All categories

3 years ago

100 points! Report on an element

Chemistry

2 answers:

AnnyKZ [126]3 years ago

7 0

Gold.

Atomic mass 196.96...

Metal

Anglo Saxon

Group number 11

Golf is used for money or jewelry

It is natural found in caves

Gold is valuable and beautiful

Hope this helps!

Luden [163]3 years ago

6 0

Hydrogen H weight: 81

Non-metal

Hydrogen is the simplest element; an atom consists of only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't occur naturally as a gas on the Earth--it is always combined with other elements.

period 1 group 1

Hydrogen is easily the most abundant element in the universe. It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water.

You might be interested in

AgI + KNO3<br>What type of reaction is this?

emmasim [6.3K]

Answer:

double replacement

Explanation:

4 0

3 years ago

Why is it not advisable to wash the thermometer with hot water?

daser333 [38]

It is advisable not to wash the thermometer and hot water because it made cause the thermometer to break and mercury to leak out from it... it can also damage the accuracy of the thermometer

4 0

3 years ago

8. Calculate the number of moles of eachsubstance.a. 5.45 x 1026 particles of methane, CH4

Klio2033 [76]

<em>ANSWER</em>

The number of moles of methane is 905.32 moles

STEP-BY-STEP EXPLANATION:

Given information

The number of particles of methane = 5.45 x 10^26 particles

Let x represents the number of moles of methane

To calculate the number of moles, we will be using the below formula

$\text{Number of particles = number of moles x Avogadro's constant}$

Recall that, the Avogadro's constant is given as

$6.02\cdot10^{23}$ $\begin{gathered} 5.45\cdot10^{26}\text{ = x }\cdot\text{ 6.02 }\cdot10^{23} \\ \text{Divide both sides by 6.02 }\cdot10^{23} \\ x\text{ = }\frac{5.45\cdot10^{26}}{6.02\cdot10^{23}} \\ x\text{ = }\frac{5.45}{6.02}\cdot10^{26\text{ - 23}} \\ x\text{ = 0.9053 }\cdot10^3 \\ x\text{ = 905.32 moles} \end{gathered}$

Therefore, the number of moles of methane is 905.32 moles

6 0

1 year ago

What is a rule for determining the atomic mass of an atom or ion ?

In-s [12.5K]

Answer:

Mass = Number of neutrons + Atomic number (aka number of protons)

Explanation:

4 0

3 years ago

Each astronaut produces 8.8 x 102 g CO2 per day that must be removed from the air on the shuttle. If a

iris [78.8K]

Answer: 4 people

Explanation:

6 0

3 years ago