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kirza4 [7]
3 years ago
7

Ten elements that produce a blue flame

Chemistry
1 answer:
serious [3.7K]3 years ago
6 0
Zinc, selenium, antimony, arsenic, lead, and indium.
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How would I solve this kind of equation ?3.346 x 10^6km to m
mash [69]

Answer:

Explanation:

This question is asking to convert a measurement in kilometers to meters

5 0
3 years ago
5) How many Kilograms are in 12 L of Chlorine Gas?
melamori03 [73]

Answer: 0.03798 kilograms

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given volume}}{\text {Molar Volume}}=\frac{12L}{22.4L}=0.535moles

1 mole of chlorine gas (Cl_2) weighs = 71 g

Thus 0.535 moles of chlorine gas (Cl_2) will weigh = \frac{71}{1}\times 0.535=37.98g=0.03798kg            (1kg=1000g)

Thus there are 0.03798 kilograms in 12 L of chlorine gas.

3 0
3 years ago
What is the radioactivity of the sample of sodium -24 after 30h?
statuscvo [17]
Half life is 15 hours
so 30 hours would be 2 half lives

after 15 hours it would be at 50%
after 15 more hours it would be at 50% of 50%

so .5 x .5 = .25

it would be 25%
5 0
3 years ago
Read 2 more answers
Which of the following
Leokris [45]

A. Acids and bases don't react with each other.  --> False.  Acids and bases react in reactions called neutralization reactions, whose products are salt and water.

B. Acids mixed with bases neutralize each other.  --> True.  See above.

C. Acids mixed with bases make stronger bases.  --> False.  Acids and bases react to neutralize each other, so they would weaken each other, not result in a stronger base or a stronger acid.

D. Acids mixed with bases make stronger acids.  --> False.  See above.

<h3>Answer:</h3>

B. Acids mixed with bases neutralize each other

7 0
3 years ago
What is the rule when "ao" or "oo" are together when naming covalent bonds
Gnoma [55]

They are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

<h3>What is a covalent bond?</h3>

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.

Sometimes, while naming the chemical compounds, a problem arises when compounds with “ao” and “oo” are written with -ide name. Conventionally, they are converted into a single “o”.

For example, the “ao” in the dichlorine hept-ao-xide (Cl_2O_7). This “ao” in the Cl_2O_7 can be converted into “o”. As the result, the correct name of this compound would be dichlorine hept-o-xide.

Hence, they are converted into a single “o” when "ao" or "oo" are together when naming covalent bonds.

Learn more about the covalent bond here:

brainly.com/question/12661797

#SPJ1

8 0
2 years ago
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