WARNING this is Not chemistry it is science



Please answer at least one of these questions:

Answer:

Air pressure is the weight of air particles pressing down on the surface of the earth. Air pressure may be high or low. A high pressure system is associated with cooler temperatures and clear skies. A low pressure system is associated with warmer weather, storms or precipitation.

Barometer Measures: Air Pressure

Rain Gauge Measures: Precipitation

Answer:

Dry weather and sunshine :D

[tex] \huge \qquad \underline{ \boxed{ \sf Answer}}[/tex]

Here's the Explanation ~

Loudness depends on Amplitude,

Pitch depends on frequency,

Therefore, the correct choice is :

A. low frequency and high amplitude

Fun fact ( added by me )

Generally guys have low pitched voice, so it's actually easy to understand what they say even if they speak fast, but in case of girls there's a shrill type of voice with High pitch ( frequency ) such that sometimes it's hard to understand what they are saying if they are fast, also it's kind of irritating. [ don't get serious about it lol ]

The amount of the solute present in the given solution is called the concentration. The best way to represent the concentration of the solution is [tex]\rm [K_{2}CrO_{4}].[/tex]

Molar concentration is the molarity of the solution that is the measure of the concentration of the solute dissolved in the solution.

The formula for calculating molar concentration is given as,

[tex]\rm Molarity = \dfrac{\text{moles of solute}}{\text{Solution in L}}[/tex]

The concentration of any substance is represented in the square bracket like [tex]\rm [X][/tex] or  [tex]\rm [K_{2}CrO_{4}].[/tex]

Therefore, option B. [tex]\rm [K_{2}CrO_{4}][/tex] is the representation of the concentration.

Learn more about the molarity here:

https://brainly.com/question/1532164

Answer: [K2CrO4]

Explanation:

Answer:

C. A much larger amount of silk might be needed to produce the same effect

Explanation:

As you may know it will take a lot of silk to make bullet proof fabric out of it.

Answer:

I Guess C

Explanation:

The availability of spider silk is not enough for what is needed, so i believe C is the right answer. But that means that B is also a bit correct .

Answer:

The concept of lewis acids and bases can explain the acidic nature of CO2. A lewis acid is a compound which can accept an electron pair whereas a lewis base is a compound which can donate an electron pair. CO2 acts as a lewis acid.

The density has been given as the mass of the substance per volume of the solution. The mass of citric acid in the bottle has been 1.22 grams.

Percent mass can be given as the mass of substance in the total mass of the solution.

The volume of the face serum has been 250 mL, and the density is 0.979 g/mL.

The mass of face serum in the bottle has been:

[tex]\rm Density=\dfrac{Mass}{Volume}\\ 0.979\;g/mL=\dfrac{Mass}{250\;mL}\\ Mass=244.75\;g[/tex]

The total mass of face serum has been 244.75 grams.

The percent mass of citric acid in face serum is 0.5%. This states the presence of 0.5-gram citric acids in 100 grams sample.

The mass of citric acid in the face serum sample is given as:

[tex]\rm 100\;gram\;sample=0.5\;g\;H_3C_6H_5O_7\\\\244.75\;grams\;sample=\dfrac{0.5}{100}\;\times\;244.75\;grams\; H_3C_6H_5O_7\\\\244.75\;grams\;sample=1.22\;grams\;H_3C_6H_5O_7[/tex]

The mass of citric acid present in 250 mL serum sample has been 1.22 grams.

Learn more about percent mass, here:

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6CO2 + 6H2O → C6H12O6 + 6O2

glucose produced = 1/6 x 23.6 = 3.93 moles

Answer:59/150

Explanation:

Explanation:

Concentration means that you concentrate really gard on something abd can't see others around you.

The numerical value of equilibrium constant depends on

As the Temperature increases the value of equilibrium constant decreases and when the Temperature decreases the equilibrium of constant increases. That means they are inversely proportional..

The numerical value of the equilibrium constant depends on the temperature (Option 1).

The equilibrium constant refers to the exact value in a chemical reaction when products and reactants are found in a state of equilibrium.

In conclusion, the numerical value of the equilibrium constant depends on the temperature (Option 1).

Learn more about the equilibrium constant here:

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Answer:

The answer to your question is ∆Hrxm= – 23.9 kJ

I would believe the answer is sound energy because the sound that orchestral gives off, gives off some energy even though it isn't necessarily comparable to other sources of energy.

Hope that helped!

Answer:

yes yes yes yes yes yes yes yes yes yes

Answer:

GAS strand

Explanation:

Used to standarized strand to make solution to fasten the calculation

The properties of substances can be used to put the into groups.

In chemistry, it is often necessary to put substances into groups based  on similarity in their properties. This is what led to the idea of a periodic table of elements.

Similarly, when we have unknown substances, we can group them according to the similarities in their properties.

Learn more about properties of substances: https://brainly.com/question/19886211

Answer:

2, I believe.

Explanation:

In the cO2 molecule, each oxygen atom has two lone pairs of electrons. The carbon atom has no lone pairs.

Explanation:

In the cO2

molecule, each oxygen atom has two lone pairs of electrons. The carbon atom has no lone pairs. The carbon-oxygen bonds are double bonds.

Answer:

The molar solubility of KNO3 is not affected by the pH of the solution. MnS AlCl3 NaF Na3PO4 KNO3

Explanation:

KNO3 is a salt which is formed on the reaction of Strong Acid (HNO3) & Strong Base ( KOH).

Potassium ions nor Nitrate ions can neither loose or gain protons & Hydrogen ions . So there will no effect in pH of the Solution .

Answer:

An input of heat energy Yr don't you know stupied

N = n x No

n = N/No

No = avogadro's number, 6.02 x 10²³

[tex]\tt \dfrac{3.45\times 10^{23}}{6.02\times 10^{23}}=0.573[/tex]

Answer:

3286 grams

Explanation:

For every mol of Ni(CO)4 reactant, a mol of Ni is produced (55.99 mol). Multiply this by the molecular mass of Ni (58.69 g/mol) to give 3286 grams

Answer:

Element  Symbol  Atomic Mass  # of Atoms  Mass PercentNickelNi58.6934134.377%CarbonC12.0107428.139%OxygenO15.9994437.484%

Answer:

1000 km/s is the formula for density of liquid

Answer:

Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)

Explanation:

Answer:

photosynthesis

Explanation:

Bc it is

Answer:

C

Explanation:

Because i got a 100% on it

Answer:

1 mole of CO2 has 6.02 x 10^23 molecules of CO2. Say x moles of CO2 has 3.0x10^23 molecules of CO2. Therefore x = 3/6.02 = 0.50. M = 0.50 * (12 + 2x16) = 0.50 * 44 = 22g.

Dependent variables are those that need a stimulus to present themselves. The independent variables are those that do not need a stimulus to present themselves and the control variables are the elements that remain unchanged throughout the experiment.

To increase the understanding of these variables, we can use as an example an experiment that seeks to evaluate the influence of root growth of transgenic corn with water stress. In this experiment, five plants of transgenic corn will suffer different levels of water stress, while one plant of the same corn will not suffer this stress and will be watered normally.

According to this, root growth is a variable that needs a stimulus to present itself, so this is the dependent variable. Water stress does not need any stimulus, being the independent variable. Finally, the corn plant that will not suffer any type of stress will remain unchanged throughout the experiment, being the control variable.

You didn't show the experiments your question refers to, which prevents me from providing an exact answer, but I hope the information above can help you.

More information about dependent and independent variables at the link:

https://brainly.com/question/967776

Answer:

Dependent variables are those that need a stimulus to present themselves. The independent variables are those that do not need a stimulus to present themselves and the control variables are the elements that remain unchanged throughout the experiment.

Importance of variables

They present the relationship between the elements of the experiment.

Allow hypotheses to be tested.

Allows comparisons between experimental treatments.

They encourage the evaluation of experimental data.

To increase the understanding of these variables, we can use as an example an experiment that seeks to evaluate the influence of root growth of transgenic corn with water stress. In this experiment, five plants of transgenic corn will suffer different levels of water stress, while one plant of the same corn will not suffer this stress and will be watered normally.

According to this, root growth is a variable that needs a stimulus to present itself, so this is the dependent variable. Water stress does not need any stimulus, being the independent variable. Finally, the corn plant that will not suffer any type of stress will remain unchanged throughout the experiment, being the control variable.

You didn't show the experiments your question refers to, which prevents me from providing an exact answer, but I hope the information above can help you.

Explanation:

Answer:

Explanation:

This is answer to your other question:

Mosquito has the smallest number of chromosomes of the organisms shown. So it will be the simplest for studies.  Also because mosquito reproduces within days, you can study effects of any chromosome change on its offspring.

Answer:

in a

A2 is 0.5 also because they are in series

in b

A5 is 0.25 because A4+A5 should give A3

in c

Answer:

0.10417 mol

Explanation:

first step you find the mr of ammonium carbonate { (NH4)2CO3 }

mr of (NH4)2CO3:

=(2×Ar of N) + (8×Ar of H) + (1×Ar of C) + ( 3× Ar of O)

=(2×14) + (8×1) + (1×12) + (3×16)

= 28 + 8 + 12 + 48

=96

no of moles = mass ÷ mr

= 10 ÷ 96

= 0.10417 mol

Answer:

(b) Soft drink

Explanation:

Because soft drinks contain carbonic acid, which reacts with the iron nail. An iron nail kept in a soft drink will lose its shine and appear dull. Because mustard oil, coconut oil, and kerosene have no reaction with iron nails, they do not lose their shine when maintained in these solutions.

Answer:

one amino acid

Explanation: its right