Answers
Related Questions
mixture is a
Pek the word that best completes the following sentence. A
mixture in which the composition is uniform throughout the mixture.
homogeneous
heterogeneous
compound
Need at
Answers
Answer:
compund
Explanation:
i took the quiz
Cu + 2AgNO3 → 2Ag + Cu(NO3)2
How many copper (Cu) atoms are there in Cu(NO3)2?
Answers
2. Which situation best represents conduction?
A. Heat from a campfire
B. A hot air balloon taking off
C. Touching a hot piece of metal
D. Getting sunburned
Answers
Answer:
c
Explanation:
touching a hot piece of metal. because the energy or the hotness of the pot is touching your hand which is a direct contact.
What is the function of the urinary system?
Answers
Answer:
Explanation:
The Urinary System's function is th filter blood and create urine as a waste by-product
Please give brainliest
Answer:
The urinary system's function is to filter blood and create urine as a waste by-product. The organs of the urinary system include the kidneys, renal pelvis, ureters , bladder and urethra.
I HOPE IT HELPS ❤❤Q.3.Which of the following chemical reactions is an acid-base reaction?
a. 4 C5H90 (1) + 29 02 (9) - 20 CO2 (g) + 18 H20 (9)
b. Ca (s) + F2 (g) - CaF2 (s)
c. HBr (aq) + NaOH(aq) - H20 (1) + NaBr (aq) O
d. 3 Pb (s) + 2 H3PO4 (aq) - 3 H2 (g) + Pb3(PO4)2 (aq)
Help me out please I'll make you brainliest answer
Answers
Answer:
C
Explanation:
Hbr is acidic
NaOH is a base
plus u get a salt from this equation as well as water
thank me later kid
40 points, please help I seriously cannot fail this class and I am extremely confused. All you have to do is solve using dimensional analysis. If you can type some form of work that would be helpful. I will go answer a question on yours as well also.
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Answer:
the answer to the first is 5.5 meters :)
In which directions does liquid pressure act
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What are the units for speed
A. m/s
B. km/s ^ 2
C. m/s^2
D. m^2/s^2
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m/s is the correct answer of them.
temperature is a measure of the ______ of an object. 1. kelvin 2. insulator 3. average KE 4. radiation 5. specific heat
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Answer:
5
Explanation:
Temperature calculates heat/the temperature in the specific location.
PLEASE HELP IM FAILING AND TODAY IS THE LAST DAY!! PICTURE PROVIDED!!
In your graph, which variable went on the x-axis? Which variable went on the y-axis? Explain why for both.
Answers
Answer:
Since the trials depend on the number of shakes, trials is the DEPENDENT VARIABLE and shakes is the INDEPENDENT VARIABLE as something depends on it.
Independent is on the X axis
Dependent is on the Y axis
How would you create a positive charge?
Answers
Answer:
When electrons are transferred to or removed from an object.
Explanation:
Because electrons have a negative charge, when they are added to an object, it becomes negatively charged. When electrons are removed from an object, it becomes positively charged.
How do you test for starch in green plant
Answers
Answer:
1,Iodine solution is used to test leaves for the presence of starch. ...
2.After a few minutes, the parts of the leaf that contain starch turn the iodine from brown to blue/black.
3.The leaf on the left is a variegated leaf
Explanation:
Answer:
1.Iodine solution is used to test leaves for the presence of starch. ...
2.After a few minutes, the parts of the leaf that contain starch turn the iodine from brown to blue/black.
3.The leaf on the left is a variegated leaf.
Which element tends not to react with other elements?
A
xenon
B
hydrogen
C
phosphorous
D
potassium
Answers
Answer:
I believe the answer is Xenon since it is a noble gas
Answer:
I think the answer is A
Explanation:
If im wrong the answer is C
Write 0.000 000 000 402 000 in scientific notation.
Answers
Answer:
0.000000000402000 in scientific notation is 4.02000 × 10-10
When molybdate (MoO3) and Zinc (Zn) are heated together they react in this equation:
3Zn + 2MoO3 → Mo2O3 + ZnO
What is the mole ratio of Zn to Zno?
Answers
Answer: The mole ratio of Zn to ZnO is 3: 3.
Explanation:
According to law of conservation of mass, mass can be neither be created nor be destroyed. The mass on reactant side must be equal to the mass on product side. Thus the atoms of each element on both side of the reaction must be same.
The balanced chemical reaction is:
[tex]3Zn+2MoO_3\rightarrow Mo_2O_3+3ZnO[/tex]
Here 3 moles of Zn combine with 2 moles of [tex]MoO_3[/tex] to give 1 mole of [tex]Mo_2O_3[/tex] and 3 moles of [tex]ZnO[/tex]. Thus the mole ratio of Zn to ZnO is 3: 3.
What Period # is this element found in? P
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when water is pushed out of the way it is said to be____________________.
Answers
How many molecules are in 0.56 moles of NH3?
Answers
Answer:
8.9x1023
Explanation:
When a student squeezes a balloon, it changes shape. In which state of
matter is the substance inside the balloon?
Answers
Answer:
gas
Explanation:
Answer:
Liquid and gas
Explanation:
TEST QUESTION PLS HELP What are isotopes? Write isotopes of three different elements, showing their atomic number and mass number. (I'll give brainliest)
Answers
Answer:
Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element's atomic number on the Periodic Table
Explanation:
Hope this helps some? :)
The geocentric theory was once accepted as an explanation of how objects were positioned in our solar system. Which statement best explains this theory?
A The orbits of the planets are elliptical and not circular
B The Sun is considered to be the center of the Universe
C Earth is considered to be the center of the revolving planets and stars
D The Sun is considered to be the center of the revolving planets and stars
Answers
Answer: c
Explanation:
Drew added yeast and sugar to lukewarm water and placed it in a flask. He
stretched a balloon over the opening of the flask. After several minutes, he noticed
small bubbles rising along the side of the flask as the balloon slowly began to inflate.
Drew concluded that -
A)a physical change was occurring
B) the bubbles indicated a chemical change
C) the water surger and yeast were products of a chemical reaction
D) the strong smell was evidence of a physical changer
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Drew added yeast and sugar to lukewarm water and placed it in a flask. Drew concluded that the bubbles indicated a chemical change. The correct option is B)
What are chemical changes?A chemical change is a change when the identity of a substance changes, and it converts into a new substance with new characteristics and a new identity.
When iron comes in contact with oxygen, it changes into rust, and it is a chemical change. A chemical change is a transformation in which the substance's chemical composition is altered through atom rearrangement. Atomic alterations cause changes in the molecular structure.
In the reaction, when yeast reacts with lukewarm water it forms bubbles, and in cold water, yeast does not perform well.
Therefore, the correct option is B) the bubbles indicated a chemical change.
To learn more about chemical changes, refer to the link:
https://brainly.com/question/29715141
#SPJ2
HHHAAAAALLLPPPP
It’s due tomorrow
Answers
Answer:
D.
Explanation:
Only 0.0035% of the electromagnetic spectrum is visible to the human eye
Hopefully this helped :)
HELP THIS IS DUE BY 11:59 TONIGHT ITS CURRENTLY LIKE 11:40??
identify: one herbivore, one carnivore, one omnivore, and one decomposer.
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herbivore: cow
carnivore: lion
omnivore: bear
decomposer: water mold
Answer:
rabbit, kingfisher,lizard, fungi
Explanation:
hrbivore is an organism which feeds on plants. carnivore is also an organism that feeds on other organism. omnivore is also an organism that feeds on other organisms. Decomposers arsle organisms that recycle nutrients.
1. Below is a diagram of an atom. Which particles are found at "A"?
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What is the molecular formula for CH2 with molar mass 90 g/mol?
Answers
Answer:
CH2: (1×12g/mol)+(2×1g/mol)=14 g/mol.
How many mols is 8.86 x 1023 atoms of silver?
Answers
Answer:
1.44moles
Explanation:
Given parameters:
Number of atoms = 8.86 x 10²³atoms
Unknown:
Number of moles = ?
Solution:
From the mole concept;
Number of moles = [tex]\frac{number of atoms }{6.02 x 10^{23} }[/tex]
Number of atoms = 8.86 x 10²³atoms
Number of moles = [tex]\frac{8.68 x 10^{23} }{6.02 x 10^{23} }[/tex]
Number of moles = 1.44moles
How many significant figures does 0.058 040 have?
a.6
b.7
c.5
d.4
Answers
Answer: c 5 because you don’t start counting until it hits a number >0 if it’s to the left of a decimal
Explanation:
Realice las siguientes conversiones: a) 72°F a °C, b) 213.8°C a °F, c)180°C a K, d) 315K a °F, e) 1750°F a K, f) 0K a °F.
Answers
Answer:
a) 72 °F= 22.22 °C
b) 213.8 °C= 416.84°F
c) 180 °C= 453.15 °K
d) 315 °K= 107.33 °F
e) 1750 °F= 1227.594 °K
f) 0 °K= -459.67 °F
Explanation:
Para realizar el intercambio de unidades debes tener en cuenta las siguientes conversiones:
Fahrenheit a Celsius: [tex]C=\frac{F-32}{1.8}[/tex]Celsius a Fahrenheit: °F= °C*1.8 + 32Celsius a Kelvin: °K= °C + 273.15Kelvin a Fahrenheit: F= (K -273.15)*1.8 + 32Fahrenheit a Kelvin:[tex]K=\frac{F-32}{1.8} + 273.15[/tex]Entonces se obtiene:
a) 72 °F= [tex]\frac{72-32}{1.8}[/tex]=22.22 °C
b) 213.8 °C= 213.8*1.8 + 32= 416.84°F
c) 180 °C= 180°C + 273.15= 453.15 °K
d) 315 °K= (315 -273.15)*1.8 + 32= 107.33 °F
e) 1750 °F= [tex]\frac{1750-32}{1.8} + 273.15[/tex]= 1227.594 °K
f) 0 °K= (0 -273.15)*1.8 + 32= -459.67 °F
How does oxygen become an ion with a -2 charge?
A. they gain two electrons
B. they lose two electrons
C. they share two electrons
Answers
Answer:
they gain two electrons
Explanation:
because they gain negativity :)
