Answer:
it is a poem
Explanation:
one spoonful of drink crystals has a mass of about 4g. Calculate the mass of the crystals that dissolved in 100mL of water to form a saturated solution
Answer:
We want Concentration=Mass of solute100 mL volume of solvent . We make the reasonable assumption that the volume of solution is equal to 40⋅mL
Answer as many as you'd like (Please write the number of the one you answer)
Unit 5 - Chemical Reactions
Chemical Change/Law of Conservation
1. What is the law of conservation of mass?
Observing Chemical Change
2. How can Changes in Matter Be Described?
3. How do you identify a chemical reaction?
Describing Chemical Reactions
4. What information does a chemical equation contain?
5. How is mass conserved during a chemical reaction?
6. What are three types of chemical reactions?
Controlling Chemical Reactions
7. How do reactions get started?
8. What affects the rate of a chemical reaction?
Answer:
1. The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. For example, the carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to gas but its mass does not change.
2. There are two types of change in the matter: physical change and chemical change.
3. Change in the arrangement of Chemicals
4. A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right). The two are separated by an arrow symbol (read aloud as yields). Each individual substance's chemical formula is separated from others by a plus sign.
5 During the rearrangement of atoms mass is conserved unless u add more substances
6. synthesis, decomposition, combustion,
Explanation:
I hope this helps, I don't remember the exact answers,
Please help its also urgent ( I have 7 more questions)
Answer:
The answer is D) High Temperature and Little Rainfall
Explanation:
Answer:
ITS D
Explanation:
ITS d i hope this helps you
How can a chemical reaction be sped up?
Select from the drop-down menu to correctly complete the statement.
Pack in more of the reactant to increase the
A.) Catalyst
B.) Concentration
C.) Surface Area
D.) Temperature
.
Answer: the answer would be A) Catalyst because it can help speed up the chemical reaction
Explanation: the answer would be A) Catalyst because it can help speed up the chemical reaction. Hopes this helps :)
PLEASE HELP! Punnett Square Practice Fill out each Punnett square based on the information in the problem. Then write in the phenotype for each genotype and the probability of its occurrence. Let's do the first one together. (Pictures of questions linked below)
i need help with this
Answer:
Search up Cell Divison Reinforcement key and it pops up
Explanation:
Literally took 30 seconds to find online or individually ask every question.
can someone help me with it??
Answer:
C. Kinetic Energy
Explanation:
Which statement describes the nutrient cycle?
the movement of nutrients within all soil layers that allow plants to grow and seeds to germinate
the movement of nutrients from the physical environment into living organisms and back again
the movement of the three non-mineral nutrients that are absorbed through the soil
the movement of nutrients within plants that allows them to conduct photosynthesis
Answer:
This Soils and Plant Nutrients Chapter from the Extension Gardener Handbook examines the physical and chemical properties of soil
Answer:
i have no clue tell me
Explanation:
Which statement describes the nutrient cycle?
the movement of the three non-mineral nutrients that are absorbed through the soil
the movement of nutrients within all soil layers that allow plants to grow and seeds to germinate
the movement of nutrients within plants that allows them to conduct photosynthesis
the movement of nutrients from the physical environment into living organisms and back again
Please help this is the last question
Answer:
Hummingbirds are attracted to bright colors.
Explanation:
Because they have a greater concentration of cone cells in the retina of their eyes making them sight bright colors more clearly and vibrantly.
can someone help me with it?
Answer:
low average wind speeds
Answer:
Honestly, I think its the first one, many turbines
Follow these steps:
Carefully measure out 3 Tablespoons of cold water into the jar.
Now measure out 1/8 teaspoon of salt and put it into the jar with the water. Put the lid on the container and shake it. Keep shaking until the salt is completely dissolved. To determine whether it has completely dissolved, hold the container up to the light and look carefully at the bottom, or open the lid and look into it. If you see little grains of salt there, it is not completely dissolved, so keep shaking until it looks the same each time you look.
If the salt does not dissolve completely after five minutes of vigorous shaking, write this in your notebook and go on to step 4. If the salt dissolves completely, add another 1/8 teaspoon of salt and repeat the process. Repeat over and over, keeping track of how many 1/8 teaspoons you add. Stop when you can’t get the salt to dissolve no matter how hard or long you shake the container.
Record how much salt you were able to dissolve in the 3 Tablespoons of water in the solubility data table.
Repeat steps 1-4, but this time using very warm or hot water. Before you do it, run the jar under hot water to warm it up so the water doesn’t cool off right away. Be sure to use the same amounts of water and salt as you did the first time. The only variable should be the temperature of the water.
Record your results, and then compare them with your previous results.
Were there any differences in the amount of salt that dissolved in the warm water versus the cold water?
Answer:
Alot of salt dissolved in warm water than in cold water
Explanation:
This is because cold water does not dissolve alot of salt and hot water dissolves alot of salt because of the kinetic energy acting on the liquid
One city is located north of the equator and experiences average rainfall and warm temperatures. Another city is located exactly the same distance from the equator, but south. How will these two climate areas be the same or different?
The temperature and precipitation will both differ.
The temperature and precipitation will be similar.
The temperature will differ but the precipitation will be the same.
The precipitation will differ but the temperature will be the same.
Answer:
Temperature gets warmer and precipitation increases
Explanation:
...pretty sure i researched it to verify
Answer: It's is not c or d
Explanation: I can not find the correct answer it will differ between A and B
SORRY I COULDN'T HELP MORE
1. Are all responses to the environment immediately obvious? Be specific and explain your reasoning.
2. Explain the concept of homeostasis. Give an example.
3. At what level does life evolve?
homeostasis means "steady state". Homeostasis describes how the body regulates its process to keep its internal conditions as stable as possible. Homeostasis is necessary because human cells are efficient but very demanding.
Gravity is also affected by mass.which is the amount of matter in an object. As the amount of mass increases, the force of gravity
Answer:
As the amount of mass increases, the force of gravity INCREASE.
Explanation:
Remember, Resistance = Voltage/Current
How much resistance allows a 6 V battery to produce a current of 0.006 A?
a.) 1000 ohms
b.) .036 ohms
c.) 100 ohms
d.) 0.36 ohms
How was sending your light and sound messages similar to the way that digital messages are sent?
Answer:
Morse code can communicate letters and numbers using light or sound. Sailors on ships can flash lights using Morse code to send messages from one ship to another. Morse code is a way to communicate over distances. Morse code can communicate letters and numbers using light or sound.
Neutron stars are incredibly dense. Describe a neutron star in terms of a sugar cube.
Is it true or false that some methods of transmitting information are more effective than others?
Answer:
Yes.Explanation:
Using a cellphone is more effective than a typewriter.i need help with this
How can a chemical reaction be sped up?
Select from the drop-down menu to correctly complete the statement.
Increase the
A.) Catalyst
B.) Concentration
C.) Surface Area
D.) Temperature
to allow the reaction to happen with more energy.
Answer:
Temperature i think
Explanation:
Answer:
A catalyst
Explanation:
Isabel pushes a toy car, giving it kinetic energy. When this happens, what happens to the energy in her arm?
A) The energy in her arm increases.
B) The energy in her arm is destroyed.
C) The energy in her arm decreases.
D) The energy in her arm stays the same.
Answer:
c the energy in her arm decrease
Answer:
it's either C or D try C
srry if im wrong
8. How many of the substances listed in the table will float in liquid water if the water has a density of 1g/cm3?
A. none
B. three
C. two
D. one
Please help 20 points!
What is the thermocline?
Question 10 options:
a slope in the ocean
an instrument for measuring temperature in the ocean
a zone of rapid temperature change between the warm surface waters and the cooler deep waters
the warmer upper layer of the ocean
Help me please??????? :/
what can you add to play-doh to make it strech
Answer:
Cornflower or Cornstarch
Isabel pushes a toy car, giving it kinetic energy. When this happens, what happens to the energy in her arm?
A) The energy in her arm increases.
B) The energy in her arm is destroyed.
C) The energy in her arm decreases.
D) The energy in her arm stays the same.
Answer:
c the energy in her arn decrease
(GIVING BRAINLYIST) How does temperature and precipitation change as you increase in elevation?
Temperature gets warmer and precipitation increases.
Temperature gets cooler and precipitation increases.
Temperature gets warmer and precipitation decreases.
Temperature gets cooler and precipitation decreases.
Answer:
Temperature gets cooler and precipitation increases.
Explanation:
As average temperatures at the Earth's surface rise, more evaporation occurs, which, in turn, increases overall precipitation. … In addition, higher temperatures lead to more evaporation, so increased precipitation will not necessarily increase the amount of water available for drinking, irrigation, and industry
Higher elevations cause temperatures to drop because the higher up in the atmosphere you go, the colder it gets due to air pressure, in turn causing precipitation to freeze, creating snow. Lower elevations are a lot warmer because the air pressure is not as pressurized causing the temperature to be warmer
Answer:
Temperature gets colder and precipitation decreases
Explanation:
You move farther away from the very hot core of the earth, and your going above the clouds so no rain
Which statement about living things and their environment is true?
Answer:
Which statement about living things is true?
All living things are made of cells, use energy, respond to stimuli, grow and reproduce, and maintain homeostasis
Explanation:
Answer:
cells, use energy, respond to stimuli, grow and reproduce, and maintain homeostasis
Explanation:
What evidence do scientists have to support the big bang theory as the origin of the universe?
Explanation:
Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Answer:
Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Explanation:
PLEASE help
Which of these factors play a role in creating weather conditions
Question 7 options:
temperature
humidity
air pressure
wind
all of these
Answer:
All of the above
Explanation:
I'm no expert but it looks like all of those would affect weather somehow