Answers
Answer:
The answer is B
Explanation:
2Na + 2H2O = 2NaOH + H2
Related Questions
Two or more substances mingled together, but not chemically combined are known as a ?
Answers
Answer:
hdhdjsusjgsusnsmmdmdjsggwgebdubdudhdbr dhfbbdurbsbbdbdhdbd hdbdbvdbbdbd
Answer:
mixture of a material made up of two or more different substances, which are mixed but not combined chemically are retained
Add 2 teaspoons of baking soda and 2 teaspoons of citric acid to the foam cup. Add the half cup of water to the cup and stir. Is a chemical reaction taking place? How do you know?
Answers
Answer:
Yes a chemical reaction is taking place
Explanation:
In this cooking procedure, a chemical reaction is taking place because the citric acid and the baking soda are both chemical species combining together.
At the end a new produce is formed. It is accompanied by a release of heatThe stirring helps to increase the rate of chemical reaction between the citric acid and baking sodaAnswer:
The temperature for it is between 50-55 degrees
Explanation:
Match the element with its description. Match Term Definition Sodium A) Has properties of both metals and nonmetals Silicon B) Highly reactive gas Bromine C) Malleable, soft, and shiny Argon D) Nonreactive gas
Answers
Answer:
Sodium - malleable, soft, and shiny
Silicon - has properties of both metals and nonmetals
Bromine - highly reactive gas
Argon - non-reactive gas
Explanation:
Sodium is an alkaline metal. Just like other alkaline metals, it's malleable, soft, and shiny.
Silicon is a metalloid. Metalloids are elements that have properties of both metals and nonmetals.
Bromine a highly reactive chemical element. It is a fuming red-brown liquid at room temperature that evaporates to form a similarly coloured gas.
Argon is a noble gas. Just like other noble gases, it's non-reactive.
The area of a square is 200 cm2. What is an
estimation of its side?
a) 20 cm
C) 14 cm
b) 10 cm
d 50 cm
Answers
Answer:
14cm
Explanation:
s x s=area
s²=200cm²
s=14.1421356237cm
s=14cm
what oh yes but no? so yes if no but but no yes then no?
Answers
Answer:
ummmm id say god bless you :P
Explanation:
give me brainliest :D
What is the ratio of the side lengths on polygon FGHIJ to the corresponding side lengths on polygon ABCDE? Enter the ratio in the table. How does this ratio relate to the scale factor of the dilation?
Answers
Explanation:
this is the exact answer!!
Answer:
The ratio of the side lengths on FGHIJ to the corresponding side lengths on ABCDE is 1 : 2. The scale factor of the dilation that takes the size of ABCDE to the size of FGHIJ is 0.5. The ratio of corresponding side lengths is equal to the scale factor of dilation.
Ratio: 1:2
Explanation:
PLATO
the ratio is 1:2 all the way down for all 5 sections of the side lengths
Which substance is most likely metallic
Answers
You can put the picture there so we can see.
The substance which is most likely metallic is that with least number of valence electrons according to electronic configuration.
What is electronic configuration?
Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
Learn more about electronic configuration,here:
https://brainly.com/question/29184975
#SPJ6
How many atoms of oxygen are in the following compound? Ba3(PO4)2
Answers
Answer: 8 atmos
Explanation: In one formula unit of barium phosphate there are 3 atoms of barium (Ba) (2)(1) = 2 atoms of phosphorus (P) (2)(4) = 8 atoms of oxygen (O).
Please help me
What type of action is happening to location B?
Group of answer choices
subduction
divergent
convection
conduction
Answers
Answer:
divergent
Explanation:
I believe it is divergent.
In addition to having a blue color, what other characteristic do Neptune and Uranus share?
no rings
27 moons
no axis tilt
cold temperatures
Answers
Answer:
no rings
Explanation:
Answer:
d: cold temperatures
Explanation:
The
percent yield for the reaction in which 15.6 g of aluminum
hydroxide is reacted in excess hydrogen chloride gas is 92.5
%. What is the actual yield of aluminum chloride?
Answers
Answer:
24.6
Explanation:
2) A gas takes up a volume of 15 liters, has a pressure of 3.3 atm, and a temperature of
299 K. If I raise the temperature to 350 K and lower the pressure to 1050 mmHg, what is the
new volume of the gas?
3) A gas that has a volume of 28 liters, a temperature of 65 °C, and an unknown pressure
has its volume increased to 36 liters and its temperature decreased to 35 °C. If I measure the
pressure after the change to be 2.0 atm, what was the original pressure of the gas?
work too pls !!! thank you so much !!!
Answers
Answer:
Explanation:
[tex]\frac{P1V1}{T} = \frac{P2V2}{T2} = \frac{3.3 *15}{299} = \frac{1050*V}{760*350}[/tex]
v= 41.9 L
b) using the same formula as above [tex]P1= \frac{P2V2*T1}{T2 * V1}= \frac{36*2*338}{308*28} = 2.8 atm[/tex]
hope it helps
Which of the following is NOT naturally found as a diatomic
gas?
O Chlorine
O Neon
O Oxygen
O Nitrogen
O Hydrogen
Answers
Answer:
Neon
Explanation:
12. What is the smallest particle that can be called an element?
Answers
Answer:
Atom
Explanation:
Answer:
atom
Explanation:
oof its atom but i need 2p characters
According to newtons first law of motion, which of the following objects will change its motion?
Answers
A 20 ml solution of sugar with a concentration of
1.0M is diluted to 120 mL, what is the new
concentration?
Answers
Answer:
M₂ = 0.16 M
Explanation:
Given data:
Initial volume of solution = 20 mL
Initial concentration = 1.0 M
Final volume = 120 mL
Final/new concentration = ?
Solution:
Formula:
M₁V₁ = M₂V₂
by putting values,
1.0 M × 20 mL = M₂ × 120 mL
M₂ = 1.0 M × 20 mL / 120 mL
M₂ = 20 M.mL /120 mL
M₂ = 0.16 M
Chemists want to place 2 x 10^24 atoms of carbon in a chemical reaction. How would they obtain this amount?
Answers
Answer:
Explanation:
To determine what is been asked in this question, firstly, the formula to determine the number of atoms present in a substance must be used. The formula is
number of atoms = n × 6.02 × 10²³
where n is the number of moles
6.02 × 10²³ is avogadro's number
The number of atoms needed (to be present) has already been provided in the question as 2 × 10²⁴
Thus;
2 × 10²⁴ = n × 6.02 × 10²³
n = 2 × 10²⁴ ÷ 6.02 × 10²³
n = 3.32
The number of moles of carbon that will be placed in the reaction will be 3.32 but to determine the amount/mass of carbon that will be used in the reaction, we will use the formula
n = mass/molar mass
The molar mass of carbon is 12 g/mol
Thus;
3.32 = mass/12
mass = 3.32 × 12
mass = 39.84 g
The mass of carbon that will be required for the reaction will be 39.84, the procedure above shows how to obtain this amount.
Which statements describe or apply the principal of conservation of energy? Select all that apply.
* A. Energy cannot be created or destroyed; it can only be transferred from one location to
another.
B. Home insulation can reduce energy bills by conserving energy that would otherwise be lost.
* C. If the temperature in one location decreases, then the temperature in another location
increases.
D. The total energy in a closed system such as Earth stays the same.
E. Nonrenewable energy resources can be conserved, but they will eventually run out.
Answers
Answer:
A, C, and D
Explanation:
The correct options that apply to the principal conservation of energy are A, C, and D.
A is correct because energy can neither be created nor destroyed. However, energy can be transfered from one location to another or be converted from one form to another. Whether transferred to converted, the magnitude remains the same.
C is correct because energy cannot be destroyed but can be transferred or converted. Hence, if a body or a location loses temprature, then the loss is being gained by another body or location.
D is also correct. A closed system is a system that does not exchange matter with its surroundings. Hence, the total energy remains the same within the system.
Answer:
The total energy in a closed system such as Earth stays the same.
Explanation:
The simplest statement of the law of conservation of energy is that energy can neither be created nor destroyed but can be converted from one form to another.
A typical illustration of this principle of conservation of energy is a closed system of which our universe is an important example.
The total amount of energy in the universe is always a constant. Energy lost in one part must be equal to the energy gained on the other part.
Which best describes the difference between radiation and conduction? (1 point)
A.) Conduction cannot happen when both objects are solids.
B.)
Conduction requires two objects to be in physical contact.
C.)
Conduction can occur between two objects that are very far apart.
D.)
Conduction decreases the movement of the atoms in both objects.
Answers
Answer:
B) Conduction requires two objects to be in physical contact.
Explanation:
Conduction is when two objects are directly touching each other. So, the objects must come in physical contact with each other.
Is a hydrogen bond a true chemical bond?
Answers
Answer:
A hydrogen bond is the electromagnetic attraction created between a partially positively charged hydrogen atom attached to a highly electronegative atom and another nearby electronegative atom. A hydrogen bond is a type of dipole-dipole interaction; it is not a true chemical bond.
Explanation:
Given the nuclear equation: 19Ne → X + 19F What particle is represented by X?
alpha
beta
neutron
positron
Answers
Answer:
Beta
Explanation:
Answer:
Positron
Explanation:
Castle learning
What would you expect the charge on a bromide ion to be? Why?
Answers
The Element Bromine belongs to the 7th group "THE HALOGENS" in the periodic table. The general oxidation number of the Halogens is -1 thus Charge on bromide ion is expected to be -1.
______________________________________CO, + H2O –H^2 CO^3 The reaction is which type of chemical reaction?
Answers
Answer:
Combination or synthesis reaction
Explanation:
The reaction is a combination or synthesis reaction.
Let us write the reaction equation:
CO + H₂O → H₂CO₃
A combination or synthesis reaction is one in which a single product forms from two or more reactants. The formation of a compounds from the union of their constituent elements falls into this category of reaction.
The combination of carbon monoxide and water to give hydrogen carbonate is one of such reaction.N2 + 3 H2 --> 2 NH3
The balanced equation above indicates that if 2 moles of N2 react, then
2 moles of H2 will also react
3 moles of H2 will also react
4 moles of NH3 will be produced
2 moles of NH3 will be produced
Answers
Answer:
4 moles of NH3 will be produced
Explanation:
The reaction expression is given as:
N₂ + 3H₂ → 2NH₃
We have to check that the equation of the reaction is balanced.
Then;
if 2 mole of N₂ reacts;
1 mole of N₂ will react with 3 mole of H₂ to produce 2 mole of NH₃
2 mole of N₂ will react with (2x3)mole of H₂ to produce (2x2)mole of NH₃
6mole of H₂ to produce 4 mole of NH₃
Answer:
According to the balanced chemical equation N2 + 3 H2 --> 2 NH3, for every 1 mole of N2 that reacts, 3 moles of H2 are required to react completely to form 2 moles of NH3. Therefore, if 2 moles of N2 react, then 6 moles of H2 will also react to form 4 moles of NH3.
So the correct answer is: 6 moles of H2 will also react, and 4 moles of NH3 will be produced.
Explanation:
Choose all the answers that apply.
Electricity
can be created by moving magnets through a coll of copper wire.
can be used to create a magnetic field.
is caused by moving protons.
flows from negative to positive.
is created by the movement of electrons.
Answers
Answer:
can be created by moving magnets through a coll of copper wire.
can be used to create a magnetic field.
flows from negative to positive.
is created by the movement of electrons.
Explanation:
What is the electron configuration of an atom of Boron with a charge of +3
Answers
Answer:
2
Explanation:
B has a configuration as 2,3 so when it becomes + 3 that means it has given out its 3 electrons to be stable so it becomes 2
Which of the following was not used as evidence to support
continental drift?
A. Continents fitting like puzzle pieces
B. Comparison of regional monsoon variability
C. Similar fossilized organisms found throughout each continent
D. Matching bedrock in Africa and South America
Answers
Answer:
B.
Explanation:
Lol notes brought everything but B. Up
define Nuclear Fission with an example of it
Answers
Answer:
Fission is the splitting of an atomic nucleus into two or more lighter nuclei accompanied by energy release. ... The energy released by nuclear fission is considerable. For example, the fission of one kilogram of uranium releases as much energy as burning around four billion kilograms of coal
Explanation:
In the liquid, there are hydrogen bonds that form between molecules of water and covalent bonds that form between hydrogen and oxygen within a water molecule. Which statement(s) are true about When water is boiling, which statement(s) are true?
a) The covalent bonds between hydrogen and oxygen are broken.
b) The hydrogen bonds between water molecules are broken.
c) both are true
d) neither are true
Answers
Answer:
c
Explanation:
What is another name we use to refer to "energy levels"?
Answers
Answer:
Energy state
Explanation: