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Answer: precision

Explanation: precision is how close the different measurements are to each other and accuracy is how close the measurements are to the true value

Answer:

Volume x Density = Mass of a substance

1300 x 0.67 = 871

The mass is 871 (unit)

Answer:

Can you explain your question I don't understand

Answer:

Oxidation takes place at anode

Reduction takes place at cathode

In the equation Zn has changed to Zn2+. This means oxidation number of Zn has increased from 0 to +2. So Zn is oxidised.

In CuSO4 , Cu2+ and SO4 2- ions are present.

Cu2+ has changed to Cu(s) meaning oxidation number of Cu has reduced from +2 to 0. So Copper is reduced.

So Copper rod is the cathode since it has been reduced and Zn rod is the anode because it has been oxidised.

Also electrons always move from anode to cathode so that also shows us Copper is the cathode

Answer:

Highway 22 ,GA 31820

Explanation:

Answer:

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products and ATP is energy that is transformed from the process.

Explanation:

Answer:

b. Some had similar properties

Answer:

q

=

64 kJ this is answer. .

Answer:

Explanation:

Hence,

The above statement is true for, the gas particles moves faster in high temperature.

Answer:

true

Explanation:

Answer:

C. Al

Explanation:

2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2

Answer:

Plants take carbon dioxide out of the atmosphere, but they also have other effects, such as changing the amount of evaporation from the land surface. ... The plants absorb carbon dioxide for photosynthesis through the same pores (called stomata). But when carbon dioxide levels are high, the leaf pores shrink.

Explanation:

Explanation:

The amount of heat for combustion of the sample is equal to the heat that is released in the bomb calorimeter. The equation that may be used in this item is through,

                                      H = mcpdT

where H is heat, m is mass, cp is specific heat, and dT is the difference in temperature.

                                 H = (1000g)(1.50 J/g°C)(41°C - 21°C)

                                      H = 30,000 J = 30 kJ

Thus, the answer is the second choice. 

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Answer:

Explanation: ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.

superscript Coefficient

Me think

Answer:

As an object is heated up, its atoms and molecules move and collide faster. Geothermal energy is the thermal energy in the earth. Wind. ... total kinetic energy of the particles hat make up a substance. please mark brainliest

Explanation:

Answer: As an object is heated up, its atoms and molecules move and collide faster.

Explanation: Geothermal energy is the thermal energy in the earth. Wind. The total kinetic energy of the particles that make up a substance. Thus when the heat is added to the system, the temperature gets increases which in turn will increase the velocity of the molecule and these molecules will collide even faster .

The effects of long-term exposure to mustard gas causes mortality and chronic respiratory disease.

Exposure to mustard gas in the long term can result in mortality from influenza, pneumonia as well as chronic breathing disease. Exposure for long term leads to respiratory complications and septic shock. Extensive breathing in the environment of mustard gas can cause chronic respiratory disease, respiratory infections or death.

Extensive eye exposure to this gas can cause permanent blindness. Exposure to mustard gas may also increase the chances of lung and respiratory cancer so we can conclude that mustard gas is lethal and can cause a number of diseases in a person who is exposed to it.

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Answer:

9 grams of nitrogen gas

Explanation:

Answer: Activation energy is defined as the minimum amount of extra energy required by a reacting molecule to get converted into product. It can also be described as the minimum amount of energy needed to activate or energize molecules or atoms so that they can undergo a chemical reaction or transformation.

Explanation:

Answer:

the organisms themselves,other organisms,interactions between living organisms, and even their waste.

Answer:

Immune system

Explanation:

Rheumatoid arthritis is an autoimmune disease. Normally, your immune system helps protect your body from infection and disease. In rheumatoid arthritis, your immune system attacks healthy tissue in your joints. It can also cause medical problems with your heart, lungs, nerves, eyes and skin.

Answer:

It's because the solubility of gases in water is inversely proportional to the temperature, so it means when the temperature is increased, the solubility decreases, and the gases tend to get out from the soda

Answer:

So what you want to do is to place sulfur on top with the two fluorine's  on the bottom left and right hand side at slight angles. You don't want to make it look interconnected as one whole bond. Draw a single line from each "F" to the "S" to model two fluorine atoms bond to one sulfur atom (Single bond, only one electron is being shared between each).

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

We have 2 containers connected by a valve.

One container has a volume of 3.00 L and contains O₂ at 4.00 atm. The other container has a volume of 2.00 L and contains Ne at 2.00 atm.

When the valve is opened, the total volume is the sum of the 2 containers.

[tex]V_2 = 3.00 L + 2.00 L = 5.00 L[/tex]

Assuming constant temperature and ideal behavior, we can calculate the final pressure of each gas using Boyle's law.

O₂

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{4.00atm \times 3.00L}{5.00L} = 2.40atm[/tex]

Ne

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{2.00atm \times 2.00L}{5.00L} = 0.800atm[/tex]

The final pressure in the container will be the sum of the final pressures of the gases.

[tex]P = 2.40 atm + 0.800 atm = 3.20 atm[/tex]

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

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Explanation:

Main compounds of milk are lactose and casein. And it is also called a colloidal mixture (i.e. in which one substance of microscopically dispersed insoluble or soluble particles is suspended throughout another substance). Therefore milk is regarded as a mixture not as a pure substance. So this is the required answer.

Answer:

c.dull appearance

Explanation:

Nonmetals are dull,poor conductors of heat and electricity that have lower melting points than metals,the rest of the answer choice are properties of metal.

Hope this helps :)

1. H2O

A water molecule consists of two atoms of hydrogen linked by covalent bonds to the same atom of oxygen. Atoms of oxygen are electronegative and attract the shared electrons in their covalent bonds

How to differentiate between ionic and covalent bonds ?

There is a couple different ways to determine if a bond is ionic or covalent. By definition, an ionic bond is between a metal and a nonmetal, and a covalent bond is between 2 nonmetals. So you usually just look at the periodic table and determine whether your compound is made of a metal/nonmetal or is just 2 nonmetals.

Explanation:

When dilute HCl is added to a small amount of copper oxide in a beaker, a greenish-yellow gas is released and a bluish-green solution is formed. Since the metal oxides such as a Copper oxide (CuO) are basic in nature, it reacts with acids such as HCl to form the corresponding salt and water.