What are two properties of most nonmetals?(1) high ionization energy and poor electrical conductivity(2) high ionization energy and good electrical conductivity(3) low ionization energy and poor electrical conductivity(4) low ionization energy and good electrical conductivity

Answers

Answer 1

Answer:

What are two properties of most nonmetals? The two properties of most nonmetals are high ionization energy and poor electrical conductivity. The answer is number 1. The rest of the choices do not answer the question above.

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C. NO
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I think letter b were you put the letters so

mixture or pure substance: 1.blood 2.dyes 3.self-raising flour 4.muesli 5.copper wire 6.distilled water 7.table salt 8.milk 9.bronze 10.tea 11.oxygen 12.air

Answers

Answer: Mixture: Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance: Copper wire, distilled water, table salt, oxygen.

Explanation:

Mixture is a substance which is made up two or more number of compounds which chemically inactive and retain their distinct chemical properties.

Blood , Self raising flour,muesli ,dyes, milk, tea, air, bronze

Pure substance is defined as anything with uniform and unchanging composition is known s pure substance.

Copper wire, distilled water, table salt, oxygen.

What's the deffinition of igneous rock

Answers

Igneousrocks are those rocks that were formed through cooling and solidifying themolten materials. The best example for igneous rock is solid volcanic java.Lava are liquid that comes from a volcano, but once it is dried and solidify,it becomes a rock and called igneous rock.
Another example is the granite and basalt. And according to research igneousrock comes from the latin word ignis which means fire. Thus this says it all.From a liquid becomes a rock.

Answer:

Igneous rock, or magma-tic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust

Explanation:

Absorption of energy into the refrigerant causes a phase change from _____.solid to liquid
liquid to vapor
vapor to liquid
liquid to solid

Answers

liquid to solid i think

the answer is liquid to gas :)

Calculate the density of a sample of liquid with a volume of 130 ml and a mass of 585 g.

Answers

Answer:

4.5 g/ml

Explanation:

Density is the ratio of the mass of the liquid to the volume of the liquid. The unit of mass, volume and density are g, ml and g/ml respectively.

Density is directly proportional to the mass of the substance and is inversely proportional to the volume.

Given,

Mass of the liquid = 585 g

Volume of the liquid = 130 ml

Density = $(mass)/(volume)$ = $(585 g)/(130 ml)$ = 4.5 g/ml

The density of the sample of liquid with a volume of 130 mL and mass 585 g is $\boxed{4.5\;{\text{g/mL}}}$

Further explanation:

The property is a unique feature of the substance that differentiates it from the other substances. It is classified into two types:

1. Intensive properties:

These are the properties that depend on the nature of the substance. These don't depend on the size of the system. Their values remain unaltered even if the system is further divided into a number of subsystems. Temperature, refractive index, concentration, pressure, and density are some of the examples of intensive properties.

2. Extensive properties:

These are the properties that depend on the amount of the substance. These are additive in nature when a single system is divided into many subsystems. Mass, energy, size, weight, and length are some of the examples of extensive properties.

Density is a characteristic property of the substance. It is defined as the mass per unit volume. It is generally represented by $\rho$ .

The formula to calculate the density of the liquid is,

${\mathbf{Density of liquid}}\left({\mathbf{\rho}}\right){\mathbf{=}}\frac{{{\mathbf{Mass of liquid}}\left({\mathbf{M}}\right)}}{{{\mathbf{Volume of liquid}}\left({\mathbf{V}}\right)}}$ …… (1)

The mass of liquid (M) is 585 g. The volume of liquid (V) is 130 mL.

Substitute 585 g for the mass of liquid and 130 mL for the volume of liquid in equation (1).

$\begin{gathered}{\text{Density of liquid}}\left(\rho\right)=\frac{{{\text{585 g}}}}{{{\text{130 mL}}}}\n=\boxed{4.5\;{\text{g/mL}}}\n\end{gathered}$

So the density of the liquid with a volume of 130 mL and mass 585 g is ${\mathbf{4}}{\mathbf{.5}}\;{\mathbf{g}}{\text{/}}{\mathbf{mL}}$ .

Learn more:

1. Calculation of volume of gas: brainly.com/question/3636135

2. Determine how many moles of water produce: brainly.com/question/1405182

Answer details:

Grade: Middle School

Subject: Chemistry

Chapter: Density

Keywords: density, mass, volume, 130 ml, liquid, intensive, extensive, characteristic property, 585 g, substance, amount, nature, same, additive.

Which of the following affects the rate of a chemical reaction?A. the presence of a catalyst
B. the temperature
C. the concentration of reactants
D. all of the above

Answers

The following that affects the rate of a chemical reaction is the presence of catalyst, temperature, and concentration of reactant. The correct option is D.

What is the rate of a reaction?

The rate of reaction is the speed of the reaction at which a reaction takes place.

The catalyst increases the rate of reaction.

The increase in temperature increases the rate of reaction.

Thus, the correct option is D. all of the above.

Learn more about the rate of a reaction

brainly.com/question/8592296

D. A ll of the above. catalyst reduces the activation energy thereby making the reaction faster. an increase in temperature increases the kinetic energy and no of collisions making reaction faster for an endothermic reaction while decrease in temperature favors an exothermic reaction.
increase in concentration increases the molecules reacting so the reaction is faster and vice versa.

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