A block of metal has a mass of 85g and a volume of 6.35mL. What is the density?

Answer:Soluble

Explanation:Soluble:(of a substance) able to be dissolved, especially in water.

Answer:

this is the answer for will NaOH be a buffer

Explanation:

The compound CH 3NH 3Cl is a salt made from that weak base, so the combination of these two solutes would make a buffer solution. NH 3 is a weak base, but NaOH is a strong base. The combination of these two solutes would not make a buffer solution

Answer:

25°C + 273.15 = 298.15K , so D.) is the Answer

Explanation:

Answer:

True

Explanation:

A chemical reaction will always result in a new product or substance being formed

that is what makes it a chemical reaction.

Answer:

sulfur

Explanation:

Answer:it do not states

Explanation:

I'll be honest I'm guessing,

but maybe D

Answer:

2.920

Explanation:

This question tests your knowledge of approximation. If we look at the place values after the decimal point, we have, .915. This corresponds to hundredth, tenth and unit.

Since we have 9.15, in rounding it to the nearest tenth, we have to round it up to .920.

Hence, the weight of the flour to the nearest tenth is 2.920.

Answer:

iodine

Explanation:

In the presence of starch, iodine turns a blue/black colour. It is possible to distinguish starch from glucose (and other carbohydrates) using this iodine solution test. For example, if iodine is added to a peeled potato then it will turn black. Benedict's reagent can be used to test for glucose.

Answer:

  50.  54,915 J

  51.  27.0 g

Explanation:

The dimensional analysis tells you how to compute these. Multiplying specific heat, J/(g·°C), by the product of mass and temperature change will give you energy.

__

50.  (375 g)((70 -45) °C)(4.184 J/(g·°C)) = 54,915 J

__

51. M((50 -25)°C)(4.184 J/(g·°C)) = 2825 J

  M = 2825/104.6 g ≈ 27.0 g

Answer:

ACB

Explanation:

Thermal energy is the average sum of all kinetic energy of all the molecules of gases. The correct order of mug in decreasing thermal energy is C>A>B.

Thermal energy is a energy which is possess by a moving object. It is directly proportional to kinetic energy of the molecules. It is very difficult to find the correct value of kinetic energy so we find average kinetic energy. Which is very easy to calculate as compared to calculating kinetic energy. Average kinetic energy is directly proportional to temperature. It is not dependent on the type of gases or mass of gases.

Mathematically,

K.E=2/3KT

Where,

K= Boltzmann constant

T is the temperature

Between A and C whose volume is same, 120°F is the highest temperature so, C will have high thermal energy than A. C will have lowest thermal energy as it has volume larger than that of A and C.

Therefore, the correct order of mug in decreasing thermal energy is C>A>B.

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Answer:

C. 64

Explanation:

Given:

The number of equally likely sample outcomes of a single stage = 4

Unknown:

Total number of elements if there are three stages= ?

Solution;

Probability is the likelihood of an event to occur.

  In this problem;

      For a single stage, the likely outcome is 4

So therefore;

   For the 3 stages 4 x 4 x 4 = 64

Therefore, the total number of elements in the sample space of an experiment with 3 stages is 64

the state of y at room temperature is gas, good luck!

Answer:

nitrogen 18

nitrogen has an atomic number of 7

Answer: The correct answer is B.

Explanation: The scientists and all test subjects involved in the investigation work for the company that sells the medication and  science product or similar is only considered as reliable if it has been tested following the scientific method and if there are not interests that can affect the process.

Answer:

So 1st it is B then D then E then a then C

The order of density of substances ranging from most dense to least dense is :substance B>substance A>substance E>substance C>substance D.

It is a ratio of substance's mass per unit of volume.Symbol most commonly used for density is р.The SI unit of density is kilogram per cubic meter .It explains how tightly a material is packed together.

There are 2 types of density :1)absolute density 2) relative density.Absolute density is the mass of any  substance per unit volume and relative density is the ratio of density of a substance to the density of a given reference material.

Reference material used for relative density is water.The instrument used for measuring density or relative density of liquids is hydrometer. Density is measured at constant temperature and pressure.

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Answer:

Empirical formula is Cr₂O₃.

Explanation:

Given data:

Percentage of Cr = 68.4%

Percentage of O = 31.6%

Empirical formula = ?

Solution:

Number of gram atoms of Cr = 68.4 / 52 = 1.3 2

Number of gram atoms of O = 31.6 / 16 = 1.98

Atomic ratio:

                            Cr               :         O

                           1.32/1.32     :       1.98/1.32

                               1              :        1.5

Cr : O = 1 :  1.5

Cr : O = 2(1 : 1.5)

Empirical formula is Cr₂O₃.

Explanation:

its light waves cannot travel through vaccum

hope it helps

Answer:

Transverse waves do not require a medium to travel.

Explanation:

Answer:

Holmium

Explanation:

Electronic configuration:

             [Xe] 6s² 4f⁵ 5d⁶

To know this element, we must first find the atomic number and then look for its position on the periodic table.

     Number of electrons in [Xe] = 54;

  So the total number of electrons  = 54 + 2 + 5 + 6 = 67

This element has an atomic number of 57. On the periodic table, it is Holmium

Answer:

Mass of proton neutron and electron

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.

Explanation:

Hope this helps :)

Answer:

A. how cholesterol works in the body.

Explanation:

If we know the precise structure of a molecule (by X-ray crystallography), we can understand more about how it interacts with cells, proteins, and other molecules. It can also tell us what reactions it might take part in.

Therefore, we can learn more about how it works in the body and what activities it takes part in in the cells of the body.

Answer:

A

Explanation:

nuityyy

Answer:

Speed: The rate at which someone or something is able to move or operate. Motion: The action or process of moving or being moved.

Explanation:

I pretty much explained it in the answer, have a good one!

Pls Sub to my channel: it's at YT, /channel/, then UCHgDIEsCCSJlYN3Kg2LOgow?

Answer:

i believe its friction

Explanation:

friction slows down objects

Answer:

They are organized by atomic number, hence the reason for 1,2,3,4, you get where im goin'?

Explanation:

Answer:

A. Occur in gaseous and liquid state

Explanation:

The choice that is not a characteristic of minerals is that minerals occur in gaseous and liquid state.

All minerals are solid inorganic compounds.

Answer:

biology

Explanation:

biology is the study of living g things

Answer:

The answer you would be looking for is Biology

Answer:

where are the options?

Explanation:

0.04350179862

Explanation:

Make sure to check for sig figs though. Basically, you have 2.54 mL and you multiply that by the 0.789 g/mL and mL cancels out and you are left with 2.00406g. There are 46.06844 grams per mol of ethanol, so to cancel out grams we multiply by 1/46.06844. And then we are left with 0.04350179862 mol