All categories

3 years ago

I need help with this science!

Chemistry

2 answers:

o-na [289]3 years ago

6 0

Answer:

Scientists classify living things at eight different levels: domain, kingdom, phylum, class, order, family, genus, and species. In order to do this, they look at characteristics, such as their appearance, reproduction, and movement, to name a few.

Explanation:

Eddi Din [679]3 years ago

3 0

Answer:

All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

You might be interested in

An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of _____ amu. (Enter a whole number.)

STatiana [176]

I believe it would be the sum of protons & neutrons which equals 9 amu....

7 0

3 years ago

Read 2 more answers

Please someone help I'm very confused

hoa [83]

Answer:

$3.03 \: or \: 3\frac{1}{33} (in \: fration) \: hours$

Explanation:

33 miles takes 1 hour

1 " " 1/33 "

100 " 100×1/33

3.03 hours

7 0

3 years ago

If 0.200 moles of NO are produced, how many moles of copper (I) nitrate produced?

Nadusha1986 [10]

Al(NO3)3 + 3KOH -------> 3KNO3 + Al(OH)3

50 ml * .2 moles/ liter = .01 Moles of Al(NO3)3

200 ml * .1 moles/liter = .02 Moles of KOH

Since the ratio between the two reactants according to the chemical equation is 1:3, we would need .03 moles of one to fully react with .01 moles of the other. Since we don't, only 1/150 mole of the first reactant will react with the .02 moles of the second reactant. This will produce .02 moles of KNO3 as well as .01 moles of Al(OH)3

.02 moles KNO3 = .02(48 grams + 14 grams + 40 grams) = .02(102 grams) = 2.04 grams

7 0

3 years ago

What are the products of the chemical reaction between solutions of sodium bromide with a solution of silver nitrate?

iren2701 [21]

Answer : The products of the chemical reaction are, $NaNO_3$ and $AgBr$

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

When sodium bromide react with silver nitrate then it react to give sodium nitrate and silver bromide as a product.

The balanced chemical reaction will be:

$NaBr+AgNO_3\rightarrow NaNO_3+AgBr$

The given reaction is a double-displacement reaction in which the cation of two reactants molecule exchange their places to give two different products.

The species present on the left side of the right arrow is the reactant and the species present on the right side of the right arrow is the product.

In the balanced chemical reaction,

$NaBr$ and $AgNO_3$ are reactants.

$NaNO_3$ and $AgBr$ are products.

Hence, the products of the chemical reaction are, $NaNO_3$ and $AgBr$

3 0

3 years ago

What is wrong with the notation 1s22s22p63s23p63d104s24p2 for germanium (atomic number 32)?

Vaselesa [24]

<span>The notation is not written in the correct order as the 4s subshell should appear before the 3d subshell.
</span>The correct order in an electron configuration would be:
1s , 2s , 2p , 3s , 3p , 4s , 3d , 4p , 5s , 4d , 5p , 6s , 4f , 5d , 6p ,..
So, for germanium the electronic configuration should be;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p²

3 0

3 years ago