF MASS/MATTER, which states that matter can neither be created nor destroyed. Hence, in an isolated system, the original mass of the reactants must be EQUAL TO the final mass of the products formed.
In other words, the law states that no matter the change in chemical composition of the reactants in a chemical process, the mass does not change or it remains constant.
What is the percent composition of C4H10? (4 points)
44.6% C and 45.4% H
57.3% C and 42.7% H
82.7% C and 17.3% H
89.4% C and 10.6% H
Answer:82.7% C and 17.3% H
Explanation:
C4 = 12.0107g/mol x 4 = 48.0428 g/mol
H10 = 1.00794 g/mol x 10 = 10.0794 g/mol
Molar Mass of Butane, C4H10 = 48.0428 g/mol + 10.0794 g/mol= 58.1222 g/mol
percent composition of Carbon is = ( mass of carbon contained in butane / molar mass of Butane) x 100
=(48.0428 /58.1222) x 100% = 0.8265 x 100
=82.65% =82.7% of Carbon.
Percent composition of Hydrogen = (mass of Hydrogen contained in Butane / molar mass of Butane )x 100
( 10.0794/58.122 ) x 100% =0.1734 x 100
= 17.3% OF Hydrogen.
Answer:
C- 82.7% C and 17.3% H
Explanation:
I took the Quiz
I will give brainliest and so many points
Answer:are there any answer option? cause i know but i have to make sure
Explanation:
If a little old lady is doing 98.3 kilometers/hour, will she get a speeding ticket if the speed limit is 55 miles / hour? [USE: 5280 feet = 1 mile and 2.54 cm = 1.00 inch] (Show how to convert to miles / hour, even if your calculator does it for you.)
Answer:
It is possible she could get one.
Explanation:
To solve this problem we need to convert 98.3 kilometers/hour to miles/hour.
In other words, we convert km to mi, to do so we multiply 98.3 km by a conversion factor, putting the unit we want to have in the numerator, and the unit we want to convert in the denominator:
98.3 km * [tex]\frac{1000m}{1km} *\frac{100cm}{1m}*\frac{1in}{2.54cm} *\frac{1ft}{12in} *\frac{1mi}{5280ft}[/tex] = 61 miGiven that the little old lady is doing 61 miles/hour, she could get a speeding ticket.
A glass sphere is filled to full volume with a gas. The pressure of the gas inside the sphere is 30.0 atm, and the temperature is 30.0°C. The sphere is taken outside on a cold day. The temperature of the gas decreases to 10.0°C. What is the new pressure of the gas? Assume that the volume is constant.
Answer:
28atm
Explanation:
Using Gay lussac's law equation as follows:
P1/T1 = P2/T2
Where;
P1 = initial pressure (atm)
T1 = initial temperature (K)
P2 = final pressure (atm)
T2 = final temperature (K)
Based on the information provided in this question;
P1 = 30.0 atm, T1 = 30.0°C, P2 = ?, T2 = 10.0°C
NOTE: Absolute temperature i.e. Kelvin is required for this law
T1 = 30°C + 273K = 303K
T2 = 10°C + 273K = 283K
Using P1/T1 = P2/T2
30/303 = P2/283
Cross multiply
P2 × 303 = 30 × 283
303P2 = 8490
P2 = 8490/303
P2 = 28.02
New pressure of the gas = 28atm
Solid iron(II) sulfide reacts with aqueous hydrochloric acid to produce aqueous iron(II) chloride and hydrogen sulfide gas . Write a balanced chemical equation for this reaction.
A balanced chemical equation for this reaction :
FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)
Further explanationGiven
Word equation
Required
Balanced equation
Solution
The chemical equation can be expressed in terms of:
word equation skeleton equation balanced equationSkeleton equation
FeS(s)+ HCl(aq) --> FeCl2 (aq) + H2S (g)
Balanced equation
FeS(s)+2HCl(aq)→FeCl2(aq)+ H2S(g)
Based on graph 4 across a period the electronegativity
Plants need _______________ from the air for photosynthesis.
A. carbon dioxide B. soil
C. oxygen D. carbon monoxid
Answer:
A. carbon dioxide
Explanation:
All types of sciences use the same steps of the scientific method.
True
False
1.) What is the maximum number of grams of liquid water at 10C that can be heated to
30C by the addition of 84 joules of heat?
Answer:
m = 1 gram
Explanation:
Given that,
Heat, Q = 84 J
The temperature increases from 10°C to 30°C.
We need to find maximum number of grams of liquid water. We know that the heat required is given by :
[tex]Q=mc\Delta T[/tex]
c is specific heat of water, c = 4,200 J/kg°C
Use the above formula to find m. So,
[tex]m=\dfrac{Q}{c\Delta T}\\\\m=\dfrac{84}{4,200\times (30-10)}\\\\m=0.001\ kg[/tex]
or
m = 1 gram
So, the required mass is 1 gram.
What are the condiction requried for
work to be done
Answer:
the object should be displaced on which the force is applied
Explanation:
HOPE IT HELPS YOU
Which alkaline earth metal has the highest ionization energy? Refer to the periodic table.
calcium
magnesium
barium
strontium
The highest ionization energy of alkaline earth metal is calcium. Therefore, option (A) is correct.
What is the ionization energy?The ionization energy can be described as the minimum energy that an electron has to absorb to come out of the effect of the nucleus of a gaseous atom or ion.
It tells about the reactivity of chemical compounds and determines the strength of chemical bonds. The units of ionization energy are electronvolts or kJ/mol.
Ionization energy measures the difficulty in removing an electron from an atom or ion and the loss of electron occurs in the ground state of the chemical species.
According to the general configuration of alkaline earth metals, they contain two electrons in their valence shell. The atomic size of alkaline earth metals increases as we move down the group. The electronegativity and effective nuclear charge of alkaline earth metals decrease.
The electron can easily be lost from the atom as we move down the group. Therefore, calcium present at the top of the group has the highest ionization energy.
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What happens when water interacts with rock formations
Answer: It will erode or dissolve.
Explanation: Erosion is the process when water makes contact with rock. If water makes contact with rock, it will dissolve, partially or completely. Also, if the rock has cracks in it, the water will fill in the cracks, and when it turns winter, the rock is crumble, due because the water will turn into ice when it's winter.
When water interacts with rock formations it results into weathering.
What is Weathering?Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.
Weathering has no moving agent of transport, whereas in Erosion the rock and upper layer soil particles are worn away and moved elsewhere by water, wind, etc.
Rock exchange usually involves chemical deterioration in which the mineral composition in the rock is altered, rearranged or redistributed. Rock minerals are subjected to solution, carbonation, hydration and oxidation with circulating water.
Therefore, when water interacts with rock formations it results into weathering.
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eek helpppp ill give brainliestt
Answer:
S=Solid
Mg=Solid
B=Solid
Ca=Solid
Ar=Gas
H=Gas
Cs=Solid
Zn=Solid
Br=Liquid
Sb=Solid
N=Gas
Hg=Liquid
Explanation:
LITHIPODIUS NULLA
Which members of the population are the most adapted? Least adapted?
Answer:According to the Darwin’s theory “ the survival of the fittest” , any organism would survive through the process of natural selection by adapting itself to the changing environment in order to become the fittest among all of its native species.
Thus, in order to survive even after some major environmental changes, an organism is required to adapt to the new conditions.
Hence, option 2 is the correct answer which talks about adaptation as per the changing environmental condition
Explanation: