Answer:
D: All of the above
Explanation:
It's all of the above, they are all pretty similar to the accurate answer.
Answer:
D
Explanation:
How many grams of Sodium will have the same number of atoms as 6 grams of Magnesium?
Atomic mass of Sodium is 23 u and atomic mass of Magnesium is 24 u.
Answer:
92gm
Explanation:
Atomic mass of Mg=24g=1 mole of Mg
∴ 24g =1 mole of Mg contain 6.022×10^23 atom
∴ 6gm contains 246.022×1023×6
=4×6.022×10^23 atoms
Now according to question, there are 6.022×1023 atoms of Na
23gm of Na contains 6.022×10^23 atoms
∴6.022×4×10^23 atoms of Na weighs 23×6.022×10^23×4/6.022×10^23⇒92gm
What do you call all the water on Earth's surface?
Answer: The hydrosphere includes all of the water which is on the surface of the planet. A planet's hydrosphere can be vapor, ice, or liquid.
Answer:
hydrosphere
Explanation:
17 POINTS!!! JUST DO A B C D PLS!!!! PLS DONT COMMENT IF YOU DONT KNOW IT ITS DUE BY TOMORROW AND I CANT KEEP WASTING POINTS PLS
Answer:
A B C D E
Explanation:
Cube has a mass of 15g and the volume is 30cm what’s its density
Need answer ASAP.
Which areas of the Earth receive the LEAST amount of sunlight?
A-the equator
B-the temperate zone
C-the tropics
D-polar regions
HELP PLEASE
Chemical name for As2S3
Answer:
Chemical name for As2S3 is Arsenic sulfide
Explanation:
Answer:
Arsenic Sulfide
Explanation:
Which group of elements should all have similar chemical behavior?
magnesium, strontium, and sodium
b) sulfur, phosphorus, and silicon
c) hydrogen, oxygen, and nitrogen
d) argon, helium, and neon
Answer:
the correct answer is D
A continental slope is the boundary between what to types of Earth's crust?
A Basalt and Sandstone
B Convergent and Divergent
C Continental and Oceanic
D Volcanic and Sedimentary
Answer:
c
Explanation:
I took the k12 test and got it right
A continental slope is a boundary between the Continental crust and Oceanic crust. Therefore, option (C) is correct.
What is a continental slope?A continental slope can be described as the slope between the outer edge of the continental shelf and the deep ocean floor. The continental slope is defined as a cut by submarine canyons in many locations and marks the seaward edge of the continental shelf.
Continental slopes follow the boundary between continental and oceanic crust. The Continental slope has a steepness range from 1 to 25 degrees, the average is 4 degrees.
The continental margin lies between the continental shelf and the abyssal plain and comprises a continental slope that is surrounded by the flatter continental rise. It contains thick sediments deposited by currents from the shelf and slope.
The shelf generally ends at a point of increasing slope known as the shelf break and the sea floor under the break is the continental slope.
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Who would most likely be required to work with sodium hydroxide?
a plumber
a gardener
a bricklayer
a mechanic
Need answer ASAP
Sodium hydroxide NaOH is proven to be an active agent for improving the mechanical properties of the bricks. Hence, bricklayer most likely need sodium hydroxide.
What is sodium hydroxide?Sodium hydroxide is an ionic compound formed by the metallic sodium and water. Sodium hydroxide has the chemical formula NaOH. It is a strong base and used as a reagent in many chemical synthesis which has to be carried in presence of a base.
Sodium hydroxide has an effect on the drying kinetics of bricks which are made with clay. Studies reported that the drying duration is linearly related with the concentration of NaOH.
Drying duration of bricks layers increases with increase in concentration of NaOH as well as the material porosity decreases. and hence the bricks will not show the visible cracks. Therefore, bricklayer need NaOH.
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Answer:
A) a plumber
Explanation:
Use what you know about periodic trends and the periodic table to answer the questions below.
Which atom attracts electrons most strongly when bonded?
oxygen (O)
magnesium (Mg)
Answer:
oxygen (O)
Explanation:
Answer:
A) oxygen (O)
Explanation:
edge 2023
what is the mass of 80.0mL of ethanol at 20 degress celcius
Answer: What is the mass, in grams, of 135 mL of ethanol? d=0.789 g/mL - the ethanol density. V=135 mL - the volume of ethanol. m=0.789g/mL*135mL=106.515g ~ 106.5g- the mass of ethanol.
Explanation:
Hope this helps :)
When the wedges are removed, predict which way the carts will move. Justify your prediction.
Answer:
I believe the carts will move towards each other, as positive and negative charges attract each other.
Explanation:
It is like a magnet when you put the opposite sides together. (North and South, South and North) or the plus goes to the minus and the minus goes to the plus.
If you take out the far left and right wedges, it may move a little away for a few seconds, but will move back together .
Another hypothesis is that if the sheets are flimsy, the sheets will attract each other, however, the sheets will join together at the top, but the carts will still stay at the same place.
1. A student measures the height of a small lamp to be 32cm. According to the factory specifications,
the lamp is actually 30cm. What is the percent error of the student's measurement?
Answer:
6.67 %
Explanation:
Given that,
Measured height of a small lamp, l = 32 cm
Actual height, l' = 30 cm
We need to find the percent error of the student's measurement. Percent error is given by :
[tex]\%=\dfrac{|l-l'|}{l'}\times 100[/tex]
Putting all the values, we get :
[tex]\%=\dfrac{|32-30|}{30}\times 100\\\\\%=\dfrac{2}{30}\times 100\\\\\%=6.67\%[/tex]
So, the percent error of the student's measurement is 6.67 %.
The model represents a
Answer:
i think you forgot to add a picture
How is a controlled experiment performed?
What strategies are involved in solving a science problem?
Answer:
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. State what steps you will take to design an experiment to test your hypothesis. Complete the experiment. Make observations. Record what happened during your experiment.
If 10 milliliters of liquid has a mass of 70 grams, what is its density?
O 7 g/mL
70 g/mL
0.7 g/mL
700 g/mL
Answer:
The answer is 7 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 70 g
volume = 10 mL
We have
[tex]density = \frac{70}{10} \\ [/tex]
We have the final answer as
7 g/mLHope this helps you
What are the 3 ways that materials can bond?
Answer:
Ionic bonding
covalent bonding
metallic bonding
Answer:
Iether they Heat up and melt together, Gravity pulls them together into one, Or the atoms inside one decide to bond with the other.
Explanation:
Question 3 is weird but I ran out of answers.
Why is there so much heat released following a combination reaction
Answer: When a combination reaction occurs between a metal and a non-metal the product is an ionic solid.
Explanation: Another hint(s): When magnesium burns in air, the atoms of the metal combine with the gas oxygen to produce magnesium oxide. This specific combination reaction produces the bright flame generated by flares.
What has the higher first ionization energy? Mg or Cl
Ionization Trend: First ionization energy will increase left to right across a period and increase bottom to top of a family (column).
If we compare Mg and Cl:
Mg is column 2 (far left) in the periodic table, while Cl is column 17 (far right). Based on the ionization rule explained above, Cl will have the higher first ionization energy.
Explain how balancing chemical equations relates to the law of conservation of matter.
Answer:
In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Showing that Mass cannot be created nor destroyed in a chemical reaction
Explanation:
Density is a physical property of a molecule that’s measured as mass per unit volume. (a) Given that density is usually expressed in the units of g/cm^3, calculate the density of a cube of plastic that has a mass of 2.331 g and an edge length of 1.500 cm (volume of a cube is V = l^3). (Show work pls + WILL MARK BRAINLIEST)
Answer:
0.690666... g/cm^3
Explanation:
density=mass/volume. mass is 2.331 g and using the length we can determine that the volume of the cube is 3.375 cm^3. 2.331/3.375= 0.6906666....
Which of the following statements about matter at
room temperature is true?
a. A solid has a definite volume, but a liquid's
volume can change.
b. Both a solid and a liquid Have a definite shape.
c. A solid has a definite shape, but a liquid's shape
can change.
d. Both a solid and a liquid have volumes that can
change.
e. A solid's shape can change, but a liquid has a
definite shape.
Answer: D
Explanation: If there was ice, the volume will change, if there was liquid (ex: water), it wouldn’t melt.PLZ HELP WILL GIVE U BRANILEIEST
Answer:
I'm pretty sure it is C
Explanation:
because it has the same number of protons and neutrons
6. How many millimeters are there in 2.0 meters?
7. How many grams are there in 5.0 kilograms?
8. How many liters are there in 15.0 centiliters?
NEED HELP ASAP-WILL GIVE 15 POINTS
Which sentence below accurately demonstrates the process of osmosis?
A. Leaving a raw egg in water for a period of time will cause the egg to swell in size.
B. A plastic bag filled with salt water is left in a larger container of water over night and all of the water in the large container becomes salty.
C. A drop of food coloring in water will slowly disperse throughout the water molecules and eventually completely change the water's color.
D. When a bottle of perfume is opened, the smell is stronger at first and then it fades.
Answer:
a
Explanation:
its a
1.the study of blood serology
2.the development of digital storage and technology for use in bioscience applications biochemistry
3.the study of poisons genetics
4.the study and use of biological structures and processes for industrial purposes bioinformatics
5.the scientific study of heredity epigenomics
6.the study of the effects and interaction of the expression of genes toxicology 7.the study of the chemistry of organisms biotechnology
8.the study of decomposition of bodies after death anthropology
The various field of science include the following;
1. Serology.
2. Bioinformatics.
3. Toxicology.
4. Biotechnology.
5. Genetics.
6. Epigenomics.
7. Biochemistry.
8. Taphonomy.
"Fields of Science"Science is the interest and application of information and understanding of the normal and social world taking after a precise strategy based on prove.
1. Serology: The study of blood.
2. Bioinformatics: The development of digital storage and technology for use in bioscience applications.
3. Toxicology: The study of poisons.
4. Biotechnology: The study and use of biological structures and processes for industrial purposes.
5. Genetics: The scientific study of heredity.
6. Epigenomics: The study of the effects and interaction of the expression of genes.
7. Biochemistry: The study of the chemistry of organisms.
8. Taphonomy: The study of decomposition of bodies after death.
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Select the reason cities tended to develop at the fall line on rivers.
Which of the following are signs of a chemical change/reaction? Select all that apply.
1. A change in mass.
2. A change in energy (hot, cold, light)
3. A change in volume.
4. A change in odor.
5. A change in color.
6.A change in phase/state.
7. Boiling.
8.Melting.
9. Freezing.
Answer:
the answers are
Explanation:
5,6,7,8&9.
Help Please. The word tsunami comes from a Japanese word meaning _________________. *
A. harbor wave
B. earthquake wave
C. tidal wave
D. harbor tide
Answer:
A.
Explanation:
give brainlist
Which statement describes an energy measurement?
A. An object travels 14 m.
O B. A car has a mass of 1,250 kg.
C. A rocket travels at 11 m/s.
D. Burning natural gas releases
21,000 kJ.
Answer:
D)a burning natural gas releases 21,000 kj
