Na2o + h2so4 ———> na2so4 + h2o
Can anyone balance this please!!??
Answers
Answer:
The equation is already balanced. There's an equal number of materials on each side of the equation.
Related Questions
what is the main material that make up the tusk of an elephant
Answers
Answer:
Ivory
Explanation:
The outside of the tusk is made of ivory, but 2/3 of the tusk is their head, made of tissue. But I think the answers Ivory. Thats the reason why poachers go for the tusks. Because humans like ivory :/
A science teacher placed a magnesium wire in flame.the wire turned white where the flame touched it. which statement best explains the chemical change
A. a new substance formed
D. the magnesium wire changed shape
the subject is science
Answers
Answer:
A
Explanation:
The correct answer would be that a new substance is formed.
When magnesium wire is burnt in the presence of oxygen, the wire reacts with oxygen and a new substance known as magnesium oxide is formed. The new substance is usually white in color and the equation of the reaction is as below:
[tex]2 Mg (s) + O_2 (g) --> 2 MgO (s)[/tex] (white)
Hence, the correct option is A.
Answer:
Explanation:A new substance formed. Promise.
The composition of a compound is 6.27 g calcium and 1.46 g nitrogen.
Calculate the empirical formula.
Answers
Answer:
Ca₃N₂
Explanation:
The empirical formula is the simplest whole-number ratio between moles of each element present in a molecule.
Thus, we need to convert mass of each atom to moles and find the ratio between these as follows:
Moles N:
1.46g * (1mol / 14.0067g) = 0.104moles
Moles Ca:
6.27g * (1mol / 40.078g) = 0.156moles
The ratio between Moles N and moles of Ca is:
0.156moles / 0.104 moles = 1.5
That means there are 1.5 moles of Ca per mole of N. As empirical formula must be given in whole numbers:
There are 3 moles of Ca per 2 moles of N.
Empirical formula is:
Ca₃N₂how does carbon dioxide get into the atmosphere?
Answers
Answer:
By condensation.
Explanation:
Have a nice day dear
The large holes that can form in Limestone eventually lead to the formation of caves and caverns.
True or False?
Answers
True
Explanation:
Because it would be false That Caves and caverns are common in dry regions where these is a layer of limestone near the surface.
.A person is unable to see distinctly the objects placed at large distances but is able to read a book comfortably. Name the defect of vision he is suffering from
Answers
Answer:
The defect of vision suffered by the person is Myopia
Explanation:
The person can't see farther objects but is able to read a book which is placed closely to the eyes, using these observations the person is suffering from MYOPIA(nearsightedness) in which observer see close objects clearly but farther objects appear blurred.
The light entering the eye isn't correctly bent, the eyeball becomes big , or the eye lens become too converging, which converges the light ray in front of the cornea
This defect can be cured by using concave lenses.
Any 1 help with Chemistry here??
Answers
Which chemical equation below is balanced to correctly represent the Law of Conservation of Mass?
Answers
Answer:
The 3rd equation.
Cl2 + 2NaBr —> 2NaCl + Br2
Explanation:
The law of conservation of matter (mass) states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another. This implies that unbalanced chemical equation shows that matter (mass) has been created or destroyed.
Now, we shall determine which equation is balanced as follow:
1. 2Cl2 + NaBr —> 2NaCl + Br2
Reactant >>>>>>>> Product
4 Cl >>>>>>>>>>>> 2 Cl
1 Na >>>>>>>>>>>> 2 Na
1 Br >>>>>>>>>>>> 2 Br
Thus, the equation is not balanced.
2. Cl2 + NaBr —> NaCl + Br2
Reactant >>>>>>>> Product
2 Cl >>>>>>>>>>>> 1 Cl
1 Na >>>>>>>>>>>> 1 Na
1 Br >>>>>>>>>>>> 2 Br
Thus, the equation is not balanced.
3. Cl2 + 2NaBr —> 2NaCl + Br2
Reactant >>>>>>>> Product
2 Cl >>>>>>>>>>>> 2 Cl
2 Na >>>>>>>>>>> 2 Na
2 Br >>>>>>>>>>>> 2 Br
Thus, the equation is balanced.
From the illustration made above only the 3rd equation is balanced. And this is in line with the law of the Conservation of matter (mass) as matter (mass) was not created nor destroyed during the chemical reaction but was transferred to other forms.
state the volume of SO2 and O2 at RTP that would produce 180cm3 of SO3
Answers
Answer:
(180 cm^3 SO3) x (2 mol SO2 / 2 mol SO3) = 180 cm^3 SO2
(180 cm^3 SO3) x (1 mol O2 / 2 mol SO3) = 90 cm^3 O2
SCIENCEEEE!!!!! HELPPPP!!!!
Answers
pretty sure it's both are physical changes.
Answer:
I would say Both are only physical changes.
Explanation:
Melting wax isn't creating a new substance, or changing the atomic structure. The wax is only changes from a solid to a liquid state. Sanding a piece if wood is usually done with sandpaper, which can physically be done with your hands. Hope this helped :)
Which of the following statements is true?
A. Cations are always larger than the atoms from which they form.
B. Cations are always the same size as the atoms from which they form.
C. Anions are always larger than the atoms from which they form.
D. Anions are always smaller than the atoms from which they form.
Answers
Answer:
B. Cations are always the same size as the atoms from which they form.
Explanation:
That's i read in the book
"Anions are larger in size than the atoms from which they form" is a true statement. Therefore, option (C) is correct.
What are anions and cations?A cation contains more protons than electrons in it, which give it a net positive charge. A cation can be formed by losing one or more electrons must be lost by atoms.
The charge on the ion will be equal to the number of electrons lost as indicated after the chemical symbol. For example, silver (Ag) has lost one electron to become Ag⁺. The size of the cation is always smaller than the atom from which it formed.
An anion contains more electrons than protons which gives it a net negative charge. An anion can be formed by gaining one or more electrons or typically pulled away from other atoms.
The charge of the anion will be equal to the number of electrons gained, which is indicated after the chemical symbol. For example, chlorine (Cl) accepts one electron to become Cl⁻.
The size of an anion is greater than the atoms from which it formed as the number of electrons in the ion increases and effective nuclear charge decreases.
Learn more about anions and cations, here:
https://brainly.com/question/20435320
#SPJ2
I don’t really have a question... and my teacher says I need to give one related to this reading above :/
Can somebody plz give one that makes sense (WILL MARK BRAINLIEST)
Answers
Answer:
Just say I wonder why teachers give homework :/
Explanation:
What is chemical potential energy?
A. Energy stored by atoms
B. Energy stored in height differences
C. Energy from gravity
D. Energy of motion
Answers
Answer:
A
Explanation:
please pick me for brainliest
Answer:
D
Explanation:
All about the motion.
A crystal is made up of _____
Answers
Explanation:
Atoms of the same element or atoms of different elements.
BEBE
Use the activity series below to predict whether the following reactions will take place.
803
F2 > Cl2 > Br2 > 12
Cl2 + 2Rbl - 2RbCI+ 12
12 + NiBr2 - Nil2 + Brz
yes
yes
no
0
no
Answers
Reaction 1 : yes
Reaction 2 : no
Further explanationThe metal activity series is expressed in voltaic series
Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au
The more to the left, the metal is more reactive (easily release electrons) and the stronger reducing agent
The more to the right, the metal is less reactive (harder to release electrons) and the stronger oxidizing agent
So that the metal located on the left can push the metal on the right in the redox reaction
From activity series of Halogen :
F₂>Cl₂>Br₂>I₂
F₂ is the strongest oxidizing agent
1. Reaction
Cl₂ + 2Rbl - 2RbCI+ I₂
Cl₂>I₂⇒reaction can occur⇒yes, reactions will take place.
2. Reaction
I₂ + NiBr₂ - NI₂ + Br₂
Br₂>I₂⇒Reaction can't occur⇒no, reaction will not take place
How many molecules are in 32 grams of NH3?
Answers
Answer:
1.87897962011728
Explanation:
IMMA WAIT FOR MY BABY EVEN IF IT TAKES ALL NIGHT !!!!!!
Answers
Answer:
um okay lol
Explanation:
Answer:
Oh ok
Explanation:
Also can u pls mark me brainliest im new pls
What is the final temperature when 625 grams of water at 75.0° C loses 7.96 x 104 J?
The specific heat of water is 4.18 J/gCº.
Answers
Answer: A copper cylinder has a mass of 76.8 g and a specific heat of 0.092 cal/g·C. It ... J ql = mwcwΔTw. ΔTw = ql/(m x c). ΔTw = 7.96 x 10. 4. J/(625 g x 4.18 J/g·K) = 30.5 ...
Explanation:
Match the definitions on the left with the terms on the right.
Answers
Answer:what defino? I don’t see nun
Explanation:
Answer:
answer in picture
Explanation:
A chef fills a 60-ml container with 45.3 g of cooking oil. What is the density of the oil?
Answers
Answer:
0.76 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{45.3}{60} \\ = 0.755[/tex]
We have the final answer as
0.76 g/mLHope this helps you
which of the following is not the same as 0.032 liters?
a)32 mL
b)0.00032 hL
c)320 cL
Answers
Which of these is an example of physical change
A) iron melting
B) steel rusting
C) paper burning
D) wood decaying
Answers
Answer:
it is A mark me big brain pls
Explanation:
02.04 Slide #2 Fill in the blanks based on the videos T Speed of reaction. When the of the reactants are moving too in a chemical reaction, there are fewer between particles. This means there are fewer for particles to correctly. Here you see two particles moving slowly. Though these particles seem ready to react, their slow speeds do not allow them to have the to react in this particular case. Instead, these particles just bounce apart. Particle alignment. If the particles of the reactants in a are not aligned Just right during a collision, they will away from one another. Here you see two particles moving toward each other. However, they are not facing each other in the right way to react. These particles just bounce away from each other.
Answers
Answer:
kylee is the best
Explanation:
What type of relationship exists between
dissociation constant and pk values
A Linear
B Directly Proportional
C Direct
D Inverse
Answers
Answer: D inverse . The product of Ka and Kb equals the auto-dissociation constant for water.
Explanation: i hoped that helped and Plz give as a brainliest !!
SIMPLE ANSWERS ONLY I ALREADY GOOGLED AND DIDN'T FIND ANYTHING PLEASE ANSWER IN YOUR OWN WORDS.
How is atomic mass calculated for elements on the periodic table.
Answers
Explanation:
The atomic mass of elements on the periodic table are derived from the proportion of the geonormal abundance of the different isotopes of an element.
Using a mass spectrometer, the proportion/percentage/fraction by which each of the isotopes of an element occurs in nature is determined. This proportion is the geonormal abundance. From this the atomic mass of the element can be derived. Simply multiply the mass by the abundance and sum the values for the same isotopes together.can someone solve c and d?
Answers
Answer:
Na + + e - → Na.
Pb 2+ + 2e - → Pb.
2H + + 2e - → H 2
Explanation:
HELPPPP!!! I NEED IT VERY MUCHHHH
Answers
Answer:
mabye C at least if its not right sorry .
How many valence electrons would be shown in the electron dot diagram of a helium atom?
Answers
Answer:2
Explanation:
The number of valence electrons for a helium atom is 2. This can be confirmed by looking at the electronic configuration.
Helium atom:Helium is placed in the noble gas series as it has certain properties of it. The atomic number of helium is 2. Thus, it has two electrons in its outermost shell but it has completely filled orbital.
Electronic configuration of He = 1s2
Thus, for drawing the electron dot structure, there are two valence electrons.
Find more information about Helium atom here:
brainly.com/question/26226232
As elements go across from left to right in a period, they get closer to filling up their outermost electron energy shell. Their protons hold tightly onto their electrons. As they get closer to filling up their outermost electron energy shell, would it be harder or easier to take an electron away from them?
Answers
Answer: it would be harder to take an electron away.
Explanation:
The ionization energy is the energy required to remove an electron from the valence shell of an isolated gaseous atom of an element.
The atomic size decreases as we move from left to right in a period because the valence shell come closer to the nucleus as we move from left to right. Thus, the removal of electron from the valence shell becomes difficult due to greater attraction between nucleus and valence electron. Thus, the ionization energy increases from left to right in a period.
Thus it would be harder to take an electron away.
2. If 300.0 mL of a 2.5 M solution of nitric acid is added to 500.0 mL of water, what is the molarity of the
dilute solution?
Answers
Answer:To calculate the Molarity of a 70 wt. % Nitric Acid the number of moles of HNO 3 present in 1 liter of acid needs to be calculated. Knowing the density of the acid to be 1.413 g/mL, we can calculate the weight of 1 L of 70% HNO 3 to be 1413
Explanation: