Answers
Answer:
a
Explanation:
Related Questions
Solid iron pellets are heated, melted and drawn into wires. This is an example of a chemical reaction
True
False
Answers
Answer:
false
Explanation:
It is a physical reaction because it is being heated.
Answer:
False
Explanation:
Just because the iron was melted into wires does not mean that it isn't iron. It is still iron just in a different form.
classify the reaction
Answers
Answer:
Synthesis reaction
Explanation:
2Hg+O2 ⇒ 2HgO is in the direction of off
Element + Other Element ⇒ Product
The conceptual model of a synthesis reaction is 2Hg+O2 ⇒ 2HgO
___________________is the rate that an object moves in a certain direction. Question 3 options:
Speed
Displacement
Direction
Velocity
Answers
Answer: Velocity
Explanation:
i just took the quiz for k12
Velocity is the rate at that an object moves in a certain direction. The correct option is d.
What is velocity?The directional speed of an item in motion, as measured by a specific unit of time and observed from a certain point of reference, is what is referred to as velocity. A vector is a velocity. It comprises both magnitude and direction.
The size of velocity is speed. In still air, a particle gravitationally settles and quickly reaches its terminal velocity. The term "settling velocity" refers to a particle's final speed in a still fluid (also known as the "sedimentation velocity").
The particle settling velocity in the foreshore region plays a significant role in understanding fluctuations in the hydraulic regime and interactions between sediment and fluid in the surf zone.
Therefore, the correct option is d, Velocity.
To learn more about Velocity, refer to the link:
https://brainly.com/question/18084516
#SPJ6
Which statement best explains a way in which a cell gets rid of wastes?
Answers
Answer:
I would say B but you don't have to take my word for it
Answer:
D
Explanation:
Which phrases describe the open-ocean zone? Check all that apply.
very little sunlight
few nutrients
low temperatures
low density
located near coasts
Answers
Answer:
- few nutrients
- low temperatures
-very little sunlight
Explanation:
Answer:
I think it's: located near coasts.
Can someone help-
Not number 9)
Answers
Answer:
Metamorphosis
Explanation:
Complete metamorphosis occurs through four stages: egg, larva, pupa, and adult. The incomplete metamorphosis occurs
PLeasee help meee guys iam crying i need corect answer
Hydrogen gas is extremely flammable is it chemical property or physical?
Answers
Answer:
chemical
Explanation:
I believe it is a chemical property. Mark brainliest if this helps!
How many molecules are in 0.25 mole of CO?
Answers
1.5 x 10 to 23rd power
can you help me with this i don't think it is that hard i just have a lot on my mind.
Answers
Answer:
Global wind
Explanation:
The jet streams go around the whole earth from west to east
Hope you have a good day :)
The number 6.02 x 1023 is
Answers
Avogadro's constant
hope this helped:)
Answer:
6158.46
Explanation:
[tex]602 \div 100 \times 1023[/tex]80 foot-pounds of work is needed to move the sofa in Tyler's apartment. Which of the following statements is true?
Answers
If the temperature is -25 degrees C then water will be in a ___________ phase. However, if the temperature increases to 10 degrees C, it would be in a _________ phase.
A. solid...liquid
B. liquid...gas
C. gas...liquid
D. solid...solid
Answers
Answer:
A
Explanation:
Water is solid below 0 degrees C
Water is liquid between 0 and 100 degrees C
Water is gas above 100 degrees C
Sand is composed of silicon dioxide SiO2. A 210 gram sample has how many moles?
Answers
SiO2 molar mass=60.083
210/60.083=3.495
This sample has 3.495 moles of SiO2
The number of moles of 210 gram sample of sand contains 3.5 moles of mole of SiO₂
Sand is composed of silicon dioxide (SiO₂).
Therefore, let's calculate the molecular mass of SiO₂ . Therefore,
Molecular mass of SiO₂The molecular mass of the compound is the sum of the atomic mass of the compound.
SiO₂ = 32 + (16 × 2) = 28 + 32 = 60 g/molTherefore,
60 g = 1 mole of SiO₂
210 g = ?
cross multiply
number of moles = 210 / 60
number of moles = 21 / 6
number of moles = 3.5 moles
learn more on moles here:https://brainly.com/question/4816100
The atomic size of zirconium is smaller than
a. niobium
b. Yttrium
c. Molybdenum
d. None of the above
Answers
Answer:
b
Explanation:
because hahamaskdjdjskskskskkssksksks
Which of the following is the smaller atom: magnesium or chlorine?
Answers
Answer:
Chlorine atoms are smaller
Explanation:
Magnesium have more electrons than chlorine.
Answer: Chlorine
Explanation: Since chlorine's 17 protons are greater than magnesium's 12 protons, chlorine will have a greater effective nuclear charge to draw chlorine's valence electrons closer to the nucleus and, thus, chlorine is expected to have the smaller atomic radius, while magnesium with the lower effective nuclear charge is expected to have the larger atomic radius.
QUESTION FOR THE GIRLS!!!!
What do most girls look for in a guy?
Looks?
Height?
Attitude?
Answers
Explanation:
The right answer is Look .........
Certain females may only love a male for his looks and money.
Certain females may love a male for his personality.
Certain females may love a male depending on his height.
That's all I know.
If the amount of energy required to break bonds in the reactants is more than the amount of energy released in forming bonds in the products, then the reaction will have a negative change in enthalpy (−ΔH). (2 points)
True
False
CH AT FOR THE WeebsRUs
Answers
Answer:
YASSSSSSS
Explanation:
i think the answer is true
help please asap. chem sucks
Answers
I'm assuming that C is carbon.
[tex]4.590 \: mol \: c \times \frac{12.01 \:g \: c}{1 \: mol \: c} [/tex]
55.1259 g of C
pls help i have 2 hours to do this
Answers
4. When is it appropriate to use Roman numerals in naming compounds?
Answers
Answer:
Explanation:
Roman numerals are used in naming ionic compounds when the metal cation forms more than one ion.
Activity 7 Let's Think First
Directions: Below are possible situations during an earthquake. Encircle the letter of the appropriate action.
1. If you are outside of your house, move away from the buildings.
A. I will do it
B. I will just run anywhere.
2. If you are inside your house, get cover under a table.
A. I will do it
B. I will not do it
3. If you are in a moving car, what will you say to the driver?
A. Just keep driving.
B. Please stop.
4. Drop to the ground and protect your head.
A. I will do it
B. I will not think about it.
5. Prepare a disaster emergency kit beforehand.
A. I will do it
B. I will not do it.
Answers
2. a.
3. b.
4. a.
5. a.
please answer 3 plzzzz
7th grade science
Answers
Answer:
Explanation:
Show us the picture, then we can help.
Help with stochiometry asap
Answers
find the moler mass of P2S3
Answers
Answer:
158.2 g/mol
Explanation:
Being able to curl your tongue is a recessive trait (t), while not being able to curl your tongue is a dominant trait (T).
Having curly hair is also a recessive trait (s), while having straight hair is a dominant trait (S).
Parent 1 can curl their tongue (tt) and also has straight hair (Ss). Parent 2 cannot curl their tongue (TT) and has
curly hair (ss). In your notebook, perform a dihybrid cross for these traits. Parent 1: ttSs Parent 2: TTSS
13
What are the Parent 1 gametes? (HINT: FOIL. There will be 4 genotypes)
14
What percent of offspring can curl tongue and have straight hair?
15
What percent of offspring cannot curl tongue and have curly hair?
Answers
the spectral classes of four stars are shown in comparison with a Hertzsprung-Russell diagram. Based on the information which star is most like the sun?
Answers
Answer: star 3
Explanation: i did the test
Answer: star 3
Explanation:I did the test
HELP NEEDED
How many nanoliters are in 1 liter. Show work
Answers
1 000 000 000 nanoliters
particles are very ..........
Answers
Answer:
pls comment if this helps
Explanation:
small this is because people cant see them
Plz help how do I predict the shape of the molecule for GaBr3
Answers
Explanation:
GaBr3 is called gallium tribromide. It is composed of one gallium atom and three bromide atoms. Within a molecule of gallium tribormide, there are three bonding electron pairs and zero lone pairs of electrons. Such a configuration results in the trigonal planar molecular shape.
Answer:
GaBr3 is called gallium tribromide.
Explanation:
It is composed of one gallium atom and three bromide atoms. Within a molecule of gallium tribormide, there are three bonding electron pairs and zero lone pairs of electrons. Such a configuration results in the trigonal planar molecular shape.
Hope this helps! :)
An ionic bond forms between what two types of atoms?