Answer:
56.64°c
Explanation:
its obtained from facts that heat gained by water=heat lost by calorimeter
Explain why and argon atom would not bond with other atoms?
Answer:
Argon is a noble gas. Noble gases do not bond with others atoms easily because they already have a full outer electron shell :)
plz anwser this a b c d
browser on for the first question the answer is beaker a .
for the second question it is a (I think),
Explanation:
land heats up faster than water so if there's more water then it will be colder. because it's kind of diluted
Pure gold has a density of 19.3 g/ml. A gold bracelet has a mass of 412 g and a volume of 22.4ml. Is the bracelet pure gold? Explain.
Answer:
[tex]\boxed {\boxed {\sf No, \ the\ densities \ aren't \ equal}}[/tex]
Explanation:
First, let's find the density of the gold bracelet.
Density can be found by dividing the mass by the volume.
[tex]d=\frac{m}{v}[/tex]
The mass of the bracelet is 412 grams and the volume is 22.4 milliliters.
[tex]m=412 \ g\\v= 22.4 \ mL[/tex]
Substitute the values into the formula.
[tex]d=\frac{412 \ g}{22.4 \ mL}[/tex]
Divide.
[tex]d=18.3928571 \ g/mL[/tex]
Let's round to the nearest hundredth.
The 2 in the thousandth place tells us to leave the 9 in the hundredth place.[tex]d \approx 18.39 \ g/mL[/tex]
The density of the bracelet is about 18.39 grams per milliliter.
Now, let's compare the bracelet's density to pure gold's density.
[tex]bracelet= 18.39 \ g/mL\\pure \ gold=19.3 \ g/mL[/tex]
It's quite clear that the two values are not equal. Therefore, the bracelet cannot be made of pure gold, because it's density doesn't match pure gold's.
True or False Hydrogen is amable used to in limpa
Answer:
False
Explanation:
Answer:
false
Explanation:
false
When aluminum atom loses its valence electron, what is the charge on the resulting
ion?
Answer:
3+
Explanation:
i looked up the answer :)
if 100.0 grams of copper (cu) reacts completely with 25.0 grams of oxygen, how much oxygen will completely react with 140 grams of copper?
Answer:
35 grams of oxygen
Explanation:
The law of constant proportion or composition states that the elements that combine to form a chemical compound combine in fixed whole number ratios.
Therefore, the ratio of the that make up any pure sample of a given compound are present in the same mass ratio
The given parameters are;
The mass of oxygen that reacts completely with 100 grams of copper, (cu) = 25.0 grams
Therefore;
1 gram of copper completely reacts with 25/100 = 1/4 grams of oxygen
140 grams of copper will completely react with 140 × 1/4 = 35 grams of oxygen
∴ 35 grams of oxygen will completely react with 140grams of copper.
What is the result of excess nutrients (nitrates) in North Carolina waters?
A.Algae growth is high
B.Algae growth is low
C.Algae growth is moderate
Answer:
A. Algae growth is high
Explanation:
Substances that contains high concentration of nitrates, phosphates etc add nutrients to the water body. This is because organisms like ALGAE consider these compounds nutrients needed for their growth and development. The process whereby these nutrients becomes excessive in a water body is referred to as EUTROPHICATION.
Eutrophication of a water body i.e excessive nutrients like nitrates in a water body like the North Carolina waters being described in this question will lead to rapid and excessive growth of algal species. This increase in algal growth can cause the water body to be low in oxygen content and ultimately become inhabitable by living organisms.
what are the two kinds of electricity?
1.positive and negative
2.weak and strong
3.north and south
4. current and static
Answer:
4.Current and static electricity
Explanation:
What is the relationship between DNA and proteins?
Explanation:
At first sight, I could recognize you
As if we were calling for each other
The DNA in my blood vessels tell me
That it’s you I was looking all over for
¿Cuáles son las grasas e hidróxidos más efectivos en la elaboración de jabón?
Answer:
Las sales ideales para la saponificacion es la combinacion de grasas complejas con muchas cadenas de trigliceridos y de la soda caustia.
Explanation:
Un ejemplo de estos son la grasa vacuna o la aceite de cocina de consumo tradicional y la soda caustica que es el hidroxido de sodio.
Juntos estos dos productos forman el proceso de saponificacion.
If you help me quickly i will give you 100 point
Answer:
Ovary
Explanation:
The ovaries are organs that lie to the upper right and left of the uterus. They produce, store, and release eggs into the fallopian tubes in the process called ovulation
Please helppp
Which of the following trends is decreasing as you move from left to right across this portion of the Periodic Table?
Atomic number
Metallic character (becoming less metal like)
Number of atomic orbitals
Number of valence electrons
Answer:
Metallic character (becoming less metal like)
Explanation:
I took the test
number of atoms of phosphorus vapour in 100 gm
Answer:
is this question related to give reason?
how dose ice melt? how dose it form?
What is meant by the statement ' protential difference between point A and Point B in an electric circuit is 1 V' ?
Answer:
The potential difference is considered as the change in terms of voltage or Del V. It is measured in terms of voltage so that statement got the name voltage change between point A & B is 1. It means that I joule of work is carried out for moving the 1 coulomb of charge from the point A to B.
The items on the left side of the equation are called the ________________. Coefficient c. Reactants Subscript d. Products
Answer: Reactant
Explanation: Reactants are starting materials and are written on the left-hand side of the equation.
Answer:
reactants
Explanation:
need help with this.
please help, this is for an important grade i really need this..
Answer:
B.
You won't be able to see it cause the dark part of the moon is facing the Earth and isn't receiving any sunlight from the sun
How are plants connected to the atmosphere?
it’s actually environmental science own words please need it now
6. Geologists in Egypt and Ethiopia are comparing rock samples from rocks
found in the two countries. They are sharing information about the rocks to
figure out whether they are the same or different types of rock. The information
is as follows: Rock A formed from small pieces of rock. Rock B formed from liquid
rock in a different place. Rocks A and B formed at about the same time. Are
Rocks A and B the same or different types of rock? The rocks are
Answer:
Both are different.
Explanation:
Both rocks are different from one another because both formed from different types of rocks. Rock A was formed from small pieces of rock while on the other hand, Rock B was formed from liquid rock so they both have different sources of rocks from which they were formed. Forming at the same time does not show that they are similar to each other, it is their source which decides that they are similar or different.
(8.5a) Which of the following elements contains the greatest amount
of protons? *
A. Chlorine
B. Hydrogen
C. Oxygen
D. Sulfur
Answer:
A. Chlorine
Explanation:
Chlorine has 17, Hydrogen has 1, Oxygen has 8, Sulfur has 16.
The diagram of a water molecule above has the bond between the hydrogen and the
oxygen labeled. Why does the hydrogen atom and the oxygen atom bond?
A. atoms bond because there is just an attraction between atoms. There is nothing made of matter that holds them together
B. atoms Bond because they produce some thing that makes them stick together. The thing that holds them together is a substance made up of matter
C. atoms bond because the structure of an atom has a part that connects it to another atom that is made of matter
D. Atoms do not bond
Answer: A
Explanation: because of its positive and negative charges
how does newtons three laws effect bowling?
Answer:
The laws allow the ball to move
Explanation:
first law - an object in motion (the bowling ball) will go until the friction of the lane stops it
second law - f=m*a, the force in which you bowl, equals the mass of the ball, times the acceleration of the ball
third law - the action, is you bowling the ball and it rolling down the lane, the reaction is the friction slowing the ball down. Another action is the ball hitting the pins, the reaction is the pins falling.
I hope this helps.
please help i will mark brainliest which helps bring up youre rank
Answer:
push or pull
Explanation:
The rate of a reaction can be safely controlled for energy generation in suitable vessels. This applies to:
145.8g of Mg contains how many moles?
Is there a phobia for chemical reactions specifically?
Answer:
chemonoia
Explanation:
Many people have a strong fear of “chemicals” that belies the evidence. It's called chemonoia – and it may be damaging their health. If you were paranoid, you might think there really was something in the water that's damaged our sense of reason.
LIH2PO4 i dont know how to do this mabey you can help me figure it ou???
Is H2SO4 + NaOH > Na2SO + H2O balanced
Answer:
H2SO4 + 2NaOH ----> Na2SO4 + 2H2O
Explanation:
This is balanced equation
What is the chemical formula for iron(III) oxide
