Answer:
Assume that the coffee has the same density, 0.997 g/mL ... One liter of water has a mass of 1 kg and a specific heat of 4.184 J/(g °C).
Explanation:
Which professional most likely uses X-ray technology?
a food critic
a dentist
a financial analyst
a pharmacist
Answer:
a dentist
Explanation:
How many grams of calcium nitrate, Ca(NO3)2 (molecular weight 164), contains 24 grams of oxygen atoms?
a
41 g
b
96 g
c
62 g
d
164 g
true or false If beavers built a dam one stream, the kinds of plants and animals that lived around the stream would not be affected.
How subduction cause the formation of land mass like mountains and
volcano?
Answer:
Tectonic plates can crash into each other, and soil and dirt will shoot up, creating mountains and volcanos. This is how the Himalayas are actually said to form, when India crashed into Eurasia.
Hope this helps!
6.(a) State any two ways by which water gets polluted.
(b) Name the components present in water gas.
As the atomic number on the Periodic Table increases, the number of electrons A. is unchanged B. alternates C. decreases D. increases
Answer:
D.
Explanation:
I looked it up and said increases, i'm taking a test today in chemistry and had the same question lol.
what is the location of chlorine
Answer:
Chlorine can be found in abundance in both the Earth's crust and in ocean water. In the ocean, chlorine is found as part of the compound sodium chloride (NaCl), (table salt). In the Earth's crust, the most common minerals containing chlorine include halite (NaCl), carnallite, and sylvite (KCl).
Chlorine can be found in abundance in both the Earth's crust and in ocean water
Which is MOST likely to be considered “newsworthy”?
a study on which foods contain the most antioxidants, done five years ago
a study on which foods contain the most antioxidants, done two years ago
a study on which foods contain the most antioxidants, done last year
a study on which foods contain the most antioxidants, done last month
Metalliods have _______ proporties of metals and non metals.
a
both
b
neither
c
different
Answer:
A both
Explanation:
hope this helped
MORE HELP ILL GIVE BRAINLY if correct
In two or more complete sentences explain how to balance the chemical equation,
Ca + N2 ⟶ Ca3 + N2 and include all steps.
Answer:
ca +n2 is impossible to get trough a ca3 +n2 so you have to try to find a reasnable question like ca+n2 = ca3n2 then you need witch is the same but the chimacl blanice is off so when mixing the chimcals try to reduce the can2
but also try to make it be a better salution
Explanation:
hope that helps also good luck
Rocks that originated from the liquid phase are classified as
rocks.
Answer:
igneous rocks
Explanation:
igneus rocks are sometimes considered primary rocks because they crystallize from a liquid
A container of carbon dioxide has a volume of 240 mL at a temperature of 22°C. If the pressure remains constant, what is the volume at 44°C?
Answer:
Volume of the [tex]CO_{2}[/tex] gas at 44°C is 258 ml.
Explanation
here,
using Charles' law ,
[tex]\frac{V}{T} =\frac{v}{t}[/tex]
where , V= initial volume v= final volume
T=initial temperature t = final temperature
Given - pressure is constant ,
so , putting the values -
V= 240ml
T= 22 + 273K = 295K (since converting celsius into kelvin that
is +273K )
v =?
t = 44+ 273K = 317K
Now , putting the given values in charles' law ,
[tex]\frac{240ml}{295K} =\frac{v}{317K}[/tex]
240ml x317K = v x 295K (through cross multiplication )
v =[tex]\frac{240ml\times317K}{295K}[/tex]
= 258ml .
thus , the volume of carbon dioxide in a container at 44°C IS 258ml .
Which of the following is a unit of density? = Mass / volume
A: liters per cubic gram
B:cubic meters
C:grams per cubic centimeter
D:square meters
Answer:
The correct answer is C.
Explanation:
To solve this problem, we should first recall possible units for mass and volume. Mass can be represented with units of grams, kilograms, etc. Volume has units of cubic meters, cubic centimeters, etc.
Therefore, since we know that density is mass divided by volume, the only answer that makes sense here is C. grams per cubic centimeter (where per signifies that grams are being divided by cubic centimeters).
Hope this helps!
how many neutrons would 34 16 S-2 have? A. 16 B. 18 C. 20 D. 32
Answer:
Explanation:
For
32
S
2
−
, there are 16 protons, 18 electrons, and 16 neutrons.
Explanation:
The atomic number,
Z
, specifies the number of protons, positively charged, massive, fundamental particles present in the sulfur nucleus. This number defines the sulfur atom as a sulfur atom (i.e if there were 17 protons, the atom would be chlorine).
For a neutral atom, if there are 16 positive nuclear charges, there must necessarily be 16 negatively charged particles, 16 electrons, whizzing about the nucleus.
Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus.
And thus finally, if we have the
32
S
2
−
ion, there are 18 electrons, 16 protons, and 16 neutrons.
An atom can be defined by its properties:
Atomic number (Z): It is equal to the number of protons present in a neutral atom.Mass number (A): It is equal to the sum of the number of protons and the number of neutrons.An isotope is represented by the general notation of [tex]_Z^A\textrm{X}[/tex], where X is the symbol of an element.
For the given isotopic specie, [tex]_{16}^{34}\textrm{S}^{-2}[/tex], mass number is 34 and atomic number is 16.
Number of neutrons = Mass number - Atomic number
Put the value in the above formula.
[tex]\Rightarrow \text{Number of neutrons}=34-16\\\\\Rightarrow \text{Number of neutrons}=18[/tex]
So, the correct option is (G).
Learn more about neutrons in an atom here: https://brainly.com/question/19958244
Name:
1.
Which formula represents an ionic compound?
A. NaCI
B. N20
C. HCI
D. H2O
Answer:A
Explanation: because it represents a salt which is a nonmetal
When vinegar, an acid, is mixed with baking soda, a base, the reaction is similar to the reaction of Alka-Seltzer and water; a salt, water and carbon dioxide are produced. In two or more complete sentences, describe how your knowledge of balancing chemical equations can help you to determine the missing compound. Write your answer in the essay box below. NaHCO3 + HC2H3O2 ⟶ ________ + H2O + CO2
Answer:
no.
Explanation:
you're prolly wondering why cuz this is revenge for your little game you did to me and whoops! i don't know the answer :) !
evaporation
the process in which a solid changes directly into a gas (the term is
sometimes also used for the reverse process)*
CO
1
Chapter 3 Section 2
Which is not a chemical element needed to build sugars?
Answer:
Nitrogen
Explanation:
Which has a greater energy, a photon of yellow light, or a photon of green light
Answer:
A photon of green light has a higher energy since it has a higher frequency than the yellow photon. And we can see that on the picture representation of the light spectre.
why ie of nobel gases are very high
Answer:
noble gases are very high because they have the maxium amount of electrons in their outer shell
Explanation:
what is the difference between electron dot structure and lewis structures
Answer:
I hope this helps
Explanation:
Lewis symbols, which are also known as Lewis dot diagrams or electron dot diagrams, are diagrams that represent the valence electrons of an atom. Lewis structures, also known as Lewis dot structures or electron dot structures, are diagrams that represent the valence electrons of atoms within a molecule.
Which is a better substitute for water, Li2O or H2S?
Answer:
h2s
Explanation:
The closest chemical analogue for water is hydrogen sulphide or H₂S. Because, both oxygen and sulfur are same group elements and shows similar properties.
What is H₂S?Hydrogen sulphide or H₂S is a covalent compound formed by the combination of two hydrogens and one sulphur atoms. In this compound, each hydrogen shares one electron to sulfur and sulfur shares its two valence electrons to each hydrogen.
Water is H₂O, which is formed by the strong hydrogen bonding between hydrogen and oxygen and it exists as liquid mostly. Most of the compounds can be dissolved in water.
Lithium oxide Li₂O is a covalent compound with partial ionic character and it does not exhibit any similarity with water in any case.
Bothe sulfur and oxygen are in 16th group. They are gases with high electronegativity. Hence, both H₂O, H₂S are polar compounds. Both sulfur and oxygen have affinity towards hydrogen. Both have similar shape and bond angle.
Moreover, H₂S can dissolve some minerals and acts as a good solvent like water.
Hence, the better substitute for water is H₂S.
To find more about H₂S, refer the link :
https://brainly.com/question/20365774
#SPJ2
Explain the similarities and differences between combination, decomposition,
and replacement reactions.
HELP PLEASE POINTS++++++++++++++ IMA MAKE BRAINLIEST
Question 2 of 10
What charge does an ion have if it has more protons than electrons?
O A. Neutral, since protons are inside the nucleus
B. A net positive charge
C. A net negative charge
O D. No charge
SUBMIT
Answer:
B. A net positive charge
Explanation:
a p e x 2021!
____is the terrestrial planet that has almost no atmosphere
Answer:
Should be Mercury.
Explanation:
The atmospheres of the terrestrial planets range from thin to thick. Mercury has almost no atmosphere.
Barium phosphide Ba3P2 BaP Ba3PO4
Answer:
It A(Ba3P2)
Explanation:
I took the test
Answer:
It A(Ba3P2)
Explanation:
which chemical species can easily for an ionic bond with a cation?
A. Sr
B. Ne
C. NH4+
D. PO4³-
Answer:Option D
Explanation:i took the test
What is the mass of a dolphin swimming at 16 m/s with a momentum of 800 kg m/s?
Answer: 50 kg
Explanation: formula is
m= p/v
m=800 kg m/s : 16m/s
m= 50kg
idk tho hope this helps
What are the three main technical support options for Microsoft users? Find It Myself, Ask the Community, Get Live Help Communities, Find It Myself, Guide Me Fix a Problem, Find It Myself, Communities Ask the Community, Get Live Help, Fix a Problem
Answer:
Find It Myself, Ask the Community, Get Live Help
Explanation:
The three main options for Microsoft users are Find It Myself, Ask the Community, Get Live Help. The first of which is finding it yourself through the search menu or help guidelines provided by Microsoft in all of their operating systems. Secondly, would be asking the community through search engines such as Google or through Microsoft help forums. Lastly, would be getting live help since Microsoft opertaing systems have a remote desktop feature that allows you to connect to another IT professional from a distance, or you can simply contact an IT professional to visit you in person for technical assistance.
True or False: Clouds form when one condensation nucleus expands outward.
Answer:
False
Explanation:
Clouds are formed when air contains as much water vapor (gas) as it can hold. This is called the saturation point, and it can be reached in two ways. First, moisture accumulates until it reaches the maximum amount the volume of air can hold. The other method reduces the temperature of the moisture filled air, which in turn lowers the amount of moisture it can contain. Saturation, therefore, is reached through evaporation and condensation, respectively. When saturation occurs, moisture becomes visible water droplets in the form of fog and clouds.