Answer:
Monomers contain bonds between metals
Answer:
B: Monomers contain double bonds
Explanation:
I got it right on Edge
Help, and fast! I really need an answer to this.
Answer:
Explanation:says these bars are like co vid i get em right off teh bat
16. The half-life of carbon-14 is 5,730 years. What fraction of a 1gram
5 points
sample of carbon-14 would remain after 17,190 years? *
O 1/2
O 1/4
O 1/8
O 1/16
Answer:
i think it 1/2
Explanation:
HELLLLP ITS 8TH GRADE SCIENCE AND DUE TODAY
Answer:G
Explanation:
I would look it up on safari just to be sure tho, hope this helps
how many bonds can nitrogen have
Answer:
3
Explanation:
I think so, let me know if its wrong.
How much energy must be added to a 2-kg piece of wood with a specific heat
of 1760 J/(kg°C) to increase its temperature from 10°C to 50°C?
A. 140,800 J
B. 1,760,000 J
C. 211,200 J
D. 35,200 J
Answer:
A. 140,800 J
Explanation:
Specific heat of a material is defined as the amount of energy required to increase in 1°C 1kg of the material. For wood there are required 1760J perkg per °C.
The equation is:
Q = C*m*ΔT
Where Q is heat in Joules,
C is specific heat (1760J/kg°C),
m is mass (2kg)
ΔT is change in temperature (50°C - 10°C = 40°C)
Replacing:
Q = 1760J/kg°C*2kg*40°C
Q = 140800J
Right option is:
A. 140,800 J
Which of the following have the correct pairing of ion charge to the number of protons and electrons that would
deliver that charge for the ion written?
Select ALL that apply.
Select all that apply
А. 0-2: 8 protons and 4 electrons
B. Na+l: 11 protons and 10 electrons
С. N-3.7 protons and 10 electrons
D. Al 3. 13 protons and 16 electrons
Answer:
Explanation:
O-2 means that there are 2 more electrons than protons. This one is incorrect.
Na + 1 is correct. 11 protons and 10 electrons.
N-3 is correct 7 protons and 10 electrons.
AL+3 is incorrect. It goes the other way 13 protons 10 electrons.
What is Gallium Sulfide(Ga2S3).
Ionic or Covalent?
what is the biggest chemical formula
Answer:
IUPAC name for Titin
Explanation:
The IUPAC name for Titin. This is the largest known protein and so has the longest chemical name. Written in full, it contains 189,819 letters.
Simple conversions
You bought your pig and it weighed 82 pounds. By fair your goal weight is 267 pounds. Your pig will gain 1 pound for every 3 pounds of feed. How much feed will you need to get your pig to it's goal weight? (show your work) (5) Feed costs $21.37 per 50 pound bag. How much will your feed cost be, to get your pig to it's goal weight? (5) MUST SHOW ALL WORK.
Number of feed = 555 pounds
Feed cost = $237.21
Further explanationThe main composition of algebraic expressions are:
• 1. phrases/terms
• 2. variable
• 3. constants
• 4. arithmetic operations
• 5. coefficients
• 6. exponent
Initial weight = 82 pounds
Goal weight = 267 pounds
The difference in weight that must be achieved :
[tex]\tt 267-82=185~pounds[/tex]
The pig will gain 1 pound for every 3 pounds of feed⇒ 1 pound weight=3 pounds of feed
The amount of feed must be given:
[tex]\tt 185~pounds~weight\times 3~pounds~feed=555~pounds~of~feed[/tex]
Feed costs $21.37 per 50 pound bag, so for 555 pounds :
[tex]\tt (555~pounds\div 50)\times \$21.37=\$237.21[/tex]
Which of Earth's Spheres take up most of the Earth's surface?
Hydrosphere
atmosphere
cryosphere
geosphere
A solution was prepared by dissolving 35.0 g of NaCl in water to make a 0.5 L solution. What is the molarity of the solution? The molar mass of NaCl = 58.44 g/mol.
The molarity of the solution : 1.2 M
Further explanationMolarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
mass of NaCl=35 g
Volume of solution = 0.5 L
mol NaCl(MW=58.44 g/mol) :
[tex]\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{35}{58.44}\\\\mol=0.6[/tex]
The molarity :
[tex]\tt M=\dfrac{0.6}{0.5}=1.2[/tex]
When sodium reacts with water, what products are formed?
A copper rod connects two insulated beakers that contain liquids. The temperature of the liquid in Beaker A is 85°C and
the temperature in Beaker B is 15°C. Over the next 60 seconds, what will occur?
Explanation:
Over the next 60 seconds, the water in the beaker will try to attain thermal equilibrium by bringing the temperature in both beaker to the same level.
Heat generally moves over a gradient from a place of higher temperature to one with lower temperature. The copper rod is a metallic conductor. Heat will flow from the beaker at 85°C to the beaker at 15°CDuring the passage of time, the liquids in both beaker will reach thermal equilibrium and the temperature will be the same.I am in the 4th period, I have 10 electrons in my 3rd shell and only 2 electrons in my 4th shell. What am I?
if during the interaction of 36.5 g of hydrochloric acid with magnesium 137 kg of joules energy are released, how much energy would be released if 96 g of magnesium acted
Explanation:
ANSWER
The molarity =
molecularweight
density×purity×10
=
36.5
1.18×36.5×10
=11.8molar
A toy car is pushed 10 meters in 5 seconds. What is the speed of the toy car in meters per second?
A. 5 meters per second
B. 10 meters per second
C. 2 meters per second
D. 0.5 meters per second
________ is defined as average kinetic energy.
A. temperature
B. volume
C. heat
D. pressure
Calculate the number of milliliters of 0.440 M KOH required to precipitate all of the Fe2+ ions in 187 mL of 0.692 M FeSO4 solution as Fe(OH)2. The equation for the reaction is: FeSO4(aq) + 2KOH(aq) Fe(OH)2(s) + K2SO4(aq)
Answer:
588.2 mL
Explanation:
FeSO₄(aq) + 2KOH(aq) → Fe(OH)₂(s) + K₂SO₄(aq)First we calculate how many Fe⁺² moles reacted, using the given concentration and volume of FeSO₄ solution (the number of FeSO₄ moles is equal to the number of Fe⁺² moles):
moles = molarity * volume187 mL * 0.692 M = 129.404 mmol Fe⁺²Then we convert Fe⁺² moles to KOH moles, using the stoichiometric ratios:
129.404 mmol Fe⁺² * [tex]\frac{2mmolKOH}{1mmolFeSO_4}[/tex] = 258.808 mmol KOHFinally we calculate the required volume of KOH solution, using the given concentration and the calculated moles:
volume = moles / molarity258.808 mmol KOH / 0.440 M = 588.2 mLthis graphs represents
40 points!
Describe One Front It Forms with Another Air Mass
Continental Polar:
Continental Tropical:
Maritime Polar:
Maritime Tropical:
Answer:
cold front, cold front, warm front, cold front, warm front, also low, low, high, low, high air presure
Explanation:
What chemicals can I mix together that will cause a huge explosion that is safe for school? It can't be a vinegar and baking soda explosion because I already have it. Please help!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Adding baking soda to vinegar, the reaction is delayed, but then fizzes the same amount. More vinegar is better.
Explanation:
Calculate the number of moles in 35.7 g of CH4
Answer:
[tex]\boxed {\boxed {\sf About \ 2.23 \ moles \ CH_4}}[/tex]
Explanation:
First, find the molar mass of CH₄
This compound is made of carbon (C) and hydrogen (H). Look on the Peirodic Table for the masses of both elements.
Carbon: 12.011 g/molHydrogen: 1.008 g/molNow, count the number of moles in the compound. There is no subscript on C, indicating 1 mole. There is a subscript of 4 on H, indicating 4 moles. We must multiply the molar mass of hydrogen by 4.
1 Carbon: 12.011 g/mol 4 Hydrogen: (4 * 1.008 g/mol)= 4.032 g/molAdd the 2 masses.
12.011 g/mol + 4.032 g/mol = 16.043 g/molNext, find the number of moles in 35.7 grams.
Use the molar mass of CH₄ as a ratio.
[tex]\frac{16.043 \ g \ CH_4}{1 \ mol \ CH_4}[/tex]
Since we want the units of grams CH₄ to cancel when we multiply, we must flip the ratio.
[tex]\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}[/tex]
Multiply by 35.7 grams.
[tex]35.7 \ g \ CH_4 *\frac{1 \ mol \ CH_4}{16.043 \ g \ CH_4}[/tex]
The grams of CH₄ will cancel each other out. Since there is a 1 in the numerator, we can also move 35.7 to the numerator.
[tex]35.7 *\frac{1 \ mol \ CH_4}{16.043 }[/tex]
[tex]\frac{35.7 \ mol \ CH_4}{16.043}[/tex]
[tex]2.22526959 \ mol \ CH_4[/tex]
The original measurement given, 35.7 grams, has 3 significant figures (3, 5, and 7), so we must round to 3 sig figs.
For this number, it is the hundredth place.
The 5 in the thousandth place tells us to round the 2 to a 3.
[tex]2.23 \ mol \ CH_4[/tex]
There are about 2.23 moles of CH₄ in 35.7 grams.
The statue of Liberty is made out of copper metal. When it was first constructed, the color of the copper metal was bright burnt orange.
Over time, however, it slowly developed a green color as it was exposed to air. What happened to the statue of liberty?
Explanation:
The green color of the Statue of Liberty was due to the outer surface covered with hundreds of thin copper sheets. Copper reacts with the air to form a patina or verdigis
Please Help ASAP Students set up a controlled experimernt. They put five
crickets in each of three identical containers. They set one
container to 15C, one to 20°C, and one to 25°C. Then they
count the number of cricket chirps in each container during
1 hour. What are the two constants in this experiment? You have to pick to answers.
A: The number of crickets in each container.
B: The temperature of each container.
C: The number of cricket chirps.
D: The kind of containers used.
Answer: A
Explanation:in learned this last year:)
A: The number of crickets in each container. and
C: The number of cricket chirps.
are possibly the right answers
What state has the highest average speed limit on rural freeways
Answer:Alaska
Explanation:
what should we use in soap making process:-
a) potassium hydroxide
b) sodium hydroxide (lye)
Explain why it should be used
Sodium hydroxide, with the formula NaOH, is usually used in products as a pH adjuster. It's also used in soap-making to turn fats and oils into soap. You can find sodium hydroxide (also called caustic soda or lye) in its pure form in the cleaning aisle, since it's also really handy for clearing up clogged drains.
34
1 point
The iodate ion is given by the formula 103 1. Which is the correct formula for the periodate ion?
-2
103
1
103
N
10
104
3
Previous
4
5
6
Answer:
Got morning the iodate for the
Products do what? what do products do in science
Answer:
In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants interact with each other.
Explanation:
If 150 g of sucrose dissolved in a 1.50 L water what is the molarity of a solution
Answer:
0.2923 molar
Explanation:
M = given mass /(molar mass× volume)
150/342(1.5)
150/513
0.2923M
The atomic notation for a particular atom of boron is 11/5 B. The atomic number is while the mass number is_, while the mass number is_.
The atomic number=5
The mass number=11
Further explanationIn the following element notation,
[tex]\tt \large {{{A} \atop {Z}} \right X}[/tex]
X = symbol of elemental atom
A = mass number
= number of protons + number of neutrons
Z = atomic number
= number of protons = number of electrons, on neutral elements
So for The atomic notation for a particular atom of Boron :
₅B¹¹
Z=5=atomic number
A=11=mass number
