why is the solubility of a neutral organic compound unaltered by exposure to aqueous acid or base?
The greeks believed that fire was a state of matter. how did atomists describe fire?
Answer: atomists before Leucippus and Democritus described fire as being one of the four origins of matter, but Democritus and Leucippus described fire as being just likeeverything else and being composed of atoms.
Explanation:
a glass marble has a mass of 18.5 g and a volume of 6.45 cm^3
The density of the glass marble is 2.87 [tex]g/cm^3[/tex].
Given the following data:
Mass of glass marble = 18.5 gramsVolume of glass marble = 6.45 [tex]cm^3[/tex]In this exercise, you're required to determine the density of the glass marble.
Density can be defined as mass per unit volume of an object.
Mathematically, the density of an object is given by the formula;
[tex]Density = \frac{Mass}{Volume}[/tex]
Substituting the given parameters into the formula, we have;
[tex]Density = \frac{18.5}{6.45}[/tex]
Density = 2.87 [tex]g/cm^3[/tex]
Therefore, the density of the glass marble is 2.87 [tex]g/cm^3[/tex].
Read more: https://brainly.com/question/18320053
When you blow dry your hair is it physical or chemical change
If the weight of displaced liquid and the weight of an object are the same, the object will
Answer:
float, but be submerged
Explanation:
science question down below
science question down below hurry
A 0.5376 g sample of an unknown compound is found to contain 0.3044 g of carbonate. Could this compound be calcium carbonate?
Blank water is a term used to describe water that is safe to drink
What is a common characteristic of the transitions elements?
Which electrons participate in chemical bonding?
a. core electrons
b. valence electrons
c. the innermost electrons
d. any electrons
Answer:
B
Explanation:
I took the test
identify two mass balance equations for NaOCl
a. [Na+]
b. [OCl-]
c. [Na+] + [OCl-]
d. [OCl-] + [HOCl]
e. [Na+] + [HOCl]
Upon review of the provided chemical equations, each one is found to be balanced, with an equal number of each type of atom on both sides of the equation.
When determining if each chemical equation is balanced, we can confirm the balance by ensuring that the same number of each type of atom appears on both sides of the arrow. Here are the equations examined for balance:
a. 2Na(s) + O₂(g)How many moles of carbon are in 2 moles of caffeine
In this forest, trees block much of the sunlight from reaching the ground. The branches of trees grow up and out to reach as much sunlight as they can. Which challenge of life does this example represent?
PLEASE ANSWER ASAP! DOUBLE CHECK THE ANSWER!
Which of the following best describes the forces when there are different-sized forces from opposite directions acting on an object?
Positive
Negative
Unbalanced
Gravitational
pls help will give crown to best answer
What is the STM in science
STM in science stands for Scanning Tunneling Microscope, a device that allows visualization of atomic-level details on surfaces, revealing individual atoms and contributing to nanotechnology research.
Explanation:In science, STM refers to a Scanning Tunneling Microscope, an instrument for imaging surfaces at the atomic level. An STM uses a sharp tip that scans a surface at a constant potential. As the tip moves close to surface atoms, electrons tunnel from the surface to the tip, creating a current that varies based on the distance between the tip and the surface. This tunneling-electron current is monitored and used to construct an image of the specimen with atomic-scale resolution. With an STM, scientists can literally see individual atoms, such as those on a sheet of gold, and structures like carbon nanotubes, providing profound insights into the physical world at the nanoscale.
in a chemical reaction 48.6 grams of magnesium reacts with 32.0 grams of oxygen to form magnesium oxide how many grams of magnesium oxide would be produced from this reaction
A) 82.6 grams
B) 80.6 grams
C) 16.6 grams
D) 18.6 grams
Anhydrous calcium chloride removes water vapor from the air inside a container having an air-tight seal called a desiccator. Explain
What is the volume of 220 grams of an object with a density 55g/cm3
The volume of 220 grams of an object having density of 55 g/cm³ is 4 cm³.
What is the relation between Mass and Volume ?
Mass and volume of a body are related as follows -
M = D x V
D - density of element
M - mass of element
V - volume of element
Given is an object that has mass of 220 grams and density of 55 g/cm³.
Mass and volume are related as -
M = D x V
Rewrite the relation as follows -
V = M / D
Mass of metal object [M] = 220 g
Density [D] = 55 g/cm³
Substitute the values -
V = 220/55
V = 4 cm³
Therefore, the volume of 220 grams of an object having density of 55 g/cm³ is 4 cm³
To solve more questions on Mass - Density relation, visit the link below-
brainly.com/question/28348989
#SPJ5
which of the following questions is most testable through a scientific experimentation
A. which gelatin takes longer to set: gelatin with a fruit or gelatin without fruit
B. which fruit looks more attractive in gelatin: bananas or apples ?
C. which taste better: gelatin with fruit or gelatin without fruit?
D. which fruit do more people buy in one year: bananas or apples ?
What are some catchy projects titles for the question, "What liquids cause the most tooth decay?"
When determining an element's identity, what is the most important subatomic part to examine?
A) electrons
B) neutrons
C) valence electrons
D) protons
Name and DESCRIBE the four forces that are at work within the nucleus of an atom
Describe the energy transformation that occurs in a digital clock?
Answer:
electrical to mechanical
Explanation:
What is the Complete Ionic Equation?
In the chemical reaction below, calcium (Ca) and water (H2O) react to form calcium hydroxide (Ca(OH)2) and hydrogen gas (H2).
Ca (s) + 2H2O (l) → Ca(OH)2 (aq) + H2 (g)
Calcium and water are the reactants in this chemical reaction, whereas calcium hydroxide and hydrogen gas are the products that are formed. Once the reaction reaches completion,
Finish The Sentence...
A.
the products of the reaction will have changed back into the reactants.
B.
the total mass of the products will be greater than the original mass of the reactants.
C.
the total mass of the products will be equal to the original mass of the reactants.
D.
the total mass of the products will be less than the original mass of the reactants.
why do you think different liquids have different freezing points
How many carbon atoms are in four molecules of glucose, or 4C6 H12 O6?
please help
balance this equation
Cu(NO3)2➡️CuO+NO2+O2
Final answer:
The balanced chemical equation for the decomposition of copper(II) nitrate into copper(II) oxide, nitrogen dioxide, and oxygen is 2 Cu(NO3)2 ➔ 2 CuO + 4 NO2 + O2. This illustrates the conservation of mass by ensuring equal numbers of each type of atom on both sides of the equation.
Explanation:
The question you've asked pertains to balancing the chemical equation Cu(NO3)2 ➔ CuO + NO2 + O2. This process involves ensuring that the number of atoms for each element is the same on both sides of the equation.
To balance this equation, we start with the given substances and adjust the coefficients (the numbers in front of the chemical formulas) to make sure the atoms are balanced. After several steps of balancing, we arrive at the balanced equation:
2 Cu(NO3)2 ➔ 2 CuO + 4 NO2 + O2
This equation indicates that 2 moles of copper(II) nitrate decompose to form 2 moles of copper(II) oxide, 4 moles of nitrogen dioxide, and 1 mole of oxygen gas. The balancing process takes into account the conservation of mass, which states that atoms are neither created nor destroyed in a chemical reaction.