Answer: Chloroplast: Converts energy from the sun to food energy
Answer: Vacuole: Servers as a temporary storage area for nutrients and waster materials.
Answer: Lysosome: Breaks down waste materials
Explanation: Dude above me is wrong
PLEASE HELP:
iron reacts with nitrogen to form iron(III) nitride
Answer:
[tex]2Fe +N_{2} -> 2FeN[/tex]
Explanation:
Iron is Fe, nitrogen is N. Nitrogen is diatomic, which means it occurs as a molecular pair by itself. Iron III nitride has a chemical formula of FeN because nitrogen has a charge of 3-, and iron III tells us the iron has a charge of 3+ so you just need one of each to make the charges balance and the compound neutral.
When iron reacts with nitrogen to form iron(III) nitride, the balanced chemical equation of this reaction is as follows:
2 Fe + N₂ → 2FeN
What is balanced chemical equation ?The term balanced chemical equation is defined as a chemical equation in which mass is conserved and there are equal numbers of atoms of each element on both sides of the equation.
The chemical equation must be balanced in order to obey the law of conservation of mass. When the number of different atoms of elements in the reactants side equals the number of atoms in the products side, the chemical equation is balanced.
Nitrogen is diatomic, that means it occurs as a molecular pair by itself. Iron III nitride has a chemical formula of FeN because nitrogen has a charge of 3-, and iron III tells us the iron has a charge of 3+ .
Thus, iron reacts with nitrogen to form iron(III) nitride.
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is the sun the only star in our solar system
Answer:
Hey mate......
Explanation:
This is ur answer.......
The largest star, and indeed the only star in our solar system, is the sun. The sun is a bit under a million miles across. About 110 Earths put side by side would equal the size of the sun. The sun has 99.8 percent of the mass of our solar system.
Hope it helps!
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What type of solution would have a pOH of 7
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Answer: None of these, because it is a neutral solution
Explanation:
I hope this helped!
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Answer:
none of these
Explanation:
it should have a neutral solution
Help this is for marks, who ever answers get brainliest
Answer:
Coal
Explanation:
thx for points :D
Answer:
Coal
Explanation:
your welcome<3
The molecular weight for the compound from the previous question is
64.07 g/mol. What is its molecular formula?
formation of SO3 from SO2 and O2 is favoured by
a) increase in pressure
b) decrease in pressure
c) Increase in temperature
d)decrease in temperature
Answer:
answer is A. increase in pressure
l think this correct answer
PLEASE HELP!!
A scientist places a pH meter in a sample of concentrated potassium hydroxide (KOH). The scientist slowly adds nitric acid (HNO3) to the KOH and monitors the pH. Describe how the pH and hydronium ion concentration will change in the solution as the acid is added.
Answer:
pH of the solution will decrease & hydronium ion concentration will increase in the solution as the acid is added.
Explanation:
How many electrons and protons does the sodium ion have 11 protons and 11 electrons
Answer:
A sodium ion Na+ contains 10 electrons, 11 protons, and 12 neutrons.
Explanation:
HELP ASAP WHATS THE DEFINITION I NEED JT NKW
Answer:
1.Summer solstice 2.seasons 3. winter solstice 4. Equinox
Explanation:
I hope it helps!
Have a great day!
All atoms of a given element are identical in that they have the same number of
a) protons
b) neutrons
c) electrons
Answer:
A) protons
Explanation:
Protons are what give atoms their elements. If one atom has a differing number of protons from another atom, they will never be the same element.
Which three forces can affect an object without contact?
Answer:
gravity, magnetic, electrostatic
A chemical reaction causes the chemical compositions of substances to change.
a. True
b. False
Answer:
True
Explanation:
A chemical change is otherwise known as a chemical reaction. A chemical change is characterized by the formation of new substances, evolution of heat and change in chemical composition of substances. The change in the composition of substances during a chemical change is the result of the making and breaking of chemical bonds during a chemical change.
A chemical change is not easily reversible because it involves changes in chemical composition of substances.
An example of a chemical change is the combination of sodium hydroxide and hydrochloric acid according to the reaction equation;
HCl(aq) + NaOH (aq) -----> NaCl(aq) + H2O (l)
We easily notice the change in the chemical composition of each of the substances involved in the reaction.
Use the following balanced reaction to solve 1-3:
P4 (s) + 6H2 (g) → 4PH3 (g)
1. How many grams of Hydrogen gas (H2) will be needed to react with 20 grams of P4?
Answer:
1.96g H2
Explanation:
P4 = 123.9g/mol
H2 = 2.02g/mol
[tex]\frac{20g P_{4} }{1}[/tex] * [tex]\frac{1 mol P_{4} }{123.9g}[/tex] * [tex]\frac{6 mol H_{2} }{1 mol P_{4} }[/tex] * [tex]\frac{2.02g H_{2} }{1 mol H_{2} }[/tex] = 1.96g H2
A sample of gas has an initial volume of 30.8L AND an initial temperature of -67 degree Celcius. What will be the temperature of the gas if the volume is 21.0L?
Answer:
–132.55 °C
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 30.8 L
Initial temperature (T₁) = –67 °C
Final volume (V₂) = 21.0 L
Final temperature (T₂) =?
Next, we shall convert –67 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T₁) = –67 °C
Initial temperature (T₁) = –67 °C + 273
Initial temperature (T₁) = 206 K
Next, we shall determine the final temperature of the gas. This can be obtained as follow:
Initial volume (V₁) = 30.8 L
Initial temperature (T₁) = 206 K
Final volume (V₂) = 21.0 L
Final temperature (T₂) =?
V₁/T₁ = V₂/T₂
30.8 / 206 = 21 / T₂
Cross multiply
30.8 × T₂ = 206 × 21
30.8 × T₂ = 4326
Divide both side by 30.8
T₂ = 4326 / 30.8
T₂ = 140.45 K
Finally, we shall convert 140.45 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T₂ = 140.45 K
T₂ = 140.45 K – 273
T₂ = –132.55 °C
Thus, the new temperature of the gas is –132.55 °C
PLEASE HELP!!!
Some single displacement reactions involve one halogen replacing a less reactive halogen.
Cl2, replaces iodine in NaI, producing I2 and NaCl. Write the balanced single displacement reaction with the simplest whole number coefficients.
Do not include the states of the reactants or products.
Answer:
[tex]Cl_2+2NaI\rightarrow I_2+2NaCl[/tex]
Explanation:
Hello there!
In this case, according to the described chemical reaction, Cl2 replaces iodine in NaI in order to produce I2 and NaCl:
[tex]Cl_2+NaI\rightarrow I_2+NaCl[/tex]
It is possible to realize how chlorine replaces iodine in agreement with the single displacement reaction. Moreover, since chlorine and iodine atoms are not correctly balanced, we add a 2 in front of both NaI and NaCl in order to do so:
[tex]Cl_2+2NaI\rightarrow I_2+2NaCl[/tex]
Best regards!
The balanced single displacement reaction should be Cl2+2Nal→I2+2NaCl.
Balance single displacement reaction:The C12 should be replaced with the iodine in Nal for generating the 12 and NaCl.
Also, the chlorine should replace the iodine in the agreement along with a single displacement reaction. Also, the chlorine and the iodine atoms should not be rightly balanced.
Therefore, The balanced single displacement reaction should be Cl2+2Nal→I2+2NaCl.
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how many grams of hcl would be produced if 54 grams of water were used
Answer:
i dont know
Explanation:
its simple i dont know
Answer:
Explanation:Red
PCR amplification utilizes ________ template to produce a ________ product. For this question, select the answer that best describes the process as a whole: the nature of the template you used (the starting template added to the reaction) and the nature of the final product produced in your PCR analysis that you ran out on a gel will apply here.
Answer:
Double-stranded/Double-stranded
Explanation:
The PCR which is popularly known as polymerase chain reaction is the technique that uses the single copy of DNA to make thousands or levels a huge number(in terms of millions) of duplicates of that DNA.
The PCR is a laboratory procedure that is utilized to make various duplicates of a section of DNA as depicted previously. It is an unmistakable strategy.
There are 3 fundamental advances in PCR:
Denaturing
Annealing
Extending
In denaturing measure requires warming of the double-stranded DNA template to isolate it into a solitary strand. Eventually, it resulted into a double-stranded item.
If a mechanical wave has a frequency of 0.147 Hz and a wavelength of 12.05 m, what is the velocity of the wave? (round to the hundredths place)
Answer:
0.147 Hz because I took the test
The velocity of a wave is the product of its frequency and wavelength. The velocity of wave with 0.147 Hz and 12.05 m is 1.77 m/s.
What is frequency ?The frequency of a wave is the number of wave cycles per unit time. Frequency is the inverse of time period of the wave. It is inversely proportional to the wavelength. Unit of frequency is Hz which is equivalent to s⁻¹.
The wavelength of a wave is the distance between two consecutive crests or troughs. The wavelength λ, and frequency ν of a wave is related to the velocity v of the wave as follows:
v = νλ
Given that,
frequency = 0.147 Hz
wavelength = 12.05 m
then, velocity = 0.147 Hz × 12.05 m = 1.77 m/s.
Therefore, the velocity of the mechanical wave is 1.77 m/s.
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1. Calculate the percent composition of the elements in C4H8O2.
Answer:
%C = 54.53%
%H = 9.144%
%O = 36.32%
Explanation:
Step 1: Calculate the mass of each element in 1 mole of C₄H₈O₂
We will multiply the number of atoms by the molar mass of the element.
mC: 4 × 12.01 g = 48.04 g
mH: 8 × 1.007 g = 8.056 g
MO: 2 × 16.00 g = 32.00 g
Step 2: Calculate the mass of 1 mole of C₄H₈O₂
We will sum the previously calculated masses of the elements.
mC₄H₈O₂ = mC + mH + mO = 48.04 g + 8.056 g + 32.00 g = 88.10 g
Step 3: Calculate the percent composition of each element
We will use the following expression.
%Element = mElement / mCompound × 100%
%C = 48.04 g / 88.10 g × 100% = 54.53%
%H = 8.056 g / 88.10 g × 100% = 9.144%
%O = 32.00 g / 88.10 g × 100% = 36.32%
if i have a bean then how many rice do i have in bean??
Answer:
What?
Explanation:
That makes no sense at all
Vinegar is a solution with a 3% mass of acetic acid. How much acid is in 550 g of vinegar?
16.5 g
10.5 g
4.5g
3 g
(show work and no links please)
*answer*
your answer will be 4.5 g
Explanation:
Vinegar is a solution with a 3% mass of acetic acid. How much acid is in 150 g of vinegar? (result: 4,5 g of acetic acid) solute acetic acid solvent water solution.
There are 16.5g of acid in 550 g of vinegar with a 3% mass.
HOW TO CALCULATE MASS:
According to this question, vinegar contains a 3% mass of acetic acid. This means that acetic acid is 3 out of 100 grams of vinegar. If there are 550g of vinegar, this means that the mass of acetic acid in the vinegar is calculated as follows:3/100 × 550= 0.03 × 550= 16.5gTherefore, there are 16.5g of acid in 550 g of vinegar with a 3% mass.Learn more at: https://brainly.com/question/15948514?referrer=searchResults
what does pen mean?.
Answer:
P = protons
E = electrons
N = neutrons
remember protons and neutrons (protons are positive and neutrons are neutral as you can already tell by their names) are found at the centre of the nucleus (positive mass). Whilst the electrons (negative) orbit around the shells
According to the text, fission occurs when the nucleus
two lighter nuclei.
Answer:
Splits into
Explanation:
Because fission reaction is divided into two or more pieces.
What features did you use to classify igneous rocks as extrusive or intrusive ?
Answer: Igneous rocks may be simply classified according to their chemical/mineral composition as felsic, intermediate, mafic, and ultramafic, and by texture or grain size: intrusive rocks are course grained (all crystals are visible to the naked eye) while extrusive rocks may be fine-grained (microscopic crystals) or glass.
Explanation: Hope this helped! :)
Answer:
Igneous rocks may be simply classified according to their chemical/mineral composition as felsic, intermediate, mafic, and ultramafic, and by texture or grain size: intrusive rocks are course grained (all crystals are visible to the naked eye) while extrusive rocks may be fine-grained (microscopic crystals) or glass ( ...
Unit 4.2 quiz chemistry
Answer:
H₂SO₄ is the correct answer sorry im late
What will happen when these mutations can no longer be killed by
antibiotics?
Answer:
Antibiotic resistance happens when the germs no longer respond to the antibiotics designed to kill them. That means the germs are not killed and continue to grow. It does not mean our body is resistant to antibiotics.
Potassium chlorate, a common oxidizing agent in fireworks and matchheads, undergoes a solid-state disproportionation reaction when heated:
4KClO3 (s) ⟶ Δ3KClO4 (s) + KCl (s).
Use ΔHf ° and S° values to calculate ΔG_sys ° (which is ΔGrxn °) in kJ at 25°C for this reaction.
Answer:
Explanation:
[tex]\text{From the information given:}[/tex]
[tex]\text{The chemical reaction is : } 4 KClO_{3(s)} \to 3 KClO_{4(s)} + KCl_{(s)}[/tex]
[tex]\text{To find} \ \Delta G^0_{rxn}\ \text{using the formula}: \\ \\ \Delta G^0_{rxn} = \sum n_p \times \Delta _f G^0 (Products) - \sum n_R \times \Delta _fG^0 ( Reactants) \\ \\ where; n_p = \text{no of moles of products } \ and; \\ \\ n_R = \text{no of moles of reactants }[/tex]
[tex]\implies G^0_{rxn} = 3 \times \Delta _fG^0 [KClO_4{(s)}] + \Delta_fG^0[KCl_{(s)}] - 4 \times \Delta _f G^0 [ KClO_3 (s) ][/tex]
[tex]\Delta _fG^0 \ values \ at \ 25^0 \ C (298 \ K) are\ given \ as:\\\\ \Delta _fG^0 [KClO_4(s)] = -303.09 \ kJ \\ \\ \Delta _fG^0 [KCl(s) ] = - 409.14 \ kJ \\ \\ \Delta_f G^0 [KClO_3_{(s)}] = -296.25 \ kJ \\ \\ replacing \ the \ above \ values \ into \ equation (1) ; then:\\ \\ \\\Delta G^0_{rxn} = 3 *(-303.09) + (-409.14) - 4*(-296.25) \ kJ \\ \\ = (-909.27 - 409.14 + 1185) \ kJ \\ \\ = -133.41 \ kJ \\ \\ \mathbf{\Delta G^0_{rxn} = -133.4 \ kJ }[/tex]
The standard free energy change of the reaction is -133 kJ.
From the reaction equation, we have; 4KClO3 ⇄ 3KClO4 (s) + KCl (s). The standard free energy of formation of each specie is given below;
ΔG°f KClO3 = -296.35 kJ
ΔG°f KClO4 = -303.09 kJ
ΔG°f KCl = -409.14 kJ
Hence;
ΔG°rxn = [3(-303.09)] + ( -409.14)] - [(4( -296.35))]
ΔG°rxn = (-909.27) + (-409.14) - (-1185.4)
ΔG°rxn = -133 kJ
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5. What types of surfaces would result in greater friction?
Answer:
Rough and irregular surface
these surfaces tends a lot of friction
but on smooth surface there is least friction
hope it helps
When an atom is changed into an ion, the is changed
number of protons
b. number of neutrons
number of electrons
d. mass number
Answer:
the number of electrons will end up changing
Explain this method (Froth floatation method)..........
Answer:
froth flotation is a technique commonly used in the mining industry. In this technique, particles of interest are physically separated from a liquid phase as a result of differences in the ability of air bubbles to selectively adhere to the surface of the particles, based upon their hydrophobicity.
Explanation:
Froth floatation method is commonly used to concentrate sulphide ore such as galena (PbS), zinc blende (ZnS) etc. (ii) In this method, the metaalic ore particles which are perferentially wetted by oil can be separated from gangue. (iii) In this method, the crushed ore is suspended in water and mixed with frothing agent such as pine oil, eucalyptus oil etc. (iv) A small quantity of sodium ethyl xanthate which act as a collector is also added. (v) A froth is generated by blowing air through this mixture. (vi) The collector molecules attach to the ore particles and make them water repellent. (vii) As a result, ore parrticles, wetted by the oil, rise to the surface along with the froth. (viii) The froth is skimmed off and dried to recover the concentration ore. (ix) The gangue particles that are preferentially wetted by water settle at the bottom.