Answer:
It has shone a light on our (I live in the u.s.) raciest past and now more then ever people are listening to science, even more so depending on it!
I feel sad when all the flowers
Answer:
find happy things to think about, stay strong xx
Answer: sorry u feel sad. y u feel sad?
Explanation:
We can talk if u want..
Which statement best describes the effects chemicals may have on the
environment?
A. The effects of chemicals on the environment are easy to observe.
B. Some chemicals may help the environment.
C. All chemicals harm the environment.
D. Chemicals must be released in large amounts to affect the
environment.
How many atoms of oxygen in the chemical formula 2Ca(ClO2)2?
2
4
6
8
Answer:
D.
Explanation:
Pleaseeee help pretty please
Answer:
A object made from iron .
Explanation:
I need helps plss!!!!
Answer:
Copper = 2 Boron = 12 (copper and boron combined = 14)
Explanation:
the number after the element is the amount of atoms there is
1What are 2 examples of proteins in the body?
Answer:
1. Insulin
2. Keratin
Explanation:
Proteins are one of the four biological molecules found in living systems. They are polymeric molecules made up of monomeric units called AMINO ACIDS. Proteins perform a wide variety of functions in the body ranging from enzymatic functions to structural roles.
Two examples of proteins found in the body are keratin, insulin. Keratin is a structural protein located in the skin, hair and nails while insulin is an enzymatic protein that aids in digestion.
Finally, what mass of Na2HPO4 is required? Again, assume a 1.00 L volume buffer solution. Target pH = 7.49 Acid/Base pair: NaH2PO4 Na2HPO4 PK = 7.21 [Na2HPO4] > [NaH2PO4] (NaH2PO4) = 0.100 M 12.0 g NaH2PO4 required [base] [acid] = 1.91 [Na2HPO4) = 0.191 M. There is 1.00 L of solution. Use the molar mass of the base (141.95 g/mol)to find the mass required. Cubmit Answer Try Another Version 3 item attempts remaining
Help Would Be Much Obliged!
Use the diagram below to answer the question.
An Energy Relationship in an Ecosystem
grass
mouse
Which statement best describes the energy relationship shown between the organisms?
Both produce their own energy.
b Only the mice need energy to survive.
They compete for the same source of energy.
Energy flows from the producer to the consumer.
Answer:Where is the diagram
Explanation:
If I have 0.275 moles of gas at a temperature of 75 K and a pressure of 1530 mmHg, what is the volume of the gas?
Answer: The volume of the gas is 0.84 Liters
Explanation:
According to ideal gas equation:
[tex]PV=nRT[/tex]
P = pressure of gas = 1530 mm Hg = 2.01 atm (760mmHg=1atm)
V = Volume of gas = ?
n = number of moles = 0.275
R = gas constant =[tex]0.0821Latm/Kmol[/tex]
T =temperature =[tex]75K[/tex]
[tex]V=\frac{nRT}{P}[/tex]
[tex]V=\frac{0.275atm\times 0.0820 Latm/K mol\times 75K}{2.01atm}=0.84L[/tex]
Thus the volume of the gas is 0.84 Liters
Answer please...
Answer
Answer:
d
Explanation:
The inflation of airbags is due to the breakdown of a single chemical substance into two separate substances.
Two molecules of sodium azide (NaN3) break down into sodium (Na) and nitrogen gas (N2) during the reaction.
How many sodium (Na) atoms are produced in the reaction?
1 Na atom
2 Na atoms
3 Na atoms
Answer:
The correct answer would be
B. 2 Na atoms
Explanation:
As seen in the picture below,
The solubility of potassium sulfate in water is 16 grams per 100
milliliter at 50 degrees centigrade. The smallest amount of water
which will dissolve 4 grams of this substance at the same temperature
will be
The answer is 25 grams for this question
What are bacteria? Chapter 7 lesson 2 AYU
Answer:
a group of unicellular microorganisms
Answer:
bacteria are a type of biological cell,they constitute a large domain of prokaryotic microorganisms,single celled. The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . ... Bacteria also have small, closed-circles of DNA called plasmids present in their cytoplasm
Explanation:
CAVA Chemistry 302/303B Unit 2 Lab Report
THE MYSTERY SALT
Imagine that you have a barrel of salt, but you forgot to label it. You know it must be either KNO3, or KCl.
You look at the solubility curves for KNO3 and KCl and you find that at 35 degrees Celsius, 100 g of water can dissolve about 30 g of KNO3, or about 37 g of KCl.
The solubility curves disappear. You only remember the solubility for both salts at 35 degrees Celsius in 100g of water. You know absolutely nothing else about these salts.
You have a scale, a hot plate, a thermometer, empty beakers, and plenty of water. You do NOT have any labeled KNO3 or KCl.
1. What property can you use to determine whether the barrel contains KNO3 or KCl? Hint: Name the property you could use to identify the mystery salt? (1 point)
2. Explain exactly what you would do. Another person should be able to perform your test by following your procedure. Do not bother with why you are doing these steps. Just tell me exactly what to do to perform this test. Hint: Do NOT include any discussion of your results. Save that for #3. (2 points)
3. How would your results identify the mystery salt? Hint: What exact results would indicate KNO3? What results would indicate KCl? (2 points)
Name:
Answers
1 (Property):
2 (Procedure):
3 (Results):
How to do dots and cross diagrams
Answer:
Draw circles to represent the electron shell of each atom overlapping the circles where the atoms are bonded. Add dots to represent the outer electrons of one type of atom (H). Add crosses to represent the outer electrons of the other type of atom (Cl). Make sure the electrons are always in pairs.
I’ll really appreciate it if you help me out on this one .
Answer:
3) All the animals and plants in a desert
4) Species becoming extinct
what is the meaning of flourish?
How do waves form?
Lesson 2.13
Question 4 options:
Ocean waves don't form
Ocean waves form as wind is absent.
Ocean waves form as wind moves across the surface, transferring its energy to the water.
Ocean waves form as salinity increases.
Answer:
It's the 4th one. waves are created by the wind
Answer:
C. Ocean waves form as wind moves across the surface, transferring its energy to the water.
Explanation:
hope this helps! c:
Brainliest to right answer
Answer:
False
Explanation:
The outer core is a liquid and is made out of nickel and copper
At what point in the cooking process is food typically seared?
Answer: when you look at the meat, and it looks beautiful like a crispy donut made by Gordan Ramsay
Explanation:
Hells Kitchen is kewl
5. How many Earths could fit between the Earth and the sun?
30
400
1200
12000
Please please please please help me
Carbon is more stable element than Silicon. True or False?
White arctic hares blending in with the white snow in their environment is an example of what type of camouflage?
A. hiding
B. protective resemblance
C. mimicry
D. protective coloration
Answer:
The answer to your question is A.
D. Protective coloration. Protective coloration, also known as "crypsis," is a defense mechanism used by animals to avoid detection by predators or prey.
An illustration of protective coloration, which is a sort of camouflage, is how white arctic hares blend in with the white snow around them. Animals use protective coloration, commonly referred to as "crypsis," as a defensive strategy to evade being seen by predators or prey.
In this instance, the white arctic hares' fur is the same shade as that of their snowy environment. Their chances of survival are increased by this merging, which enables them to remain unnoticed and effectively hidden from predators like polar foxes or birds of prey. They have a better chance of escaping or avoiding detection when they are well-camouflaged, making it difficult for predators to see them against the white background.
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My feet get hot as soon as I touch the sand. What kind of heat transfer occurred?
80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen (O2). What volume of carbon dioxide (CO2) is formed? 2CO + O2 → 2CO2
a. 200 ml
b. 120 ml
c. 80 ml
d. 40 ml
The volume of carbon dioxide is formed is Option C i.e. 80 ml.
Given that,
80 ml of carbon monoxide (CO) are reacted with 40 ml of oxygen ([tex]O_2[/tex]).Based on the above information, the calculation is as follows:
Here the volume should be 80ml
Therefore we can conclude that The volume of carbon dioxide is formed is Option C i.e. 80 ml.
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Plz help! I will give brainliest.
Answer:
D. 0.50
Explanation:
Use avogadro number to find the whole work.
Single-celled organisms need a microscope to be seen...
O True
O False
Answer:
True
Explanation:
Microscope is an instrument which is used to observe small objects. There are many types of microscope with a different magnitude.
How many ATOMS are in 7.32 moles of sulfur
dioxide?
Using the concept of Avogadro's number, the number of atoms present is 4.4 * 10^24 atoms.
What is Avogadro's number?Professor Avogadro provided a nice way of calculating the number of atoms in a molecules by the use of the Avogardro's number. Now we know that 1 mole of a substance contains about 6.02 * 10^23 atoms, molecules ions etc.
Hence;
1 mole of sulfur dioxide contains 6.02 * 10^23 atoms
7.32 moles of sulfur dioxide contains 7.32 moles * 6.02 * 10^23 atoms/1 mole
= 4.4 * 10^24 atoms.
Learn more about Avogadro's number: https://brainly.com/question/1445383?
6CO2 + 6H20 → C,H120, + 602
6. How many molecules of CO2 are presenta
7. How many atoms of oxygen are present in the reactants?
8. How many atoms of carbon are present in the products
9. How many total atoms are present in C.H120,?
10. Is the equation above balanced or unbalanced?
Explanation:
The equation of the reaction is given as;
6CO2 + 6H2O → C6H12O6 + 6O2
How many molecules of CO2 are present?
6 moles
How many atoms of oxygen are present in the reactants?
(6 * 2) + (6 * 1 ) = 12 + 6 = 18
How many atoms of carbon are present in the products?
(6 * 1 ) = 6
How many total atoms are present in C6H12O6?
6 + 12 + 6 = 24 atoms
Is the equation above balanced or unbalanced?
This is a balanced equation since the number of atoms of the elements is the same in the reactant and products.
What is the formula for silicon tetrachloride?
a
SiCl4
Ob
Si4Cl
С
Si₂C14
Od
SigCl₂
Answer:
[tex]\boxed {\boxed {\sf A. \ SiCl_4}}[/tex]
Explanation:
We are given the compound name: silicon tetrachloride.
Silicon is a metalloid and chlorine is a nonmetal, therefore we must use the rules of molecular compounds. Molecular compounds use prefixes to name the compounds. Break up the compound into 2 parts.
1. Silicon
The first element: silicon, has no prefix. Therefore, a prefix of mono (1) is implied.
2. Tetrachloride
The -ide suffix is added to the second element, so this is really chlorine. The prefix of tetra means 4.
So there is 1 silicon (Si) atom and 4 chlorine (Cl) atoms. The formula must be SiCl₄