Answers
[tex]\\ \rm\longmapsto 27.3g[/tex]
[tex]\\ \rm\longmapsto 27.3(1000)[/tex]
[tex]\\ \rm\longmapsto 273(100)[/tex]
[tex]\\ \rm\longmapsto 273100mg[/tex]
Related Questions
state two factors that determine the stability of isotope
Answers
How would you change the type of atom
Answers
Answer:
Hi, There! :)
If you change the number of protons an atom has, you change the type of element it is. If you change the number of neutrons an atom has, you make an isotope of that element.
Answer:
If you change the number of protons an atom has, you change the type of element it is. If you change the number of neutrons an atom has, you make an isotope of that element. All known elements are arranged on a chart called the Periodic Table of Elements.
Explanation:
that's what I found buddy
The number 199,078 has how many significant digits?
Answers
I think it's 6
Explanation:
zeros between other nonzero digits are significant
ex. 50.3 has 3 significant figures. ex. 8101.01 has 6 significant figures
If I initally have a gas at a pressure of 12 atm, a volume of 23 L, and a temperature of 200 K, and then I raise the pressure to 14 atm and increase the temperature to 300 K, what is the new volume of the gas?
Answers
Answer: 30 L
Explanation: Use the combined gas law: P1V1/T1 = P2V2/T2
We want V2, so rearrange:
V2 = V1(T2/T1)(P1/P2)
Note how I've grouped the temperature and pressure into ratios. This allows us to cancle those units quickly and gives a perspective on what we should expect. Enter the data:
V2 = (23L)*(0.6667)*(0.8571)
V2 = 29.6 L 30 L for 2 sig figs
Calculate the density of sulfuric acid if 50. mL of the acid weighs (mass) 144. g.
a
b. 3.6 g/mL
b
d. 1.8 g/mL
c
a. 4.8 g/mL
d
b. 2.0 g/mL
Answers
Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
mass = 144 g
volume = 50 ml
We have
[tex]density = \frac{144}{50} \\ = 2.88[/tex]
We have the final answer as
2.88 g/mLHope this helps you
A square chunk of plastic has a length of 5 cm, width of 5 cm and height of 5 cm. It has a mass of 200 g. What is it’s density
Answers
Answer:
1.6g/mL
Explanation:
Density equation is D=m/v
Density = g/mL
m=mass of sample in grams
v = volume of sample in mL
The volume of a square can be calculated by V=l*w*h.
In this case it is 5cm*5cm*5cm = 125cm^3
Since we know that 1cm^3 ~ 1mL we can convert the volume to mL as so:
125cm^3 (1mL/(1cm^3)) = 125mL
Then simply plug into the density equation:
D=200g/125mL = 1.6g/mL
what are lower and higher energy levels.
Answers
Answer:
If an atom, ion, or molecule is at the lowest possible energy level, it and its electrons are said to be in the ground state. If it is at a higher energy level, it is said to be excited, or any electrons that have higher energy than the ground state are excited
Explanation:
pls mark brainliest
What effect does fermented sugar have in beer brewing
Answers
Answer:
If the sugar concentration level of the must becomes too high at any given point--either at the beginning or during the fermentation--it starts to have an inhibiting effect on the yeast's ability to produce alcohol. In other words, the higher sugar concentration starts to act as a preservative effecting the fermentation in a negative way.
Explanation:
Fermentation is the process by which yeast converts the glucose in the wort to ethyl alcohol and carbon dioxide gas -- giving the beer both its alcohol content and its carbonation.
c. Mention the function of corolla.
Answers
Answer:
Overall, the main function of the corolla is to assist in the reproductive process of the plant. The petals of the corolla are designed to aid in pollination, and therefore, increase the chance of successful reproduction of the flower.
to assist in the reproductive process of the plant...
Multiple Choice Questions 1. Which of the following statement best describes an atom? A. Protons and electrons are grouped together in a random pattern. B. Protons and electrons are grouped together in an alternating pattern C. A core of protons and neutrons surrounded by electrons. D. A core of electrons and neutrons surrounded by protons. 2. Table 5.10 shows the atomic mass of four stable isotopes of an element X. 119
Answers
Answer:
C is Correct
Explanation:
Protons and Neutrons make up the Nucleus while Electrons surround the nucleus in circular orbits with continuous rotation.
How did the development of the earliest idea about atoms differ from the later work of scientists?
A.It was based on sound evidence.
B.There were explanations for the idea.
C.It was based on the thoughts of an early philosopher.
D.There were experiments conducted to support the idea.
Answers
Answer:
C
Explanation:
The early ideas of the atom states that the indivisible object is hollow or is a solid object with nothing inside. The later discoveries or works of the scientists states that inside the atoms are the subatomic particles which are the electrons, protons, and neutrons.
Both protons and neutrons are located inside the nucleus of an atom. Changing the number of neutrons in the nucleus would form different isotopes of the same element. Which of these Best describes the outcome of decreasing the number in the nucleus?
Answers
Answer:
The number of protons in an element is the same thing as the element's atomic number. Which means that bringing any change to the number of protons in an element by decreasing it would change the element as well as the number in the nucleus completely.
How many atoms of each elements are in three molecules
Answers
Answer:
Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom.
Explanation:
The charge of most poly atomic ions is _____
Answers
Explanation:
They mostly have negative charges
Chemical changes can change which properties of a substance?
Group of answer choices
Reactivity
Color
Malleability
All of the above
Answers
Answer:
» Reactivity and color
Explanation:
though color is very minor answer because it also relates to a physical property.
[tex].[/tex]
A pan containing 20.0 grams of water was allowed to cool from a temperature of 95.0 °C. If the amount of heat released is 1,200 joules, what is the approximate final temperature of the water?
75 °C
78 °C
81 °C
87 °C
Answers
Answer:
81 °C
Explanation:
This is a calorimetry question so a few things you will need for this. The calorimetry equation q=mcΔT & the specific heat of water (4.2J/g•°C). Other definitions are:
q = heat added/released by a sample
m = mass of sample
c=specific heat of sample
ΔT = change in temperature
from here we can rearrange the equation to state:
q/(mc) = ΔT
1200J/((20.0g)(4.2J/g•°C)) = ΔT
14°C = ΔT
If the starting temperature was 95.0°C and we know that the temperature was cooled by 14°C then the final temperature of the water would be 81.
Answer:
C. 81 c
Explanation:
took the test :)
I need Help can someone help
Answers
Answer:
no bueno
Explanation:
measure 25 mL of water in a 50 mL graduated cylinder. pour the 25 mL of water into the 250 mL beaker and record the mass of the beaker + water. Now find the mass of just the water.
Answers
Answer:
so i think mass of water is 235 ml
If acid spills on your shoulder, you should use the
Answers
Answer:
laboratory/safety shower.
Otherwise, immediately wash with water and tell your teacher or instructor.
ok guys! so! im in my first chemistry class and i dont understand what an ion is!! help please! i need a simple breakdown of how to understand chemistry
Answers
Explanation:
Review and Study Material Before Going to Class. ...
Take Good Notes. ...
Practice Daily. ...
Take Advantage of Lab Time. ...
Use Flashcards. ...
Use Study Groups. ...
Break Large Tasks Into Smaller Ones.
reading a variety of chemistry books
Answer:
An ion is an atom or molecule that carries an electric charge.
Ions are identified by the use of a superscript to show the sign and size of their electric charge.
Negatively charged ions are called anions, and positively charged ions are called cations.
Explanation:
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
Three blocks are shown. Which statement is correct?
Block A has the greatest density.
Block B has the greatest density.
The density of Block A is equal to the density of Block B.
The density of Block B is equal to the density of Block C.
Answers
Answer:
Block B i thinkExplanation:
i think its b
3.
Alum is used in water treatment as
A. a germicide.
В. a decolourising agent.
C. an antioxidant.
D. a coagulating agent.
Answers
Answer: Alum is used in water treatment as a germicide
Explanation:
A. a germicide
Apakah perbezaan kakilauan permukaan rod kuprum dan karbon
Answers
Answer:
soalan ni yang ni tahun atau tingkatan
Vapor pressure of any liquid _______. A. increases with increases in temperature B. increases with decreases in temperature C. is not affected by changes in temperature D. increases with increases in volume of the liquid E. None of the Above
Answers
Answer:
increase with increases in temperature
Explanation:
please mark me brainleast
i got the total but can’t get these ???
Answers
Answer:
Volume of heptane in cylinder = 51.2mL
Volume of water = 33mL
Explanation:
Density(g/mL) = mass/ Volume
》Volume = mass/ Density
Please prompt me if I'm wrong in my workings. Hope this helped.
Describe hydrogen's atomic structure and its molecular structure.
Answers
Explanation:
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral atom contains a single positively charged proton and a single negatively charged electron bound to the nucleus by the Coulomb force. Atomic hydrogen constitutes about 75% of the baryonic mass of the universe.
Names: hydrogen atom, H-1, protium, ¹H
Protons: 1
Neutrons: 0
Symbol: 1H
Answer:
The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus.
Explanation:
If gasoline costs $3.13 per gallon, how many gallons of gasoline could you purchase for $21.00 ?
Round your answer to the nearest hundredth place.
____________ gallons
Answers
Answer:
7 gallons
Explanation:
Just do the math
$21 x 1 gallon/$3 =7 gallon
10.74cm^3 to liters
Please show a step by step process on how to solve.
Answers
Answer:
I HOPE IT WILL HELP YOU A LOT.
11:48 Tue 24 Aug
47%
3. Graphite, aform of carbon, conducts electricity because it has:
(1 Point)
Answers
Answer:
carbon because it is the main answer of these
hi <3
graphite is able to conduct electricity because it has delocalised electrons.
explanation:
carbon can bond 4 times, but in graphite it is only bonding to three other carbons, leaving one electron free to carry charge
hope this helps <33
Give one example of neutral oxides which turns colourless liquid at room temperature
Answers
Answer:
mercury
Explanation:
because mercury can get turned into liquid in any normal rrom temperature