Answer:
800 mg/ml
Explanation:
Recall that: 1 g = 1000 mg.
Hence
3.2 g of CaCl2 = 3.2 x 1000 = 3200 mg CaCl2
mass concentration of CaCl2 = mass of CaCl2/volume of water
= 3200/4 (mg/ml)
= 800 mg/ml
Therefore, the concentration (in mg/ml) of CaCl salt solution formed by dissolving 3.2g of CaCl2 in 4 ml of water is 800 mg/ml.
The concentration of calcium chloride solution will be 800 mg/ml.
The calculation of the concentration of CaCl₂:Based on the given information,
The mass of CaCl₂ given is 3.2 grams. The volume of water is 4 ml.Now the concentration of CaCl₂ can be determined as,
Concentration = Mass/Volume
Now putting the values we get,
[tex]Conc = \frac{3.2 g}{4 ml} \\Conc = 0.8 g/ml\\Conc = 0.8 g * 1000 mg/ml\\Conc = 800 mg/ml[/tex]
Thus, the concentration of CaCl₂ is 800 mg/ml.
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The _______ two objects are to each other, the stronger the force of gravity is between them.
Answer:
closer
Explanation:
The closer two objects are to each other, the stronger the force of gravity is between them.
define prediction and how it is used form a hypothesis
Answer: upon previous measurements, observations, and experiments, that attempts to explain a natural system or part of a system. Following the scientific method, a scientist sets up an experiment to test the hypothesis.
Explanation:
A population crisis usually occurs in a country that has:
A. minimal resources to support the population
B. lower average incomes
C.
a shortage of food
D. all of the above
Which is another word for 10 meters in the metric system? centimeter decimeter decameter hectometer
Answer:
decimeter
Explanation:deci means ten
Another word for 10 meters in the metric system is the decameter. Thus, the correct option for this question is C.
What is the metric system?The metric system may be defined as a system of measurement that significantly utilizes the meter, liter, and gram as base units of length (distance), capacity (volume), and weight (mass) respectively. In order to measure any small or large quantities, we use units derived from the metric system.
In the metric system, 10 meters is equal to 1000 centimeters. While 10 meters is equal to 100 decimeters. 10 meters is equal to 0.1 hectometers. While 10 meters is equal to 1 decameter. This unit we get from conversion factor.
Therefore, another word for 10 meters in the metric system is the decameter. Thus, the correct option for this question is C.
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A dairy farmer wanted to increase the amount of milk produced by his cows. He decides to test the effect of a particular feed additive. He gives half of his herd the additive. He maintains the amount of grazing time, the amount of water the cows drink per day, and even how often the cow gets chased by the local dog the same for all the cows. Each day the farmer milks the cows at the same time and compares the volume of milk.
Answer:
This question is incomplete; based on the understanding of the question, it aims at identifying the variables in the experiment conducted by the dairy farmer. The following variables will be provided in the answer: Independent, dependent, Control variable, Control group, Experimental group. The answers are:
Independent variable: FEED ADDITIVE
Dependent variable: AMOUNT (VOLUME) OF MILK PRODUCED
Constants: same amount of grazing time, the same amount of water the cows drink per day and the same frequency of how dogs chases the cows.
Control group: Herds that were not given the additive.
Experimental group: Herds that were given the additive
Explanation:
The independent variable in an experiment refers to the variable which is manipulated or changed in order to bring about a responding effect. The FEED ADDITIVE is the independent variable in this experiment.
The dependent variable is the variable that responds to the changes made to the independent variable. In this case, it is the AMOUNT/VOLUME OF MILK produced by the cows that responds to the effect of the feed additive, hence, it is the dependent variable.
In an experiment, a controlled variable or CONSTANT is the variable that is kept constant or unchanged throughout the experiment. In this case, the constants are the same amount of grazing time, the same amount of water the cows drink per day and the same frequency of how dogs chases the cows.
A CONTROL GROUP is the group that does not receive any experimental treatment in the experiment. It is used to compare the effect of the independent variable on the dependent variable. In this experiment, the control group are the HERDS that did not receive the feed additives.
The experimental group, on the contrary, are the groups that were subjected to experimental treatment. In this case, the experimental group are the HERDS that were given the feed additives.
imagine a bodybuilder flexing their muscles. which type(s) of tissue go into that action?
Answer:
The tissues that come into action are cartilaginous, bone, muscular and tendon.
Explanation:
It must also be taken into account that the joints are the queens of contortionist movements, they are the ones that are most in demand, and the ones that most control the movements together with the proprioceptors and the muscular golgi reticulum.
Joints are not mentioned in the answer because they are not a tissue, but a set of tissues.
The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, two squirrels, and millions of bacteria. Together, all of these organisms represent a(n)
Answer:
hey umm can u help me on my homework
Explanation:
Its NM history
Why are carbon compounds do important to life?
Ans: A compound found mainly in living things is known as an organic compound. Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.
"Francesco Redi was a scientist that performed an experiment to determine whether maggots formed from rotting meat. Versions of his experiments are described below. Meat was placed in two beakers. One of the beakers was left open to the air. The other beaker was covered with a fabric that only allowed air to get in. As the meat rotted, flies landed on the meat in the open beaker but were unable to get to the meat with the fabric over it. After a few days, maggots appeared on the meat in the open beaker, but not in the closed beaker. In the next experiment, rotting meat was placed in two beakers. Dead flies were placed in one beaker, and live flies were placed in the other beaker. Both beakers were sealed, allowing no air in. Maggots appeared in the beaker with live flies, but not in the beaker with dead flies." 1. Explain how this experiment disproves the theory of spontaneous generation. (3 points)
Answer:
Francesco Redi performed an experiment explained in the question to confirm wheather maggots formed from roeeting meat. He explained that maggots on meat do not form spontaneously.
These maggots come from the eggs laid by flies on the meat as it is only found on open meat jar where flies can go and lay their eggs. It disaproves the spontaneous generation thoery as if it was true open jar or closed jar every rotting meat jar must carry maggots on them.
Which organelle is paired properly with its function?
What are atoms?
A. Tiny particles that make up all matter
B. Tiny particles that can only be seen with a microscope
C. Tiny particles that look like gnats
D. Particles that are so large they can not be seen
Answer:
the smallest particle of a chemical element that can exist.
completeaza un tabel cu nume de plante de cultura ale caror seminte contin leucoplaste cu amidon, cu grasimi, si cu proteine
Answer:
pulses and legumes seeds.
Explanation:
Pulses and legumes seeds such as chickpea and mung bean are those seeds which contains starch, fat, protein and leucoplasts. Leucoplasts are present in pulses seeds which is responsible for the storage of starch, lipids, and proteins in the seed. So with the presence of leucoplasts in the seeds, starch, fat and protein stored inside the pulses and legumes.
Adaptive features of Giant land snail
Answer:
Body Adaptations ; The eyes of water-dwelling and land snails have adapted to perch on two eye stalks that can retract and extend from the snails' bodies. These eye stalks slip inside-out when retracting, protecting the snails' eyesight from predators, turf wars and the elements.
Shell Adaptations ; Snails' shells protect them from predators .
Breathing Apparatus ; Freshwater and marine snails have evolved gills, while terrestrial snails sport fully formed lungs.
Secretions ; The slime that snails secrete (the mucus )is an adaptation that helps terrestrial snails survive out of water.
Breathing Apparatus ; Terrestrial snails sport fully formed lungs.
Explanation:
difference between w subcellular and acellular particles
Explanation:
The main difference between acellular and cellular organism is that acellular organism doesn't contain cells and cellular organism contain cells.
WILL GIVE BRANLETS
What fraction does Point A on the number line below represent? A horizontal number line is shown from negative 1 to 0 to positive 1. There are tick marks to show increments of 1 over 8. Only the whole numbers are labeled. Plot Point A at 2 tick marks to the right of 0. fraction 4 over 8 fraction negative 4 over 8 fraction 2 over 8 fraction negative 2 over 8
Answer: the answer is 2over8
Explanation: the top person is wrong cause negative is to the left and positiveis to the right
pls give brainliest tell me if im wrong
The fraction that Point A on the number line below represent is negative 4 over 8. The correct option is B.
What is a number line?A number line is a picture of a graduated straight line that serves as a visual representation of real numbers in elementary mathematics.
Every point on a number line is assumed to be a real number, and every real number is assumed to be a point.
Number lines are horizontal straight lines with integers placed at equal intervals in mathematics. A number line can represent all of the numbers in a sequence.
The correct answer is -4/8. There are seven marks between 0 and -1, and -8/8 is -1. You count the lines from 0 to A, and you get four lines. Each line represents one eighth.
Thus, the correct option is B.
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Your question seems incomplete, the missing image is attached below:
Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that
apply.
Both involve the melting of solid materials in the nebula.
Both involve the formation of solid particles from nebular materials.
Both involve the work of the gravitational push on nebular materials.
Both involve the trapping of gases and the clumping of masses of matter.
Both involve the growing of gas grains with the addition of atoms and molecules.
The statements which describe the processes involved in the accretion of planetesimals and protoplanets are:
II. Both involve the formation of solid particles from nebular materials.
IV. Both involve the trapping of gases and the clumping of masses of matter.
Accretion can be defined as the accumulation of coastal sediment, sand or land mass on a tectonic plate at a subduction zone over time.
Planetesimals refers to the small celestial bodies of a combination of dust, rock and gas which combines to form the planets, after the solar system begin to form.
Protoplanets can be defined as a large collection of matter within a giant cloud of gas and dust in orbit around the sun and developing into a planet. Thus, a protoplanet is a large planetary embryo in its early stages of evolution through accretion.
Basically, the processes involved in the accretion of planetesimals and protoplanets are;
The formation of solid particles from nebular materials.The trapping of dusts, gases and the clumping of masses of matter such as rocks.Read more: https://brainly.com/question/10337469
A stapler is used to staple 100 papers; it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times.
1 OR 2 type of stapler 1. independent variable
1 OR 2 number of jams 2. dependent variable
Answer:
This question is asking to identify the independent and dependent variables in the experiment.
Independent variable: Type/brand of stapler
Dependent variable: Number of jams
Explanation:
The independent variable in an experiment is the variable that is subject to control or manipulation by the experimenter. It is manipulated in order to effect a change in the dependent variable, which is dependent on it. In this experiment, the INDEPENDENT variable is the BRAND/TYPE OF STAPLER USED because it is what is changed or manipulated to produce an outcome.
On the other hand, a dependent variable is that which the experimenter measures. It is the variable that responds to the changes made to the independent variable. In this experiment, the NUMBER OF JAMS is the variable responding to the type of stapler used (independent), hence, it is the DEPENDENT variable.
PLEASE HELP (will give brainliest):
A sample of food is dehydrated, which kills all of the bacteria. However, in a few days, bacteria-free water is added to the food in a bacteria-free environment. Nevertheless, microscopic investigations indicate that bacteria are in the food. How did the bacteria get there?
Answer:
Because the cells in the dehydrated fruit become re-hydrated with the water which then gives the cells in both the water and the fruit the tools that it needs to "come alive" if you will. And the cells become active in the fruit and use the water to grow bacteria.
Explanation:
how many fox cubs do they get 1.5-10 2.1-3 3.8-15
Answer:
5-10
Explanation:
Answer:
5-10
Explanation:
why there is uncertainty in science.
Answer: absolute certainty is often difficult to achieve. Scientific uncertainty generally means that there is a range of possible values within which the true value of the measurement lies.
Please brainliest
The scorpion and moth are active at night. Scorpions feed on moths and other insects that are also active at night. a Predation b Commensalism c Parasitism d Competition
Answer:
A. Predation
Explanation:
Predation involves an organism or animal feeding on other animals as a source of food without the addition of other animals who also eats the same source of food as it.
The scorpion and moth are active at night. Scorpions feed on moths and other insects that are also active at night. This only talks about the Scorpion and the various food sources it has which include moth and other night insects
What is Earths biosphere described as?
Answer:
Since scientists have not found organisms beyond planet Earth, the biosphere is defined as the parts of Earth where life exists. The biosphere is made of three parts, called the lithosphere, atmosphere and hydrosphere.
Explanation:
i hope this helped
PLEASE HELP URGENT ILL GIVE YOU BRAINLIEST Please describe how latitude and solar energy create different climate zones on Earth.
Answer:
Different latitudes on Earth receive different amounts of sunlight the amount of sunlight that a particular latitude receives changes with the seasons.
In the carbon cycle, all animals must consume
other organisms because
A. they can not absorb enough carbon from water.
B. they cannot absorb carbon directly from the air.
C. they are in competition with plants for available
carbon.
D. they require carbon to perform photosynthesis.
Answer:
B is the anwser, I think.
Explanation:
1. animals cannot perform photosynthesis
2. animals cannot go into competion with plants because plants are in a total different kingdom
3. Carbon is not in water, yes there might be a charcol-carbon water filter, yet carbon isn't in water
chemicals that lower the energy need to start a chemical reaction are called
Answer:
catalysts
Explanation:
Answer:
enzymes
Explanation:
lower the level of energy that needs to be invested in a chemical reaction. A chemical reaction's activation energy is the “threshold” level of energy needed to break the bonds in the reactants.
Many lipids are formed by the attachment of three: a. Fatty acids to glycerol c. Cholesterol b. Hydroxyl groups to glycerol d. Fatty acids to a carboxyl group
Answer: a: Fatty acids to glycerol sorry dont have much to say but that is the answer
Explanation: :)
Many lipids are formed by the attachment of three fatty acids to glycerol.
LIPIDS:
Lipids are one of the four biomolecules in nature. Lipids can be of different types namely: triglycerides, sterols, phospholipids fats etc. Triglycerides, as a class of lipid, is structurally made up of three fatty acids and a glycerol molecule. These molecules are joined together in a condensation reaction. Therefore, it can be said that most of lipids are formed by the attachment of three fatty acids to glycerol.Learn more at: https://brainly.com/question/17365806?referrer=searchResults
When is observation a better tool for proving a hypothesis than experimentation
Answer: when it envolves the world
Explanation: if it has anything to do with the world observations are better than experimenting and much safer.
Can traits of organisms be improved? Why? Explain.
Answer:
A single organism can not see an immediate improvement in their traits. Traits of a population can, however, be improved by means of microevolution. By this, I mean natural selection. Organisms with traits that are better suited towards an environment have a greater probability of surviving, meaning that there will be a larger output of offspring with these same traits. This causes gradual change and evolution over time, as more and more offspring receive traits that allow them to survive in their environment.
I hope this is able to help you. If you have any other questions, feel free to leave a comment. I am happy to help ^_^
The most common mineral forming process?
Answer:
C. Crystallization of magma
Explanation:
From the given options, the most common mineral forming process is "crystallization of magma".
When there is an eruption and the magma rises to the earth's surface, it forms a lava. Then the lava begins to cool and crystallize to form igneous mineral rocks. During the crystallization process, it forms crystals.
This process is a common mineral forming process.
A scientist usually runs a(n) |
to see the effects
the independent variable has on the dependent variable.
Answer: Experiment.
Explanation:
Suppose that we have two related variables, A (independent) and B (dependent)
We could design an experiment where we can manipulate the value of A at will, and we also can observe how the variable B changes.
This is called an experiment, where the objective is to see how the variable B is related to the variable A, and then try to make a model that explains this relationship.