Answer: with dog figs- it is 590
With decimals it is 589.68
Explanation:
The specific branch of chemistry that focuses on molecules such as salts and water that constitute non-living matter, but are still important to living things, is termed
Answer: Inorganic chemistry
Explanation:
Inorganic chemistry can be defined as the branch of chemistry which studies the behavior of the inorganic compounds. Inorganic compounds are those compounds which lack carbon hydrogen bonding. The carbon monoxide, carbon dioxide, sodium chloride and water are the examples of inorganic compounds. This branch also studies the effect of these chemical compounds on the living things. The water and salts are chemicals which regulate the chemical and physiological reactions in the body.
PLEASEEEE HELPPP ME WITH THISS
A person riding in the passenger seat of a car is "pushed" into the car door as the car makes a sharp left turn.
Newton's 2nd Law
Newton's 1st Law
Newtons 3rd Law
Answer:
second law
Explanation:
Please help me answer this question but in your own words!!!!
Answer:
when sodium reacts with chlorine atoms, sodium will give an electron which is negative charged to chlorine.it makes sodium(+) and chlorine (-)..then sodium will attract chlorine to form sodium chloride(NaCl)
What is one effect of the Gulf Stream
Answer:
This strong current of warm water influences the climate of the east coast of Florida, keeping temperatures there warmer in the winter and cooler in the summer than the other southeastern states. Since the Gulf Stream also extends toward Europe, it warms western European countries as well.
Answer:
warm climates in northern Europe
Explanation:
I took the test in K12 and this was the answer :)
If the heat of combustion for a specific compound is −1160.0 kJ/mol and its molar mass is 86.47 g/mol, how many grams of this compound must you burn to release 541.20 kJ of heat?
Answer:
40.34 g
Explanation:
First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:
541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol
So, we have to burn approximately 0.47 mol of the compound. We convert the moles to mass in grams by using the molar mass:
mass = molar mass x moles = 86.47 g/mol x 0.4665 mol = 40.34 g
Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.
What function does this cytoplasm perform in a plant and animal cells
Answer:
It helps shape, while holding and keeping organelles in their place.
Explanation:
Answer:
it holds the cell organelles
Explanation:
You are welcome
How many molecules are in 2.0 moles of oxygen gas
Answer:
6.02 X 1023 molecules
Explanation:
Which type of reaction is always spontaneous?
A. an exothermic reaction that has an increase in disorder
B. an exothermic reaction that has a decrease in disorder
C. an endothermic reaction that has an increase in disorder
D. an endothermic reaction that has a decrease in disorder
Answer:
A.) an exothermic reaction that has an increase in disorder.
Explanation:
got it correct (unit review test)
Help me asap pls man
Answer:
C
Explanation:
A p orbital has the approximate shape of a pair of lobes on opposite sides of the nucleus.
Explanation:
A p orbital would have a du-bbell shape.
Options A and B show a spherical shape, which are for s orbitals.
Option D shows a double du-bbell / clover leaf shape, which is for d orbitals.
The answer is Option C.
P.S. The word is censored apparently, so be forgiving! Thanks~
16. Put the following pairs in order from least polar to most polar:
a. C-H N-H H-O H-F
b. C-H
C-S
H-F
C-N
C-O
H-Br
i.
Which pair in part b has the most electronegative bond? Least electronegative bond?
17. Explain how you could use the electronegativity scale to determine the direction and degree of
polarity between two atoms. (Direction meaning which way does the dipole arrow point)
Answer:
I think A does because there are so many letters in their so a
Define energy and power then describe the relationship that exists between them.
Try for at least 3 complete sentences
Sentence starters:
Energy is.... Power is.... They are related because.....
Answer: With power and energy, power is units of energy divided by time. The same difference as distance and velocity. The units of power are watts, the units of energy are joules.
Explanation:
abcdefghijklmnopqrstuvwxyzExplanation:abcdefghijklmnopqrstuvwxyz
What is the product of the unbalanced combustion reaction below?
Answer: A
Explanation:
Answer:
C
Explanation:
because the combustion reaction produce vapor water and CO2
16.A mixture of carbon dioxide and hydrogen gases contains carbon dioxide at a partial pressure of 217 mm Hg and hydrogen at a partial pressure of 703 mm Hg. What is the mole fraction of each gas in the mixture?
XCO2 =
XH2 =
x CO₂ = 0.236
x H₂ = 0.764
Further explanationGiven
P CO₂ = 217 mmHg
P H₂ = 703 mmHg
Required
The mole fraction
Solution
Dalton's law :
The total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases
Can be formulated:
P tot = P1 + P2 + P3 ....
P tot for the mixture :
= 217 mmHg + 703 mmHg
= 920 mmHg
Mole fraction of each gas :
x CO₂ = 217 mmHg/920 mmHg = 0.236
x H₂ = 703 mmHg/920 mmHg = 0.764
what is the percent composition of (NH4)2S?
if you can, include the problem shown pls
extra.
Mg(NO3)2
please don't just take the points please :(, do the problem
thank you <333
(NH₄)₂S
%N= 41.18%
%H =11.76%
%S=47.06%
Mg(NO₃)₂
%Mg=32.43%
%N=18.92%
%O=(64.86%
Further explanationGiven
(NH₄)₂S
Mg(NO₃)₂
Required
The percent composition
Solution
(NH₄)₂S MW=68 g/mol
%N=2. Ar N / MW (NH₄)₂S x 100%
%N= (2.14/68) x 100% = 41.18%
%H =(8.1/68) x 100%=11.76%
%S=(32/68)x 100%=47.06%
Mg(NO₃)₂ MW=148 g/mol
%Mg=(2.24/148)x100%=32.43%
%N=(2.14/148)x100%=18.92%
%O=(6.16/148)x100%=64.86%
Which best describes MgO?
1)This is an ionic compound; it is named
magnesium monoxide.
2)This is a covalent compound; it is named
magnesium monoxide.
3)This is an ionic compound; it is named
magnesium oxide.
4)This is a covalent compound; it is named
magnesium oxide.
Toxic chemicals in drinking water usually are reported and a safety level specified in units of parts per million (ppm) by mass. What is the molar concentration of arsenic in a water sample that has 1 ppm arsenic (As)
Answer:
The molar concentration of water sample that has 1 ppm arsenic is 1.33 * 10⁻⁵ M
Explanation:
1 parts per million (ppm) means 1 part of solute in a million parts of solution.
Since 1 million, 10⁶ mg = 1 kg, 1 ppm = 1 mg/kg
The density of water = 1.0 kg/L, therefore, the volume of 1 kg of water = 1 L
Hence, 1 ppm = 1 mg/kg = 1 mg/L
molar mass of arsenic = 75 g/mol
1 mg of arsenic = 10⁻³ g or 0.001 g
number of moles of arsenic in 0.001 g of arsenic = 0.001 g / 75 g/mol = 1.33 * 10⁻⁵ moles
Molar concentration = 1.33 * 10⁻⁵ mol / 1 L = 1.33 * 10⁻⁵ M
Therefore, the molar concentration of water sample that has 1 ppm arsenic is 1.33 * 10⁻⁵ M
How would you solve this?
_Li + __F2 → _LIF
How do I balance this?
Answer:
2Li + F₂ → 2LiF
Explanation:
The reaction expression is given as:
Li + F₂ → LiF
We are to balance the expression. In that case, the number of atoms on both sides of the expression must be the same.
Let use a mathematical approach to solve this problem;
Assign variables a,b and c as the coefficients that will balance the expression:
aLi + bF₂ → cLiF
Conserving Li: a = c
F: 2b = c
let a = 1, c = 1 and b = [tex]\frac{1}{2}[/tex]
Multiply through by 2;
a = 2, b = 1 and c = 2
2Li + F₂ → 2LiF
A silver cube with an edge length of 2.28 cm and a gold cube with an edge length of 2.75 cm are both heated to 82.8 ∘C and placed in 111.5 mL of water at 20.2 ∘C . What is the final temperature of the water when thermal equilibrium is reached?
Solution :
Given :
length of silver cube = 2.28 cm
length of gold cube = 2.75 cm
Initial temperature = 82.8°C
Volume of silver cube is
Volume [tex]$=(\text{edge length})^3$[/tex]
= [tex]$(2.28)^3$[/tex]
[tex]$= 11.8 \ cm^3$[/tex]
mass of silver cube
Mass, [tex]$m_s = \text{density} \times \text{volume} $[/tex]
= 10.5 x 11.8
= 123.9 g
Similarly, the volume of gold cube is
Volume [tex]$=(\text{edge length})^3$[/tex]
= [tex]$(2.75)^3$[/tex]
[tex]$= 20.79 \ cm^3$[/tex]
mass of gold cube
Mass, [tex]$m_g = \text{density} \times \text{volume}$[/tex]
= 19.3 x 20.79
= 401.247 g
Now
heat lost by silver and gold cube = heat gained by water
∴[tex]$m_g .c_g \Delta T + m_s .c_s \Delta T = m_w.c_w \Delta T$[/tex]
[tex]$m_g .c_g (82.8- T) + m_s .c_s (82.8- T) = m_w.c_w (T - 20.2)$[/tex]
[tex]$401.247 \times 0.1264 (82.8- T) + 123.9 \times 0.2386 (82.8- T) = 111.5 \times 4.184 (T - 20.2)$[/tex]
Now solving the equation
[tex]$50.71 (82.8- T) + 29.56 (82.8- T) = 466.51 (T - 20.2)$[/tex]
Final temperature, T = 31.27°C
5.Calculate the number of moles of 18.0 dm3 of carbon monoxide (CO) at rtp.
Answer:
0.81mole
Explanation:
Given:
Volume of carbon monoxide = 18dm³
Unknown
Number of moles of carbon monoxide = ?
Solution:
To solve this problem;
1 mole of any gas at rtp occupies a volume of 22.4dm³
So;
x mole of carbon monoxide will occupy a volume of 18dm³ at rtp
22.4x = 18
x = [tex]\frac{18}{22.4}[/tex] = 0.81mole
How does thermal energy affect chemical changes
Answer:
It makes chemicals hot or cold which makes chemicals react differently
Explanation:
mark me brainliest
the mass of the sun
what is the mass of the sun
Answer:
1.989 × 10^30 kg
Explanation:
Hope this helps! :3
☁️ Answer ☁️
A solar mass is the mass of the sun. Or, more precisely, it's 1.989 x 10^30 kilograms — about 333,000 Earths. Astronomers use a solar mass as a basic unit of mass.
Dear fool, you will always be a fool.
Happy April Fools Day.
Hope it helps.
Have a nice day noona/hyung
Name the four different types of Spheres belonging to Earth and give examples of Renewable resource and the Biotic factors that exist in those spheres. There are three Abiotic (Non Living) spheres and the Biotic (Living)Biosphere exist within the three of the others
Write a short summary of the renewable resources in each sphere and explain how the biosphere interacts within the three of them
Answer:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
Explanation:
Which activity is an example of a scientist using creativity?
a scientist exploring evidence from other fields of science to support findings
a scientist transferring data from one experiment into the data analysis from a second experiment
a scientist repeating an older experiment with the latest technology to verify the original findings
a scientist using the latest graphing software to analyze and present the research
A scientist exploring evidence from other fields of science to support findings is an example of a scientist using creativity.
What is creativity?Creativity is a mental cognitive ability that involves the creation and/or discovery of a hidden process.
In science, creativity refers to the application of mental skills to create new experimental designs and extrapolate findings.
In conclusion, a scientist exploring evidence from other fields of science to support findings is an example of a scientist using creativity.
Learn more about creativity here:
https://brainly.com/question/26061350
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2. All elements are composed of extremely small particles called
Answer:
Atoms
Explanation:
4.Calculate the volume of 40g of Helium (He) at rtp.
Answer:
2.24dm³
Explanation:
Given parameters:
Mass of He = 40g
Unknown:
Volume of Helium = ?
Solution:
To solve this problem, we convert the given mass to number of moles.
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
molar mass of He = 4g/mol
Number of moles = [tex]\frac{4}{40}[/tex] = 0.1mole
So;
1 mole of gas at rtp occupies a volume of 22.4dm³
0.1 mole of He will occupy a volume of 0.1 x 22.4 = 2.24dm³
Please help me.
Thank you!
Answer: Positive
Explanation: Just a guess
Answer:
Positive
Explanation:
a. glycerol
b. propane
c. alkene
d. amino acid
e. isopropanol
f. ring structure
g. alkyne
h. ethylene glycol
i. ester
j. organic acid
1. shape of aromatic hydrocarbons ___.
2. an alcohol with two hydroxyl groups ____.
3. molecule formed when a carboxylgroup replaces a hydrogen in a hydrocarbon __.
4. unsaturated hydrocarbon with at least one double bond ___.
5. example of a saturated hydrocarbon __.
6. molecule in which the —NH, radical replaces a hydrogen in a hydro-carbon __.
7. substance that forms when anorganic acid reacts with an alcohol __.
8. rubbing alcohol __.
9. an alcohol with three hydroxyl groups __.
10. hydrocarbon with at least one triple bond between carbon atoms __.
What is the general form of a single replacement reaction
Answer: A. AB+C->CB+A
Explanation:
The chemical reaction includes the reactant and products. The single replacement reaction can be given as AB + C → CB + A. Thus option a is correct.
What is a single replacement reaction?A single replacement reaction is the exchange reaction that involves the substitution of a single element of the reactant with another element of the reactant species.
The reaction between zinc and copper chloride is a single replacement reaction as copper is replaced by zinc in the copper chloride compound to produce zinc chloride and copper.
Therefore, option A. AB + C → CB + A is the single replacement reaction.
Learn more about single replacement reaction here:
https://brainly.com/question/13903783
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HELP PLS 50 POINTSSSS
Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out more
information about items, some have more details available when you click on them. Drag and drop each item onto the proper area of the
diagram. If an item describes more than one category, be sure to place it in the overlapping space.
ITEM BANK: Move to Bottom
Carbon dioxide is a product. Carbon dioxide is a reactant. Carried out in animals.
Carried out in plants
Chemical Reaction
Oxygen is a product
Oxygen is reactant Produces usable energy sourc
Cellular Respiration
Both
Photosynthesis
Answer:
Carbon dioxide is a product (cellular respiration)
Carbon dioxide is a reactant(photosynthesis)
Carried out in animals(cellular respiration)
Carried out in plants(both)
Chemical reaction(cellular respiration)
Oxygen is a product(photosynthesis)
Oxygen is a reactant(cellular respiration)
Produces usable energy source(photosynthesis)
Your welcome!!! Plz mark brainliest.
Answer:attached is the correct answer
Explanation:
Photosynthesis and Respiration