Answer:
Option D
Explanation:
Molarity (M) of any solution is equal to the number of moles (n)of solute in it divided by total volume of solution (V)
Mathematically, it can be represented as
[tex]M = \frac{n}{V}[/tex]
Substituting the given values, we get-
[tex]M = \frac{10}{5} = 2[/tex]
Hence, option D is correct
Help please
If you have 100 grams of a radioactive isotope with a half-life of 10 years:
Part A How much of the isotope will you have left after 10 years?
Part B. How much of the isotope will you have left after 20 years?
Part C. How many half-lives will occur in 40 years?
fill in the chart
Answer:
Time >> Amount 0 100 g10 100 g / 2 = 50 g20 50 g / 2 = 25 g30 25 g / 2 = 12.5 g40 12.5 g / 2 = 6.25 g1. Place these unknown pH test papers in order from most acidic to most alkaline.
B
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14
pH color chart
A. Paper D, paper C, paper B, paper A
B. Paper B, paper A, paper C, paper D
CPaper C. paper D paper A, paper B
D. Paper D paper o paper A, paper B
Answer:
D. Paper D, paper C, paper A, paper B
Explanation:
Please check the attached image for a diagram showing clearly the pH colour chart
pH measures how acidic or alkaline a solution is. The pH scale ranges from 1 - 14
Solutions with a pH less than 7 are acidic
Solutions with a pH equal to 7 are neutral
In the image, test papers D and C occur on the left, thus, they are acidic
Solutions with a pH greater than 7 are alkaline
pH test papers are used to test to test how acidic or alkaline a solution is
Fractional distillation is used to separated
A, an insoluble substance from a soluble volatile substance
B. substances which are adsorbed differently, and which differ in their solubility in a solvent
c. liquids with differing boiling points
D gas, liquid or solid impurities from a mixture
Answer: Fractional distillation is used to separate liquids with differing boiling points
Explanation:
Sublimation is used to separate volatile substance from a non volatile substance where volatile substance gets converted from solid to gas.
Fractional distillation is separation of a liquid mixture into fractions which differ in boiling points by means of distillation by use of a fractionating column.
Chromatography is a separation method where different rates of adsortion of different components is used to separate substances.
NaCl +H₂SO4=HCl +NaHSO4
Balance this equation
Answer:
Actually this question is already balanced
Explanation:
so, the answer of this question is same as the answer
a partial forest food-web is shown
Answer:
Bobcats are consumers of marmots and grouses
Explanation:
CAN I PLEASE GET SOME HELP?
You accidentally spilled an unknown liquid on a lab bench. It spreads out across the lab bench and quickly evaporates. What can you infer about the structure of the molecules? Explain your reasoning.
Answer:
See note under explanation
Explanation:
That the particles have mostly non-polar structures or, have a very low degree of electronegativity (i.e. very low or no attractive interactions) so that particle - particle interaction favors the gas phase when not in an equilibrium based environment. That is, a closed container of liquid were liquid phase is in equilibrium with gas phase. However, when not in a closed container; i.e., spilled, particles evaporate rapidly moving into the gas phase from liquid phase.
Hope this helps. :-)
Today is Earth day. What is one thing that you can do at school or at home to help protect our home, planet Earth?
A boulder sits at rest on top of a mountain. What conclusion can be made about the forces acting on the boulder
Explanation:
Since, the boulder is at rest. This means that there is an equilibrium of forces acting on the boulder.
According to principle of equilibrium of forces a body can be in position of rest only when net force acting on body is zero for translation equilibrium and net moment acting on the body must also be zero for rotational equilibrium.
Therefore, net forces and net moment acting on the boulder is zero.
GIVING BRAINLIEST!! PLEASE HELP
The boiling points of the halogens F2, Cl2, Br2 and I2 increase in that order. This is best attributed to the differences in _____________________________.
A)covalent bond strengths
B)dipole forces
C)london dispersion forces
D)hydrogen bonding
Answer:
huh
Explanation:
!!!PLEASE HELP!!!
Circle the element in each of the following pairs with the greater atomic size:
a) lithium or boron
b) magnesium or strontium
c) cesium or lead
d) sodium or argon
during photosynthesis, water and carbon dioxide react to form oxygen and sugar how do the products differ for the reactions?
Answer: I think its that cellular respiration results in water, carbon dioxide, and ATP but photosynthesis results in oxygen and glucose so they are opposites
Explanation: HAVE A GREAT DAY :)
How many molecules of ammonia would there be in 40.0 grams of ammonia?
1.42x10^24 molecules
40.0 grams NH3 (6.02x10^23/17.0 grams NH3)= 1.42x10^24 molecules
Weathering of Earth's surface can have which of the following effects? *
8 points
Building mountains
Creating hurricanes
Breaking down rocks
Causing lava flow
Foods that are basic can be identified by what taste
A. Salty
B. Sour
C. Bitter
D. Sweet
Answer:
Foods that are basic can be identified by its bitter taste. Option C
2. A sample of gas has a pressure of 195 kPa and a volume of 3.50 L. If the pressure
is increased to 150 kPa, what is the new volume?
Answer:
4.55 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we're finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{195000 \times 3.5}{150000} = \frac{682500}{150000} \\ = 4.55[/tex]
We have the final answer as
4.55 LHope this helps you
please help! What is the minimum temperature needed to dissolve at least 10 g of KClO3?
28 ⁰C
35 ⁰C
20 ⁰C
15 ⁰C
At least 10 g of KClO3 must dissolve at a temperature of 35 0C. As a result, choice (C) is accurate.
What is meant by Boiling point?The temperature at which a liquid's vapor pressure equals the pressure around it and the liquid turns into a vapor is known as the boiling point of a substance
A liquid's boiling point varies depending on the atmospheric pressure in the area. Lower pressure, or partial vacuum, results in a liquid's boiling point being lower than it would be under atmospheric pressure.
As a result, water boils at 99.97 °C (211.95 °F) at sea level but at 93.4 °C (200.1 °F) at 1,905 m (6,250 ft)[3] altitude under standard pressure. Different liquids will boil at various temperatures at a given pressure at the freezing point
Learn more about Boiling point, from :
brainly.com/question/25777663
#SPJ3
URGENT PLEASEEEE HELP
A functional group is a specific arrangement of atoms in an organic compound that is capable of characteristic reactions
Is this true of false
PLEASE HELPP NO LINKSS
Answer:
That is true
Explanation:
:D
indica lo que harías en el laboratorio para preparar: 100 mL de una disolución al 2% V/V de etanol.
Answer:
Explanation:
Mide 2mL de etanol, añadelo a un matraz aforado, pon agua hasta llegar a 100mL
When the Florida summer brings hot temperatures, what seasonal changes can be seen in plants?
Answer choices:
Florida plants are full of leaves and make fruit.
Florida plants begin to sprout seeds.
Florida plants go dormant from the heat.
Florida plants start to change color.
Answer:I think it’s the first option because of high temperatures there would be more evaporation and precipitation which would give plants water and exposure to the sun makes plants make food because of the photosynthesis process.
Explanation: Have a nice day and hope this helps : )
The rate law, rate constant, and reactant concentrations for the reaction of nitrogen dioxide with oxygen are given. What is the rate of the reaction under these conditions?
R = k[NO]2[O2], k = 7,000 M-2 • s-1
[NO] = 0.040 M, [O2] = 0.060 M
A. R = 7,000 M-2 • s-1
B. R = 16.8 s-1
C. R = 0.672 M • s-1
D. R = 0.040 M2 • s-1
Answer:
Its C.
.
.
.
.
.
.
.
.
.
.
Answer:
Person above is correct
The answer is C
Explanation:
The image shows groundwater zones.
Which number represents the water table?
1
2
3
4
Answer:
2
Explanation:
Answer:
2 in other words b
Explanation:
its right
pls help me
What is the mass in grams of 2.64 mol of sulfur dioxide, SO2?
Answer: The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles SO2, or 64.0638 grams.
Hope it helps.
Why does a graph of CO2 emissions through time have annual fluctuations that correspond with the seasons?
I give Brainliest! Please no links
Answer:
The amount of CO2 found in the atmosphere varies over the course of a year. Much of this variation happens because of the role of plants in the carbon cycle. ... As a result, plants take more CO2 out of the atmosphere during the warm months when they are growing the most.
It is defined as the number of particles per mole of a substance. *
a. Molar ratio
b. Mole
c. Avogrado's number
Answer:
Avogadro's number
Explanation:
Avogadro's number
defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.
4) What is the order of the energy pyramid.?
DNA is compacted into rod-like structures called
and a
segment of the DNA code on it is called a ?
Answer:
Gene
Explanation:
1. How is energy transported from where it is generated to homes?
2. How is some energy lost as it is transmitted and how can this be minimized?
Plz answer fast its worth 30 points
Answer:
1. (put in simpler words so no one knows you got it off of brainly)
The electricity that flows to our homes is generated in power stations. From here, it flows through large transmission lines, which carry it to substations. Finally, distribution lines carry electricity from substations to houses, businesses, and schools.
2. (put in simpler words so no one knows you got it off of brainly)
The transmission over long distances creates power losses. The major part of the energy losses comes from Joule effect in transformers and power lines. The energy is lost as heat in the conductors. This can be minimized by
answer choice 1: reducing technical losses including: replacing incorrectly sized transformers, improving the connection quality of conductors (power lines), and increasing the availability of reactive power by installing capacitor banks along transmission lines.
answer choice 2: (just in case answer choice 1 isn't what you're looking for)
You can reduce losses in your home by spreading out your electricity use evenly throughout the day, instead of running all your appliances at once.
Explanation:
hope this helped <3
Which of the following is true of oxygen?
A. Oxygen is an element because its most basic unit is a single type of atom.
B. Oxygen is a compound because its most basic unit is a single type of atom.
C. Oxygen is a mixture because its most basic unit contains more than one particle.
D. Oxygen is a compound because its most basic unit contains more than one type of particle.
Answer:
A. Oxygen is an element because its most basic unit is a single type of atom.
Explanation:
Oxygen is the chemical element with the symbol O and atomic number 8.
Can someone use (biodiversity) in a sentence
Answer:
There is a lot of biodiversity in this seafloor.
Explanation:
Biodiversity is just the diversity in species and animals in a certain environment.
What is the density of an object with the mass of 204 grams? It displaces 17ml of water. please help!
Answer:
12 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
We have
[tex]density = \frac{204}{17} \\ = 12[/tex]
We have the final answer as
12 g/mLHope this helps you