Answer:
9 is your answer
Explanation:
coz anything above 7.0 is Base on PH paper !
Hope you got it.
Green light has a frequency of 6.01x10^14Hz what is the wavelength
Answer:
λ = 0.5×10⁻⁶ m
Explanation:
Given data:
Frequency of light = 6.01 ×10¹⁴ Hz
Wavelength of light = ?
Solution:
Formula:
Speed of light = wavelength × frequency
Speed of light = 3×10⁸ m/s
3×10⁸ m/s = λ × 6.01 ×10¹⁴ Hz
λ = 3×10⁸ m/s / 6.01 ×10¹⁴ Hz
Hz = 1/s
λ = 0.5×10⁻⁶ m
What are the coefficients that will balance the skeleton equation below?
___GaF3 +___KCN rightwards arrow___Ga(CN)3 + ___KF
A.
1, 3, 1, 3
B.
3, 1, 3, 1
C.
1, 1, 1, 3
D.
1, 3, 3, 1
1 points
QUESTION 6
The previous question is an example of what type of chemical equation?
A.
Synthesis
B.
Decomposition
C.
Single Re-Placement
D.
Double Re-Placement
1, 3, 1, 3
Explanation:
Ga - one on both sides
F - three on both sides
CN - three on both sides
K - three on both sides
But remember that CN was being multiplied by 3 on the right side already, meaning GA(CN)3 didn't mean a coefficient.
Answer:
Double re-placement
The two metals switched dance partners, that means it's a double.
When naming acids the prefix hydro- is used when the name of the acid anion ends in___
Answer:
hydrochloric acid
Explanation:
These anions usually have the ending “-ide.” As acids, these compounds are named starting with the prefix “hydro-,” then adding the first syllable of the anion, then the suffix “-ic.” For example, HCl, which is hydrogen and chlorine, is called hydrochloric acid. More complex acids have oxygen in the compound.
Plz answer as soon as possible!!
Question: what is a shared pair of electrons? What is an unshared pair?
Answer:
Explanation:
shared pair of electrons= covalent bond (sharing of electrons allows atoms to complete octet and gain stability)
unshared pair of electrons= lone pair/ non-bonding pairs
Calculate the percent composition of C6H12O6
Answer:
Did you just let your cat walk on your keyboard? XD
Could you explain this a bit better please?
I'll answer the question in the replies of this comment if you can give me a bit more information.
Explanation:
May I have brainliest please? :)
Question 2 (1 point)
Which of the following is the main reason the transition metals are able to exist in different forms?
а.
predictability in ability to bond
B.
unfilled d orbitals
C.
magnetic properties
D.
predictability in number of valence electrons
Answer:
B. Unfilled d orbitals
Explanation:
Las disoluciones comerciales de HCl (PF = 36.5 g/mol) típicamente son 39.0% P/P de este ácido en agua. Determine la molalidad de la disolución del HCl si la densidad de la misma es igual a 1.20 g/ml.
The translation of the question is
Commercial solutions of HCl (MP = 36.5 g / mol) are typically 39.0% W / W of this acid in water. Determine the molality of the HCl solution if its density is equal to 1.20 g / ml.
Answer:
Molality is 17.51 molal
Explanation:
We are given 39% w/w of HCl, this means for every 100g of this solution we have 39g of HCl in it.
to ease the calculation we assume we have 1L(1000ml) of this solution is present.
Density = mass /volume
1.20 = mass/1000
mass = 1200 g of solution
and we are given that 39% of this solution is will contain HCl
so
1200 * 39/100 = 468g of HCl present
no of moles of HCl = 468/36.5 = 12.82moles
mass of solution = mass of water + mass of acid
mass of water = mass of solution - mass of acid
Mass of water = 1200 - 468 = 732g of water
Molality = moles /masss of water in kg
= 12.82 *1000/732 =17.51molal
A geologist was looking at a new
mineral they found. The mineral
sample was gray, non-metallic, had
density of 3.8 g/mL, and a volume
of 48.3 mL
Of the observed properties listed
below, which is considered to be an
extensive property?
A Gray
B Metallic
C Density
D Volume
Answer:
D. Volume
Explanation:
Properties mentioned in the question;
colour = gray
Nonmetallic
Density = 3.8 g/mL
Volume = 48.3 mL
Of the mentioned, which is extensive ?
Extensive properties are those properties that are proportional to the amount of substance present.
The correct option is D. Volume. The other properties do not change with increasing or decreasing amount of the mineral
Below is a phase diagram for Carbon Dioxide. Use this diagram to answer the following question.
In this example we will start the Carbon Dioxide out at a temperature of -20oC and 1 atm of pressure. If the pressure was raised to 100 atm of pressure while still staying at -20oC, what phases would the Carbon Dioxide change between?
Metals react by losing valence electrons. Which of the alkali metals loses its valence electrons most easily? Explain.
Answer:
lol you have an aot profile pic
Which of the following equations is not balanced?
Explanation:
i think the answer is first and last
What is an important part of the endocrine system that acts as a chemical messenger?
hormones
arteries
spinal cord
neurons
Helpppppp i hate chemistry
I will give brainiest who helps me with the correct answer
I promise
5. Name the compound which contain Strontium, Fluorine, and Oxygen.
Options:
Strontium fluorate
Strontium fluoride
Strontium chlorate
Strontium fluorine
1. Matter is described by its properties which are:
a. the characteristics of a substance that make it similar to others
b. the characteristics of a substance that make it unique
c. the amount of houses it owns
d. anything that takes up space
2. Physical properties that we use to describe matter are:
a. mass, weight, volume and density
b. color, mass, weight, and density
c. density, mass, size and smell
d. mass, scale, volume and density
3. Mass is how _______ is in an object
a. much matter
b. much weight
c. much atoms
d. all of the above
4. The mass of an object remains constant, but its weight may change depending on:
a. the number atoms
b. the volume
c. the density
d. gravitational pull
5. Density can be described as:
a. the number atoms in an objects mass
b. the volume of an object plus its mass
c. the amount of mass in a given volume
d. something similar to weight
you dont have to answer them all. whatever you can do is fine
Answer:
3=a 5=b 4=d 2= b yea that's pretty much the answers
I WILL GIVE YOU BRAINLIEST HELP HELP HELP THE SUBJECT IS ACTUALLY SCIENCE What factor is deer in an ecosystem? Abiotic or Biotic? the subject is actually science
Answer: the answer is biotic because dear are a living factor
Explanation:
Please help me what is the answer
There are 20.8 moles of propanol
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
1.2 x 10⁵ molecules of propanol
[tex]\tt \dfrac{1.25\times 10^{25}}{6.02\times 10^{23}}=20.8~moles[/tex]
A beaker filled with 100 ml of water has an initial temperature of 23 degrees Celsius. After the beaker has been heated, the final temperature is 100 degrees celsius. The final volume of the water is 85.32 ml. After reaching the final temperature, there are bubbles throughout the water. What is this an example of?
Answer: The temperature of a beaker of water is 318.2 K.
Explanation:
Multiplying the temperature in Celsius by tells us how many Fahrenheit degrees above the freezing .
I WILL GIVE BRANLIEST HELP HELP HELP THE SUBJECT IS ACTUALLY SCIENCE What factor is a mushroom in an ecosystem? Abiotic or Biotic?
Answer: The answer is biotic
Explanation:Mushrooms are biotic because they are living things. Abiotic means non living, so these are factors in the environment that influence a living thing's life and chance of survival
Answer: jdusjzj bacteria germs
Explanation:
How much heat is required to raise the temperature of a 6.21 g sample of iron from 25.0 oC to 79.8 oC?
Answer:
151.1J
Explanation:
Given parameters:
Mass of iron = 6.21g
Initial temperature of iron = 25°C
Final temperature of iron = 79.8°C
Unknown:
Amount of heat = ?
Solution:
The amount of heat require to cause this temperature can be determined using the expression below;
H = m c (T₂ - T₁)
H is the amount of heat
m is the mass
c is the specific heat capacity
T is the temperature
Specific heat capacity of iron 0.444J/g°C
Insert the parameters and solve;
H = 6.21 x 0.444 x (79.8 - 25)
H = 151.1J
What is necessary to produce visible light from chemical compounds?
Answer:
the molecule must contain either pi bonds or atoms with non-bonding orbitals.
Explanation:
A non-bonding orbital is a lone pair on, say, oxygen, nitrogen or a halogen.
What color are the stars on the diagram with the highest surface temperatures?
Answer: surface temperature
Explanation:
HELP ME PLEASE ! I NEED HELP !
Which statement best completes the diagram?
Mexican culture
Most people live in
urban areas.
The most widely
spoken language is
Spanish
?
A. The most important literature is nonfiction
B. The most popular foods are vegetarian,
C. The most common religion is Catholicism.
D. Most people work as farmers.
Answer:
The answer is (c)
Explanation:
Answer:
C. The most common religion is Catholism.
Explanation:
I'm taking the quiz rn.
mass density and volume of molasses
Answer:
yo m ok mama
Explanation:
tjdjsjsjsjwbebsbshsh
4. Imagine you have a radioactive sample containing both Virtualium and decayed atoms of Virtualium. After analysis, you find it contains 10 atoms of Virtualium and 40 decayed atoms. How old is your sample? (Hint: You must use the half-life of Virtualium determined earlier in the activity.)
Answer:
25
Explanation:
One isotope of oxygen differs from another isotope of oxygen in *
Each isotope of Oxygen has a different number of neutrons
Further explanationThe elements in nature have several types of isotopes
Atomic mass is the average atomic mass of all its isotopes
Isotopes are atoms has the same number of protons but has a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
Some of the isotopes of oxygen are:
[tex]\tt _8^{16}O,_8^{17}O,_8^{18}O[/tex]
Each isotope has 8 protons and 8 electrons but has a different number of neutrons
For O-16: number of neutrons = 16-8 = 8
For O-17: number of neutrons = 17-8 = 9
For O-18: number of neutrons = 18-8 = 10
The insect population competes for _______________________ and nectar.
Answer:
eachother or different type of flower
Explanation:
Please help brainiest is award!
can someone describe what's a niche of a giraffe is
Answer: The niche of an organism is the role it plays in it's environment. With the giraffe's long neck, it doesn't have to compete with others and therefore lives harmoniously with other animals! (^-^)
Hope this helps!
*NEED HELP ASAP!*
Click on photo!
Please help meeee!!!
Answer:
What type of math are you taking.:)
Answer:
CaO
Explanation:
becoz
Ca O
2 2
you must crossing over the eqn
and get CaO
Calculate how much Carbon Dioxide IN GRAMS needs to be absorbed to
release 500g of oxygen during photosynthesis.
Answer:
687.5 g of CO2
Explanation:
We'll begin by writing the balanced equation for photosynthesis. This is illustrated below:
6CO2 + 6H2O —> C6H12O6 + 6O2
Next, we shall determine the mass of CO2 absorbed and the mass of O2 released from the balanced equation. This is illustrated below:
Mass of CO2 = 12 + (2 × 16) = 12 + 32
= 44 g/mol
Mass of CO2 from the balanced equation = 6 × 44 = 264 g
Molar mass of O2 = 2 × 16 = 32 g/mol
Mass of O2 from the balanced equation = 6 × 32 = 192 g
Summary:
From the balanced equation above,
264 g of CO2 were absorbed to release 192 g of O2.
Finally, we shall determine the mass of CO2 absorbed to release 500 g of O2. This can be obtained as follow:
From the balanced equation above,
264 g of CO2 were absorbed to release 192 g of O2.
Therefore, Xg of CO2 will be absorbed to release 500 g of O2 i.e
Xg of CO2 = (264 × 500)/192
Xg of CO2 = 687.5 g
Thus, 687.5 g of CO2 will be absorbed to release 500 g of O2.