Which part of the atom can be transferred from one atom to another to formions?
a. Protons
b. Neutrons
c. Valence Electron
d. Nucleus

Answers

Answer 1

Answer:

Answer:

Explanation: Valance Electron

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Write formula for these compounds: a. Sodium iodide b. Tin (II) chloride c. Potassium Sulfide d. Calcium iodide
Imagine that you have a metal bar sitting half in the sun and half in the dark. On a sunny day, the part of the metal that has been sitting in the sun feels hot. If you touch the part of the metal bar that has been sitting in the dark, will it feel hot or cold? Justify your answer in terms of thermal conductivity.
The glow emitted by a substance exposed to eternal radiation is called
PLEASE HELP CHEM BABES I HAVE BEEN CRYING FOR A WHILE NOW 1. Calculate the mass of nitrogen dioxide (NO2) present in a 0.831 L container if the pressure is 100 kPa at a temperature of 27 oC. R = 8.31 kPa x L / mol x K. (K = oC + 273). 2. A 33.2 L tank contains 280 g of compressed helium. If the pressure inside the tank is 700.0 kPa, what is the temperature of the compressed gas? You must convert the mass of helium into moles using the molar mass of He. The conversion factor will be 1 mol / molar mass of helium. R = 8.31 kPa x L / mol x K

Determine the pressure exerted by 0.352 mol of oxygen gas in a 1.75 L container at room temperature (25 degrees Celsius). Show all your work!

Answers

Answer:

P = 4.92 atm

Explanation:

Given data:

Number of mole of oxygen = 0.352 mol

Volume of gas = 1.75 L

Temperature = 25°C

Pressure exerted by gas = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K

T = temperature in kelvin

Now we will convert the temperature.

25+273 = 298 K

P × 1.75 L = 0.352 mol × 0.0821 atm.L/ mol.K ×298 K

P = 8.61 atm.L / 1.75 L

P = 4.92 atm

Which elements in the periodic table are metalloids or have semimetallic properties

Answers

Hi There! :)

Which elements in the periodic table are metalloids or have semimetallic properties?

Boron, Silicon, Germanium, Arsenic, Antimony, and Polonium are all metalloids. Some people consider Astatine a metalloid

A rabbit is observed to have brown fur. This observed trait is referred to as the

Answers

The observed trait of the individual rabbitis referred to as the phenotype.

Organisms receive a set of genes from their parents. This set of genes that an organism receives from its parents is called the genotype of the organism.

However, genes occur in pairs called alleles. In a pair of alleles, one gene is dominant while other is recessive. The dominant gene determines the expressed traits of the individual organism.

This expressed trait of the individual organism as determined by the dominant gene is called the phenotype of the organism.

Learn more: brainly.com/question/2887149

Answer:

Phenotype

Explanation:

Phenotypes are traits that can be seen or observed by the human eye.

If you want to make 0.5 L of a 0.01 M solution of bromine (Br2) in water, how much bromine would you need? A. 0.8 grams. . B. 0.8 moles. . C. 1.6 grams. . D. 1.6 moles.

Answers

The answer is A. 0.8 grams.

The atomic mass of bromine is: A(Br) = 80
The molecule Br₂ consists of 2 Br atoms. Thus, the molecular mass of bromine is: Mr(Br₂) = 2*A(Br) = 2*80 = 160
This means there are 160 grams/l of Br₂ in 1 M.

Let's write a proportion. If 160 grams/l of Br₂ are present in 1 M, how much of Br₂ will be in 0.01 M:
160 g/l : 1 M = x : 0.01 M
After crossing the products:
x = 80 * 0.01 = 1.6 g/l

Let's write another proportion. If there are 1.6 g of Br₂ in 1 liter, how many of Br₂ will be present in 0.5 liter:
1.6 g : 1 l = x : 0.5
After crossing the products:
x = 1.6 * 0.5 = 0.8 g

A(n) ____________ is a substance in which all the exact combinations of elements are always the same.a.synthetic element
b.compound
c.mixtures
d.solution

Answers

A compound is a substance in which all the exact combinations of elements are always the same. The correct option is b.

What is a compound?

Compounds are substances that are made up of two or more substances or elements. A compound is a mixture of two elements, they share bonds with each other, and they form a totally different substance than the above elements.

For example, NaCl is a compound. It is formed by two elements, sodium, and chloride. These elements form a different compound that is common table salt.

Some compounds are pure substances because they are made up of only elements that mix together. They do not contain any impurity or any other substance. They share chemical bonds with each other.

Thus, the correct option is b. compound.

To learn more about compounds, refer to the link:

brainly.com/question/14658388

#SPJ2

b. compound
source is Glencoe Science book grade 7.
Also I just happening to be learning about this at school

How many protons does the element cobalt (Co) have? 27 32 58.93 59