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sesenic [268]
3 years ago
14

What is the first step of the scientific method?

Chemistry
2 answers:
nata0808 [166]3 years ago
8 0
B.Form a hypothesis
4vir4ik [10]3 years ago
6 0

hydrocloric acid

amino acid

citrus acid

boil 250  10 minutes

crush till fine add vinegar and bleach

crush till paste

boild 250 10 minutes

crush till fine

snort

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I’ve been up all night doin chemistry, can someone please give me the answers
m_a_m_a [10]
Here are your answers:

1. MgBr2 + Cl2 = MgCl2 + Br2

Balancing,
Already balanced.

Type of reaction: single displacement


2. Al + Fe2O3 = Al2O3 + Fe

Balancing,
2Al + Fe2O3 = Al2O3 + 2Fe

Type: single displacement reaction


3. AgNO3 + ZnCl2 = AgCl + N2O6Zn

Balancing,
2AgNO3 + ZnCl2 = 2AgCl + N2O6Zn

Type: double displacement reaction

MnO2
4. H2O2 ====== O2 + H20 [being catalyzed by manganese dioxide]

Balancing,
MnO2
2H2O2 ====== O2 + 2H2O

Type: decomposition reaction


5. Zn + HCl = ZnCl2 + H2

Balancing,
Zn + 2HCl = ZnCl2 + H2

Type: single displacement reaction


6. H2SO4 + NaOH = Na2SO4 + H2O

Balancing,
H2SO4 + 2NaOH = Na2SO4 + 2H2O

Type: Acid-base reaction




That took hella long!!! Hope it helps.
4 0
3 years ago
What is the difference between an introduced species and an invasive species?
a_sh-v [17]

Answer and Explanation:

The introduced species is, literally, a species that was introduced into an environment by human action. In other words, an introduced species is one that is not native to a region, does not occur naturally, but has been taken by humans to that region.

An invasive species, on the other hand, is one that was introduced naturally in an environment, but multiplied in a harmful way, causing a strong imbalance in the region.

8 0
3 years ago
Which pair of elements has atoms with the same number of valence electrons ?
RoseWind [281]

Answer:silicon (Si) and geranium (Ge)

Explanation:

3 0
3 years ago
What statement correctly describes the key features of the graph of f(x) = 4(1/2)^(x + 1 )− 3
Snezhnost [94]
<span>Y-intercept of (0, −1), starts up on the left, gets closer to y = −3 on the right.

You have to plot the graph to see it. Google online graphing calculator and enter the equation.</span>
6 0
3 years ago
Read 2 more answers
Of the following choices, pick all that are uses for radiation. Check all that
Novosadov [1.4K]
A B C these are the answers hopes this help <3
8 0
3 years ago
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